Download Print this page

Kongsberg Simrad ST90 Reference Manual

Fish-finding sonar

Hide thumbs Also See for Simrad ST90:

Reference manual (690 pages)

,

Technical specifications (118 pages)

,

Manual (46 pages)

page of 738

/ 738
Bookmarks

Advertisement

Quick Links

Download this manual

Reference Manual

Simrad ST90

Fish-finding sonar

kongsberg.com/st90

Advertisement

Need help?

Need help?

Do you have a question about the Simrad ST90 and is the answer not in the manual?

Questions and answers

Summary of Contents for Kongsberg Simrad ST90

Page 1 Reference Manual Simrad ST90 Fish-finding sonar kongsberg.com/st90...
Page 3 Additional end-user documents related to the ST90 system can be found on our website. This includes publications that are translated into other languages. Selected publications are also provided in IETM (Interactive Electronic Technical Manual) formats. • https://www.kongsberg.com/st90 442704/E October 2024 © Kongsberg Discovery AS...
Page 4 Kongsberg Discovery disclaims any responsibility for damage or injury caused by improper installation, use or maintenance of the equipment. Disclaimer Kongsberg Discovery AS endeavours to ensure that all information in this document is correct and fairly stated, but does not accept liability for any errors or omissions. Support information If you require maintenance or repair, contact your local dealer.
Page 5 Reference Manual Table of contents ABOUT THIS MANUAL..................15 SIMRAD ST90......................17 Important..........................18 System description....................... 20 System diagram........................21 System units......................... 23 Display – description....................23 Processor Unit – description..................23 Operating panel – description.................. 24 Transceiver Unit – description.................. 25 Hull Unit –...
Page 6 Simrad ST90 Controlling the gain and range settings................49 Adjusting the gain (echo sensitivity)................. 49 Adjusting the TVG (Time Variable Gain) setting............51 Adjusting the sonar range..................52 Expanding the range within the sonar view..............54 Adjusting the intensity of the echo presentations............ 54 Changing the tilt......................55...
Page 7 Reference Manual Locating the echo data files to delete, move or copy them........87 Selecting Replay mode....................88 Choosing which echo data file(s) to replay............... 89 Recording and exporting processed echo data..............91 Defining the processed data recording parameters..........91 Recording processed data..................92 Locating the processed data files to delete, move or copy them......
Page 8 Simrad ST90 Selecting which tooltips to appear in the user interface........118 Adjusting the backlight intensity on the Operating Panel........119 Reducing the light emitted from the display presentation........119 Increasing the visibility of the information panes...........120 Changing the colour palette ("skin") used in the display presentations....121 Choosing the colours used to present the echoes..........
Page 9 Reference Manual Setting up the input from a navigation system (GPS)..........163 Setting up the interface for speed log input............166 Setting up the interface for course gyro input............168 Configuring the sensor priority................171 Setting up the input from an external motion reference unit (MRU)..... 173 Setting up the input from an internal motion reference unit (MRU)......
Page 10 Simrad ST90 Preventive maintenance....................243 Preventive maintenance schedule................244 Requirements for personnel and tools..............246 Approved anti-fouling paints.................. 247 Preventive maintenance procedures..............248 Accessing the inside of the installation trunk............267 USER INTERFACE....................273 User interface familiarization..................... 274 Top bar..........................277 Top bar overview.....................278...
Page 11 Reference Manual Target markers......................356 Circle Marker......................359 Own Ship Marker....................360 Gear Symbol......................362 Rulers........................364 Using target and position tracking..................365 About target tracking....................365 About position tracking...................368 Information panes......................373 Biomass information pane description..............374 Size Distribution information pane description............377 Fish Position information pane description............
Page 12 Simrad ST90 Operation menu: functions and dialog boxes..............449 Operation function....................451 Transmission Mode function...................452 Tx Power function....................454 Record RAW function....................455 Record Processed function..................457 Output dialog box....................459 Audio function......................460 Display menu: functions and dialog boxes................. 462 Visual Objects function...................
Page 13 Reference Manual Installation dialog box..................... 488 About dialog box..................... 490 Active menu: functions and dialog boxes................491 TVG function......................492 Ping‑Ping Filter function..................494 Pulse Type function....................496 Bandwidth function....................499 Frequency function....................501 Horizontal TX Sector function................. 503 Vertical TX Sector function..................505 Range Projection function..................507 AGC (Automatic Gain Control) function..............
Page 14 Simrad ST90 Power Off dialog box....................543 Transceiver On/Off dialog box.................543 Pages in the Output dialog box..................547 File Setup page......................547 I/O Setup page......................549 Processed Data to File page..................554 Marker Output page....................557 Relay Output page....................559 Screen Recording page....................562 Screen Captures File Location page................
Page 15 Reference Manual Sensor Configuration page..................612 Motion Reference Unit page................... 616 Installation Parameters page.................. 620 Synchronization page....................626 Units page....................... 629 Operating Panel page....................631 Echogram Settings page ..................644 Hull Unit Configuration page...................645 System Protection page..................647 Fishing Gear Setup page..................651 User Settings Setup page ..................
Page 16 Simrad ST90 Self noise......................... 691 Ambient noise......................694 Electrical self noise....................694 Reverberation......................695 Some means to reduce acoustic noise..............696 TECHNICAL SPECIFICATIONS................699 DATAGRAM FORMATS..................700 INDEX........................701 442704/E...
Page 17 About this manual About this manual Target audience This publication is intended for all users of the ST90 system. Due to the nature of the descriptions and the level of detail provided by this publication, it is well suited for those who are - or wish to be - expert users.
Page 18 Simrad logo ® ® ® are either registered trademarks, or trademarks of Kongsberg Discovery AS in Norway and other countries. Windows is a registered trademark of Microsoft Corporation in the ® United States and other countries. We want your feedback We always want to improve our products.
Page 19 Simrad ST90 Simrad ST90 Topics Important, page 18 System description, page 20 System diagram, page 21 System units, page 23 General safety rules, page 30 Network security, page 31 Support information, page 32 442704/E...
Page 20 Simrad ST90 Reference Manual Important The ST90 is an advanced product. It is used with other advanced products. There is important information that you need to know. Before you turn on the ST90 system Before you turn on the ST90 system, make sure that you have sufficient water depth to...
Page 21 Simrad ST90 Note You may damage the software and the interface settings used to communicate with external devices. Manual operation of the hull unit In the event of improper operation, the powerful electric motor on the hull unit may cause serious damage to the equipment and/or injury to personnel.
Page 22 Simrad ST90 Reference Manual System description The Simrad ST90 is a low-frequency fish-finding sonar with 360-degree coverage and long range. The ST90 system is designed for medium and large sized fishing vessels. If high performance is your number 1 criteria when choosing a sonar; such as long range, high resolution, narrow beams and high source levels, this is your natural choice.
Page 23 The ST90 system is equipped with the celebrated signal processing software developed by Kongsberg Discovery. This includes Hyperbolic FM (HFM) transmissions. This pulse type is also known as "chirp". It ensures a clutter free picture with very high resolution in range.
Page 24 Simrad ST90 Reference Manual Display (The second display is optional.) Processor Unit Operating Panel Transceiver Unit Hull Unit Hoisting motor Motor Control Unit Transducer In this publication, the computer can also be referred to as the Processor Unit, and vice versa.
Page 25 Simrad ST90 System units Topics Display – description, page 23 Processor Unit – description, page 23 Operating panel – description, page 24 Transceiver Unit – description, page 25 Hull Unit – description, page 26 Transducer – description, page 27 Display – description A display is a required part of the ST90 system.
Page 26 Simrad ST90 Reference Manual of serial and Ethernet lines for communication with external devices. The Processor Unit is normally mounted on the bridge. HT20470 The HT20470 Processor Unit is available in two versions. The DC version operates on +24 VDC while the AC version operates on 100 to 240 VAC. A suitable power supply may be provided with the ST90 system delivery.
Page 27 Simrad ST90 made interface board. A small commercial power supply is used to provide power to the Operating Panel. (The Mk1 Operating Panel is no longer provided with new sonars. This information is provided for legacy reasons.) • The Mk2 Operating Panel is connected to the Processor Unit using an Ethernet cable.
Page 28 Simrad ST90 Reference Manual Related topics Simrad ST90 on page 17 System units on page 23 Hull Unit – description The hull unit is used to lower the transducer down below the ship’s hull when the ST90 system shall be used. When the ST90 system is turned off, the transducer is hoisted for protection.
Page 29 Simrad ST90 Hull Unit Lowering depth (m) Transducer cable (m) Maximum speed (knots) ST94 The same transducer is used on all hull unit types. If a Hull Unit Controller is supplied with the system, the Motor Control Unit cabinet is used as a junction box.
Page 30 Simrad ST90 Reference Manual Note The transducer is covered with a thick red or black protective coating made of a special plastic type. The protective coating is a vital part of the transducer. It is very important that neither this coating nor the internal parts of the transducer are damaged during the handling, installation or cleaning.
Page 31 Simrad ST90 Lower part of shaft sleeve Lower part of transducer shaft Transducer with the protective coating The transducer is mounted at the bottom end of the hull unit’s transducer shaft. This allows the transducer to be lowered into the water for operational use, and retracted for protection when the ST90 system is turned off.
Page 32 Simrad ST90 Reference Manual General safety rules Safety is important. Observe and follow these safety precautions during all installation and maintenance work. WARNING The ST90 system operates on 115 VAC and/or 230 VAC at 50/60 Hz. This voltage is lethal! You must never work alone on high-voltage equipment! The hull unit is powered by a 3-phase high voltage.
Page 33 If a ST90 system is connected to a local area network, data security is important. Equipment manufactured by Kongsberg Discovery is often connected to a local area network (LAN). When you connect a computer to a local area network you will always expose the data on that computer.
Page 34 We cannot estimate the threat level and your need for network security. For this reason, we cannot accept responsibility for the network security. Kongsberg Discovery will not accept any responsibility for errors or damages caused by unauthorized use of or access to the ST90 system.
Page 35 Telefax • www.kongsberg.com/simrad Website • simrad.france@simrad.com E-mail address • : Kongsberg Underwater Technology LLC (KUTL) / Simrad Fisheries Company name • : 19210 33rd Ave W, Suite A, Lynnwood, WA 98036, USA Address • : +1 425 712 1136 Telephone •...
Page 36 Simrad ST90 Reference Manual • simrad.canada@simrad.com E-mail address Malaysia • : Kongsberg Maritime Malaysia Sdn. Bhd Company name • : Unit 27-5 Signature Offices, The Boulevard, Mid Valley City, Address Lingkaran Syed Putra, 59200 Kuala Lumpur, Malaysia • : +65 6411 7488 Telephone •...
Page 37 Operating procedures Operating procedures Topics Getting started, page 36 Choosing operating mode and key transmit parameters, page 40 Controlling the gain and range settings, page 49 Using the markers and tracking features, page 60 Improving the recognition of fish and schools using receiver filters, page 75 Recording and replaying echo data, page 84 Recording and exporting processed echo data, page 91 Capturing the display presentation in image and video files, page 96...
Page 38 Simrad ST90 Reference Manual Getting started Topics Turning on the ST90 system, page 36 Lowering and hoisting the transducer from the user interface, page 37 Turning off the ST90 system, page 39 Turning on the ST90 system To use the ST90 system, you must first turn it on. To turn on the ST90 system use the button on the Operating Panel.
Page 39 Operating procedures Once the program has started, observe that the display presentation fills the entire screen. The program starts up using the same settings as the last time you used it. If these settings are acceptable, continue operation. If you wish to alter any of the settings, see the relevant procedures.
Page 40 Simrad ST90 Reference Manual About this task dialog box allows you to lower and Hull Unit Control hoist the transducer. The dialog box also provides status information about the transducer position. You can monitor the current position of the transducer and make changes to the position defaults.
Page 41 Operating procedures Hull Unit Control dialog box on page 539 Turning off the ST90 system When you do not use the ST90 system, turn it off. Select on the top bar to turn Power Off off the ST90 system. You can also use the button on the Operating Panel.
Page 42 Simrad ST90 Reference Manual Choosing operating mode and key transmit parameters Topics Selecting Normal mode to start pinging, page 40 Selecting Replay mode, page 41 Selecting Inactive mode, page 43 Setting up the ST90 system for maximum echo refresh rate, page 43...
Page 43 Operating procedures function controls the operating mode of the ST90 system. Normal Operation mode allows the ST90 system to transmit ("ping") through the water, and to receive the echoes. to Maximum. Transmission Mode enables or disables the ST90 system's transmissions into the water. Transmission Mode If you choose Maximum, the ST90 system will transmit (ping) continuously and as often as possible.
Page 44 Simrad ST90 Reference Manual : Select this button to stop the playback. Stop : Select this button to start the playback, or to pause it. Play/Pause : Select this slider and move it sideways to adjust the replay speed. Replay Speed : The button shows you which file you are replaying.
Page 45 Operating procedures Replay File dialog box on page 521 Selecting Inactive mode Inactive mode is provided to pause the operation temporarily. Neither transmission nor reception takes place. The current echoes are removed from the display presentation. About this task function controls the operating mode of the ST90 system. Operation Note Note that Inactive operating mode is not the same as Passive mode.
Page 46 Simrad ST90 Reference Manual About this task to control how often the ST90 system shall transmit its energy into Transmission Mode the water. For normal use, choose Maximum. If you choose Maximum, the ST90 system will transmit (ping) continuously and as often as possible.
Page 47 Operating procedures to Normal. Operation to Single Ping. Transmission Mode Select the ping symbol on the right side of the button to transmit one single ping. Related topics Operating procedures on page 35 Choosing operating mode and key transmit parameters on page 40 Setting up the ST90 system for maximum echo refresh rate on page 43...
Page 48 Simrad ST90 Reference Manual You can also change the value by selecting - and holding - the middle of the button, and move the cursor sideways. Drag the cursor sideways to increase or decrease the value. Release the mouse button when requested value is shown.
Page 49 Operating procedures Procedure Open the menu. Operation Select Tx Power Select the requested output power. Select either side of the button to choose a value. Select the middle of the button to open a small menu with the available options. Related topics Operating procedures on page 35...
Page 50 Simrad ST90 Reference Manual Select to apply your changes and close the dialog box. User Settings On the menu, set to 1000 m. Main Range Open the menu. Set to Off. Operation Tx Power Open the menu. Set to CW Medium.
Page 51 Operating procedures Controlling the gain and range settings Topics Adjusting the gain (echo sensitivity), page 49 Adjusting the TVG (Time Variable Gain) setting, page 51 Adjusting the sonar range, page 52 Expanding the range within the sonar view, page 54 Adjusting the intensity of the echo presentations, page 54 Changing the tilt, page 55 Adjusting the bearing, page 57...
Page 52 Simrad ST90 Reference Manual The echo strength (A) changes with time. The minimum level of detection (B) is adjusted up or down with the function. Increasing the with a more positive number reduces Gain Gain the minimum level, and this increases the sensitivity. Only echoes over the minimum level are shown in the echogram (C).
Page 53 Operating procedures Its default location is on the right side of the display presentation. Select Gain Make the necessary adjustment. The following methods can be used to adjust this setting: Select [+] or [-] to choose the requested setting. Place the cursor on the button. Press and hold the left mouse button. Move the cursor horizontally over the button.
Page 54 Simrad ST90 Reference Manual Open the menu. Active Locate the button. Select [+] or [-] to choose the requested setting. Related topics Operating procedures on page 35 Controlling the gain and range settings on page 49 TVG function on page 492 Adjusting the sonar range Some echoes are close, others are further away.
Page 55 Operating procedures The active view is identified with a thicker border. Unless you use the Apply to all function, all changes you make will only be applied to this view. Use the joystick to make the adjustment. Optionally: Turn the relevant rotary switch to make the adjustment. The Mk2 Operating Panel is fitted with three rotary switches.
Page 56 Simrad ST90 Reference Manual Expanding the range within the sonar view In some situations you may wish to expand the range in the sonar presentations. Use View to expand the range shown in the relevant views to any percentage of the original Range setting.
Page 57 Operating procedures About this task controls the "amount" of echo that is displayed, in other words the "strength" Display Gain or "intensity" of the echo presentation. The function thus increases or decreases the presentation of the echo colours. Use this setting together with to adjust the Gain sensitivity of the ST90 system.
Page 58 Simrad ST90 Reference Manual With 0° tilt the sonar beam is transmitted in parallel with the sea surface. With 60 degrees tilt the beam is directed towards the bottom. The challenge is to find a tilt that prevents the fish echoes to be "buried" in reverberation and bottom echoes.
Page 59 Operating procedures Optionally: Click in any view to make it active. The active view is identified with a thicker border. Unless you use the Apply to all function, all changes you make will only be applied to this view. Observe the menu.
Page 60 Simrad ST90 Reference Manual • The bearing for the Vertical view is controlled by the bearing in the Horizontal view. • If you use a presentation mode with two horizontal views you can set to two Bearing different values. Both bearing lines are shown in the Horizontal view. Both bearings are shown as continuous lines pointing out from the sonar position.
Page 61 Operating procedures Optionally: In a Horizontal view, select the bearing line and drag it sideways. Optionally: Observe the menu. Main Its default location is on the right side of the display presentation. Select Bearing Make the necessary adjustment. The following methods can be used to adjust this setting: Select [+] or [-] to choose the requested setting.
Page 62 Simrad ST90 Reference Manual Using the markers and tracking features Topics Starting a position track, page 60 Starting a target track, page 62 Placing a new marker, page 63 Deleting a marker, page 64 Deleting multiple markers, page 65 Measuring the size of a school relative to the purse seine, page 66...
Page 63 Operating procedures By default, a new manually initiated tracked object is automatically given priority status. Relevant information about the priority target can be found in the lower left corner of the view. If you think the text is small and hard to read, double-click on the text field.
Page 64 Simrad ST90 Reference Manual Starting a target track During normal operation, some echoes are clearly more interesting than others. In many situations specific echoes may be regarded as targets. To set up the ST90 system to provide such information, you can start target tracking.
Page 65 Operating procedures Relevant information about the tracked object can be found in the bottom left corner of the view. If you think the text is small and hard to read, double-click on the text field. This will increase the text size. On the page, de-select if you do not want...
Page 66 Simrad ST90 Reference Manual About this task Each marker is positioned based on the two known axes in the view. Example When you are manoeuvring close to the coastline, or in otherwise working in confined waters, you may wish to avoid shallow waters and reefs. To keep track of potentially dangerous places, you place markers on them.
Page 67 Operating procedures Procedure Open the menu. Objects In the list of objects, check the box for the object you wish to delete. Select Delete Place the cursor on the marker you wish to delete. Right-click to open the shortcut menu. Select Delete Marker On the Operating Panel, press the appropriate button to select...
Page 68 Simrad ST90 Reference Manual In the list of objects, check the box for the object(s) you wish to delete. Check to select all the objects in the list. Select All Select Delete On the Operating Panel, press the appropriate button to select...
Page 69 Operating procedures Procedure Position the cursor where you wish to place the circle marker. Press on the Operating Panel. Circle Marker Right-click and select on the shortcut menu. Place Circle Marker The size and location of the marker is defined by the choices you have made with the function.
Page 70 Simrad ST90 Reference Manual Procedure At the bottom of the display presentation, select a suitable presentation mode, and activate the Catch view. To start the process: Press on the Operating Panel. Gear Right-click and select on the shortcut menu. Show Gear Symbol This places a circle marker in the view.
Page 71 Operating procedures Related topics Operating procedures on page 35 Using the markers and tracking features on page 60 Using markers in the ST90 user interface on page 351 Changing the fishing gear properties to match your own equipment on page 73 Choosing the fishing gear in use on page 72 Objects menu...
Page 72 Simrad ST90 Reference Manual Under certain circumstances the target tracking may not follow the intended echo. This may for example happen if the tracking area is too large. Procedure Open the menu. Setup Use the function to define the size of the area that you want to detect Tracking Area moving objects in.
Page 73 Operating procedures About this task Illustration: Each option controls the distance from Tracking Area the inner to the outer radius of the area. The width of the area is fixed, and stretches across a predefined number of beams. This means that the actual width depends on the distance from your vessel to the area.
Page 74 Simrad ST90 Reference Manual What to do next Use the dialog box to change the size of the predefined area sizes. Tracking Area Setup Related topics Operating procedures on page 35 Using the markers and tracking features on page 60...
Page 75 Operating procedures Using markers in the ST90 user interface on page 351 Changing the fishing gear properties to match your own equipment on page 73 Using visual aids during the purse seine catch phase on page 67 Fishing Gear function on page 477 Fishing Gear Setup page on page 651...
Page 76 Simrad ST90 Reference Manual Select to save the selected settings and close the dialog box. Related topics Operating procedures on page 35 Using the markers and tracking features on page 60 Using markers in the ST90 user interface on page 351...
Page 77 Operating procedures Improving the recognition of fish and schools using receiver filters Topics About the receiver filter sequence in the ST90 system, page 75 Reducing noise and reverberation with the AGC (Automatic Gain Control) function, page 76 Reducing propeller noise and interference with the Noise Filter, page 78 Reducing bottom and surface reverberation with the RCG (Reverberation Controlled Gain) function, page 79 Reducing noise and false echoes with the Ping-Ping Filter, page 81...
Page 78 Simrad ST90 Reference Manual Note that (Time Varied Gain) and are not filters, but included only to Gain Display Gain illustrate the complete "signal path". Related topics Operating procedures on page 35 Improving the recognition of fish and schools using receiver filters...
Page 79 Operating procedures The most practical way to use the AGC (Automatic Gain Control) is to first switch it off. Adjust the echo presentation using the normal gain functionality until you have the best possible result, then activate the AGC. The AGC works best with even background (homogenous noise conditions) and pronounced targets.
Page 80 Simrad ST90 Reference Manual Improving the recognition of fish and schools using receiver filters on page 75 AGC (Automatic Gain Control) function on page 508 Reducing propeller noise and interference with the Noise Filter Unless you synchronize the transmissions from your other hydroacoustic systems you may have an issue with interference.
Page 81 Operating procedures Reducing bottom and surface reverberation with the RCG (Reverberation Controlled Gain) function When you transmit an acoustic pulse into the water to search for a target, echoes will also be returned from any other objects in the beam. The energy reflected from these "unwanted"...
Page 82 Simrad ST90 Reference Manual • : Use for scattered fish. Weak • : Use for schools. Medium • : Use for schools with higher density. This setting can also be used in horizontal Strong views to detect schools close to the bottom.
Page 83 Operating procedures Reducing noise and false echoes with the Ping-Ping Filter analyses the historical information from previous consecutive pings in Ping-Ping Filter order to remove unwanted noise and interference from the echo presentation. About this task The following filter options are provided: •...
Page 84 Simrad ST90 Reference Manual Reducing the strong bottom echo to see fish close to the seabed Fish close to the bottom can be hard to see because they may be hidden in the strong bottom echo. About this task The ST90 system provides a bottom filter to reduce the sometimes powerful echo from the seabed.
Page 85 Operating procedures About this task controls the "amount" of echo that is displayed, in other words the "strength" Display Gain or "intensity" of the echo presentation. The function thus increases or decreases the presentation of the echo colours. Use this setting together with to adjust the Gain sensitivity of the ST90 system.
Page 86 Simrad ST90 Reference Manual Recording and replaying echo data Topics Defining the file and folder settings for data recording, page 84 Recording echo data, page 85 Locating the echo data files to delete, move or copy them, page 87 Selecting Replay mode, page 88...
Page 87 Operating procedures Set up the file and folder parameters before you start the recording. If you wish to save your recorded data on an external hard disk, make sure that it is connected to the computer. Procedure Open the menu. Operation Select Output...
Page 88 Simrad ST90 Reference Manual You are permitted to define the maximum file size for each recorded file. About this task Unless you really need to record data for playback and/or training purposes, you should use this function with care. The data files will fill your hard disk very fast! Note The data files will normally become very large.
Page 89 Operating procedures Locating the echo data files to delete, move or copy them Use the data recording functionality provided by the ST90 system to save echo data. You can save the data to the hard disk, or onto an external storage device. Before you begin It is assumed that you are familiar with the Microsoft operating system utilities for file...
Page 90 Simrad ST90 Reference Manual Selecting Replay mode Replay mode allows you to play back previously recorded raw data. The ST90 system cannot operate normally while in Replay mode. Neither transmission nor reception takes place. About this task All playback is controlled by the replay bar.
Page 91 Operating procedures Choosing operating mode and key transmit parameters on page 40 Selecting Normal mode to start pinging on page 40 Selecting Replay mode on page 41 Selecting Inactive mode on page 43 Recording and replaying echo data on page 84 Choosing which echo data file(s) to replay on page 89 Operation function...
Page 92 Simrad ST90 Reference Manual dialog box allows you to choose which file(s) to be used for playback. Replay File The files listed were generated automatically during recording. Each file is identified with the time and date it was made. Select to choose a replay file.
Page 93 Operating procedures Recording and exporting processed echo data Topics Defining the processed data recording parameters, page 91 Recording processed data, page 92 Locating the processed data files to delete, move or copy them, page 94 Defining the processed data recording parameters The ST90 system allows you to record processed data.
Page 94 Simrad ST90 Reference Manual Observe that the dialog box opens. This dialog box contains a number of pages Output selected from the menu on the left side. Select to open the page. Processed Data to File Select an output type from the list.
Page 95 Operating procedures Screen Captures function Select to make a copy of the entire display presentation. Each screen Screen Capture capture you make is saved in format on the Processor Unit hard disk. .jpg Record RAW function allows you to record the unprocessed echo data received by the Record RAW transducer.
Page 96 Simrad ST90 Reference Manual Alternatively, simply select the red circle on the right side of the button. To stop recording, open the button, and select Off. Record Processed Alternatively, select the black rectangle on the left side of the button to stop the recording.
Page 97 Operating procedures From the Windows button, right-click to open File Explorer. ® Start In the file manager utility, locate the folder you defined on the Processed Data to File page. Use the functionality provided by the operating system to delete the files, or to copy or move them to the storage device.
Page 98 Simrad ST90 Reference Manual Capturing the display presentation in image and video files Topics Capturing the display presentation in an image, page 96 Capturing the display presentation using one image for each ping, page 97 Choosing screen capture mode, page 98...
Page 99 Operating procedures Note Operating Panel (Mk1): Press to make a screen capture. Record Results Each screen capture you make is saved in format on the Processor Unit hard disk. .jpg Alternatively, you can use a USB flash drive or hard drive to save the screen captures. Use to define where to save your screen captures.
Page 100 Simrad ST90 Reference Manual Select on the top bar to start the sequence. Screen Capture You can also use the button on the Operating Panel. Screen Capture Note Operating Panel (Mk1): Press to make a screen capture. Record Select one more time to stop the sequence.
Page 101 Operating procedures Note Operating Panel (Mk1): Press to make a screen capture. Record Procedure Open the menu. Setup Select Screen Captures Select screen capture mode. In Single mode one screen capture is taken every time you select Screen Capture the top bar. In Sequence mode a new screen capture is created for every ping.
Page 102 Simrad ST90 Reference Manual Procedure Open the menu. Operation Select Output Observe that the dialog box opens. This dialog box contains a number of pages Output selected from the menu on the left side. Select Screen Capture File Location Select to locate or create the desired folder.
Page 103 Operating procedures From the Windows button, right-click to open File Explorer. ® Start Navigate to the folder you chose to use for the screen captures. Navigate to the default folder. C:\Users\Public\Documents\Simrad\ST90\ScreenDumps Use the functionality provided by the operating system to delete the files, or to copy or move them to the storage device.
Page 104 Simrad ST90 Reference Manual Procedure Observe on the top bar. Screen Recording Select on the top bar to start the recording. Screen Recording Select on the top bar one more time to stop the recording. Screen Recording Related topics Operating procedures...
Page 105 Operating procedures Observe that the dialog box opens. This dialog box contains a number of pages Output selected from the menu on the left side. Select to open the page. Screen Recording Select to locate the desired folder. Browse This function uses a standard operating system dialog box. Select to save the selected setting and close the dialog box.
Page 106 Simrad ST90 Reference Manual Setting up presentation modes and views Topics Selecting which presentation modes to choose from at the bottom of the display presentation, page 104 Selecting which cursor and marker information to be shown in a view, page 105...
Page 107 Operating procedures All the presentation modes are listed. Each of these appears as a tab on the bottom bar. Select which presentation modes to choose from. Select to save the selected setting and close the dialog box. Related topics Operating procedures on page 35 Setting up presentation modes and views on page 104...
Page 108 Simrad ST90 Reference Manual Tracked target information / Priority marker information Cursor information / Manual track information The tracked target is regarded as an object, and it is identified with a circle and two lines. The two lines reflect the size of the current tracking area.
Page 109 Operating procedures Related topics Operating procedures on page 35 Setting up presentation modes and views on page 104 Cursor Readout page on page 575 Moving a view to another display Each operating mode is presented with a set of views. These are placed at different positions with different sizes.
Page 110 Simrad ST90 Reference Manual Rearranging the layout of the echo presentations Each operating mode is presented with a set of views. These are placed at different positions with different sizes. With the function you can move and re-size Docking Views the views in the display presentation.
Page 111 Operating procedures Moving a view to another display on page 107 Rearranging the layout of the echo presentations on page 108 Restoring the locations and sizes of the views on page 109 Docking Views function on page 473 Restoring the locations and sizes of the views If you have used to rearrange the position and size of your views, you must Docking Views...
Page 112 Simrad ST90 Reference Manual Defining the visual information in the sonar views Topics Selecting true or relative motion behaviour in the views, page 110 Placing data from a sea current sensor in the sonar view, page 111 Adding markers for external objects to the echo presentation, page 112 Creating a visual presentation of your vessel’s previous movements, page 113...
Page 113 Operating procedures Motion function on page 464 Placing data from a sea current sensor in the sonar view A current sensor can be connected to the ST90 system. This can for example be an acoustic Doppler current profiler (ADCP). The information from this sensor is presented in the applicable views.
Page 114 Simrad ST90 Reference Manual Related topics Operating procedures on page 35 Defining the visual information in the sonar views on page 110 Visual Objects function on page 463 Current Flow page on page 574 Adding markers for external objects to the echo presentation Position information from external objects such as buoys, fish aggregating devices and other similar items can be imported into the ST90 system.
Page 115 Operating procedures Creating a visual presentation of your vessel’s previous movements In order to maintain a visual presentation of your vessel’s previous movements, you can draw these with a line. This line is drawn after the vessel symbol in the sonar views, and visualizes your past movements.
Page 116 Simrad ST90 Reference Manual Defining settings related to user preferences and individual customizing Topics Selecting menu language, page 114 Hiding the menu system, page 115 Placing the menu on the left side of the display presentation, page 116 Selecting the information to appear on the top bar, page 116...
Page 117 Operating procedures Select the language you wish to use. Results All the texts in the user interface are changed to the selected language. The context sensitive on-line help may also be available in your language. To change the language in the on-line help, you may need to restart the ST90 system. Related topics Operating procedures on page 35...
Page 118 Simrad ST90 Reference Manual To retrieve the menu, select one more time. Menu Related topics Operating procedures on page 35 Defining settings related to user preferences and individual customizing on page 114 Menu on page 280 Placing the menu on the left side of the display presentation The menu system is by default located on the right side of the display presentation.
Page 119 Operating procedures Note The information shown on the top bar must not be used for vessel navigation. Procedure Open the menu. Display Select Display Options Observe that the dialog box opens. Display Options Select to open the page. General In the list, select the information you want to see on the top bar.
Page 120 Simrad ST90 Reference Manual Observe that the dialog box opens. Display Options Select to open the page. General Select to enable Coordinated Universal Time (UTC). UTC Time Select to save the selected settings and close the dialog box. Related topics...
Page 121 Operating procedures Select to save the selected settings and close the dialog box. Related topics Operating procedures on page 35 Defining settings related to user preferences and individual customizing on page 114 General page on page 566 Adjusting the backlight intensity on the Operating Panel The buttons on the Operating Panel have a built-in backlight to improve visibility on a dark bridge.
Page 122 Simrad ST90 Reference Manual About this task The intensity of the light given off by the display presentation can be adjusted. You can use this function to increase or decrease the light from the screen to match the ambient light.
Page 123 Operating procedures Select a setting that fits your requirements. Transparency The chosen transparency percentage is used on all open information panes. Move the cursor to either side of the button to change the setting. Select the left side of the button to decrease the value. Select the right side of the button to increase the value.
Page 124 Simrad ST90 Reference Manual Related topics Operating procedures on page 35 Defining settings related to user preferences and individual customizing on page 114 Colour Setup dialog box on page 472 Choosing the colours used to present the echoes Several different colour scales are predefined and available for the presentation of the echoes.
Page 125 Operating procedures Selecting measurement units The ST90 system is prepared to work with several international standards for units of measurements. From the page you control which units of measurements are used. Units About this task The user interface presents many measurements. These measurements are for example related to depth, range and distance.
Page 126 Simrad ST90 Reference Manual Depending on the current sea and weather conditions, you may need to change these values frequently. About this task You must correctly set the sound speed through the water to obtain accurate echoes. Several parameters are required to calculate the correct sound speed value. If these parameters are unknown, use the default value of 1494 m/s.
Page 127 Operating procedures If an alarm limit is exceeded a relevant message is issued by the ST90 system. At the same time, the relevant descriptive text is provided with a dark background. Procedure Open the menu. Setup On the menu, select Setup Installation Observe that the...
Page 128 Simrad ST90 Reference Manual Hull Unit You must specify a maximum speed for the vessel. This speed can match the hull unit specification, or you can choose a lower speed for increased safety. Note We strongly recommend that you do not specify a higher speed than the hull unit is designed for.
Page 129 Operating procedures Related topics Operating procedures on page 35 Defining settings related to user preferences and individual customizing on page 114 System Protection page on page 647 Defining the middle position of the transducer The hull unit is used to lower the transducer down below the ship’s hull when the ST90 system shall be used.
Page 130 Simrad ST90 Reference Manual the position is selected, make sure that the system protection functionality does not inhibit transmission. Procedure Make sure that you have sufficient water depth below the keel before you lower the transducer. Select on the top bar to open the...
Page 131 Operating procedures Saving, retrieving and maintaining user settings Topics Saving the current user settings, page 129 Choosing previously saved user settings, page 130 Renaming existing user settings, page 131 Deleting user settings that are no longer used, page 132 Choosing factory default settings, page 133 Saving the current user settings When you have spent some time working with the ST90 system, you are probably using specific settings that you know are efficient for your purpose.
Page 132 Simrad ST90 Reference Manual Select to save the chosen name. Observe that the name you have chosen appears on the list. Saved Settings Select to close the dialog box. Related topics Operating procedures on page 35 Saving, retrieving and maintaining user settings...
Page 133 Operating procedures Select the setting you want to use. Select Activate Selected Setting Select to apply your changes and close the dialog box. User Settings Related topics Operating procedures on page 35 Saving, retrieving and maintaining user settings on page 129 User Settings dialog box on page 434 User Settings Setup page...
Page 134 Simrad ST90 Reference Manual If you do not have a computer keyboard connected to your ST90 system, select button to open an on-screen keyboard. Keyboard Select to save the chosen name. Observe that the name you have chosen appears on the list.
Page 135 Operating procedures Observe that the dialog box opens. User Settings Observe the list of previously saved settings in the list. Saved Settings Select the setting you want to delete. Select Delete A small dialog box opens so that you can verify your choice. There is no "undo". Observe that the name you have chosen is removed from the list.
Page 136 Simrad ST90 Reference Manual Procedure Observe the menu. Main Its default location is on the right side of the display presentation. Select User Settings Observe that the dialog box opens. User Settings Observe the list. Factory Settings Select the setting you want to use.
Page 137 Operating procedures Defining the user-selected features on the Operating Panel Topics Selecting which operating panel to use, page 135 Assigning user settings or presentation modes to the Operating Panel, page 136 Assigning functionality to the rotary switches on the operating panel, page 138 Assigning functions to F1, F2 and F3 on the Operating Panel (Mk2), page 143 Selecting which operating panel to use The Operating Panel offers all necessary control functions for normal operation.
Page 138 Simrad ST90 Reference Manual When you work in the dialog box, you must always select to save Installation Apply the changes made on a page. You must do this before you continue working on a different page. Procedure Open the menu.
Page 139 Operating procedures Before you begin Before you can assign custom user settings to the operating panel, a selection of settings must be available from the dialog box. The dialog box is located User Settings User Settings on the menu. Main About this task page is used to select which physical hardware panel you use, and to Operating Panel...
Page 140 Simrad ST90 Reference Manual Select to specify what you want to use the buttons for. Mode Selection Assign one predefined user setting or presentation mode to each button on the Operating Panel. At the bottom of the page, select to save your settings.
Page 141 Operating procedures Vertical Range 2 This is the range setting in the second Vertical view when a "dual" presentation mode is used. Inspection Range This is the range setting in the Inspection view. Plane Range This is the range setting in the Plane view. Active Ping Range This is the range setting in the currently active view.
Page 142 Simrad ST90 Reference Manual Under , assign one function to each rotary switch on the Rotary Switch Options Operating Panel. Select Operating Panel Mk3. Under , assign one function to each rotary switch on Rotary Switch Options Rotate the Operating Panel.
Page 143 Operating procedures Auto Bearing This is an "on/off" function. Set this function to On to start the automatic search function. In the Auto Bearing mode the ST90 system will automatically search within defined sector limits. The sector is identified in the view using two angular symbols. The sector and step settings are made using the function on the menu.
Page 144 Simrad ST90 Reference Manual Place Marker Press to create a visual marker symbol at the cursor's current Place Marker position. Each marker is shown as a small triangle with or without a short identifying label. In this context, the phrase marker is used to identify a visual symbol placed in the display presentation.
Page 145 Operating procedures Continue your work in the dialog box, or select to close it. Installation Related topics Operating procedures on page 35 Defining the user-selected features on the Operating Panel on page 135 Operating Panel page on page 631 Operating Panel Mk1 on page 632 Operating Panel Mk2 on page 633...
Page 146 Simrad ST90 Reference Manual Zoom Place the cursor anywhere in the view, right-click and select . Only one zoom Zoom level is provided. Select one more time to restore the original view. Zoom Menu Off This is an "on/off" function. Unless you need to make frequent changes to the operating parameters, you may want to hide the menu from the display presentation.
Page 147 Operating procedures Send to External Each marker is identified with its geographical location. This marker location can be very useful for other instruments. For example, you can export this information to a chart plotter. You can configure your ST90 system to export marker information. You must choose a suitable output port and select which datagram formats to export.
Page 148 Simrad ST90 Reference Manual Increase Display Gain / Decrease Display Gain to increase or decrease the "strength" of the echo presentation. Display Gain Use this setting together with to adjust the sensitivity of the ST90 system. Gain controls the "amount" of echo that is displayed, in other words the Display Gain "strength"...
Page 149 Operating procedures Exporting sensor data, marker positions and technical information Topics Exporting target markers, page 147 Exporting sensor data to a peripheral system, page 148 Exporting technical information, page 150 Exporting target markers Under normal use, the ST90 system presents several different echoes simultaneously. Some of these are clearly more interesting than others.
Page 150 Simrad ST90 Reference Manual Select to open the page. Marker Output Select an output type from the list. Select the communication port you want to use. Select which marker type to export. Select to save the output format. Select to save your choices.
Page 151 Operating procedures Before you begin A compatible instrument is connected to the ST90 system. You have a vacant interface port on your Processor Unit. The interface port is set up with the correct communication parameters. About this task Information from various sensors provided as input to the ST90 system can also be useful for other systems on board.
Page 152 Simrad ST90 Reference Manual In order to see this data traffic, your ST90 system must be active and transmitting information to the peripheral system. dialog box provides one text box for incoming messages ( Port Monitor Rx Data and one for outgoing messages ( ).
Page 153 Operating procedures The total size of the selected files is shown below the list. Select to locate the desired folder. Browse You can also type the folder name. If you do not have a computer keyboard connected to your ST90 system, select the button to open an on-screen keyboard.
Page 154 Simrad ST90 Reference Manual Maintenance procedures Topics Lowering and hoisting the transducer from the sonar room, page 153 Setting up the interfaces to peripheral devices, page 160 Inserting the installation parameters, page 183 Installing and maintaining software, page 199 Testing the noise conditions and the sonar functionality, page 225...
Page 155 Maintenance procedures Lowering and hoisting the transducer from the sonar room Topics Lowering and hoisting the transducer using the Hoist/Lower Switch, page 153 Lowering and hoisting the transducer using the hand crank, page 155 Emergency lowering and hoisting using the two contactors, page 157 Lowering and hoisting the transducer using the Hoist/Lower Switch The Operating Panel controls the lowering and hoisting of the transducer.
Page 156 Simrad ST90 Reference Manual the keel before you lower the transducer. If your vessel is in dry dock, make sure that you have sufficient height between the hull and the dry dock floor. The space under the hull must be free from tools, scaffolding, personnel and other obstacles.
Page 157 Maintenance procedures Lowering and hoisting the transducer from the sonar room on page 153 Lowering and hoisting the transducer using the hand crank The Operating Panel controls the lowering and hoisting of the transducer. In case of a power failure the transducer can be hoisted or lowered manually by means of a hand crank.
Page 158 Simrad ST90 Reference Manual Use a spanner to open the door on the Motor Control Unit. WARNING High voltages are used. This equipment must be serviced only by qualified personnel familiar with high-voltage equipment and the potential hazards involved. Failure to observe this precaution could result in bodily injury.
Page 159 Maintenance procedures Note For normal operation from the Operating Panel, the switch must be set to REMOTE. Close the door on the Motor Control Unit. Insert the mains fuses for the hull unit. Related topics Maintenance procedures on page 152 Lowering and hoisting the transducer from the sonar room on page 153 Emergency lowering and hoisting using the two contactors...
Page 160 Simrad ST90 Reference Manual WARNING This operation overrides the upper and lower limit switches. The contactors must be released before the transducer reaches upper or lower position. Failure to do so may result in serious mechanical damage to the hull unit.
Page 161 Maintenance procedures Use a small screw driver, and press the spring return actuator to apply voltage to the motor. Hoist the transducer and STOP before you reach the upper position. Locate the (S302). Set the switch to position REMOTE. Hoist/Lower Switch Note For normal operation from the Operating Panel, the switch must be set to REMOTE.
Page 162 Simrad ST90 Reference Manual Setting up the interfaces to peripheral devices Topics Installing navigation sensors and other sensors, page 160 Setting up the serial and Ethernet (LAN) port parameters, page 162 Setting up the input from a navigation system (GPS), page 163...
Page 163 Maintenance procedures Note Just making changes and selecting at the bottom of the page will not install anything. Select what to install, define the relevant parameters, and then select Procedure Open the menu. Setup On the menu, select Setup Installation Observe that the dialog box opens.
Page 164 Simrad ST90 Reference Manual Setting up the serial and Ethernet (LAN) port parameters For any sensor interface to work, the communication parameters must be set up correctly. The ST90 software automatically scans the Processor Unit to locate and identify the available communication ports.
Page 165 Maintenance procedures On the left side of the dialog box, select Installation I/O Setup Observe that the available serial interface ports on the Processor Unit are listed. Set up the relevant serial or Ethernet (LAN) communication parameters. Select the interface port you want to set up. Select to open the dialog box.
Page 166 Simrad ST90 Reference Manual Before you begin This procedure assumes that: • You have a vacant interface port on your Processor Unit. • The interface port is set up with the correct communication parameters. • You are familiar with NMEA and other relevant datagram formats.
Page 167 Maintenance procedures , select the GPS sensor to import information from a global positioning Type system. Select which port you want to import the sensor information on. If you want to check the communication parameters, select Inspect Port Note You cannot make any changes here. To change the communication parameters, use the page.
Page 168 Simrad ST90 Reference Manual The sensor interface is added to the list on the Installed Sensors Sensor Installation page. 14 At the bottom of the dialog box, select to save your settings. Apply 15 Repeat for each sensor interface that you need to set up.
Page 169 Maintenance procedures About this task Note The input from a speed log is essential for operation. Without speed information, the ST90 system will neither be able to present correct navigational information, nor compensate for vessel movements. This lack of compensation will prevent the system from providing correct echo information.
Page 170 Simrad ST90 Reference Manual Note You cannot make any changes here. To change the communication parameters, use the page. I/O Setup If you want to check that the peripheral system is transmitting data to the ST90 system, select Monitor dialog box provides one text box for incoming messages (...
Page 171 Maintenance procedures Before you begin This procedure assumes that: • You have a vacant interface port on your Processor Unit. • You are familiar with NMEA and other relevant datagram formats. • You know how to set up the parameters for serial and local area network (LAN) communication.
Page 172 Simrad ST90 Reference Manual Open the menu. Setup On the menu, select Setup Installation Observe that the dialog box opens. This dialog box contains a number of Installation pages selected from the menu on the left side. On the left side of the...
Page 173 Maintenance procedures Select the offset value on the Y axis (athwartship) from the Ship Origin. Adjust with a positive value for Y if the sensor is located on the starboard side of the ship origin. Select the offset value on the Z axis (vertical) from the Ship Origin. Adjust with a positive value for Z if the sensor is located under the ship origin.
Page 174 Simrad ST90 Reference Manual About this task Any information in a datagram, for example, the vessel speed, may be provided in different datagrams from several sensors. Due to several reasons (environmental conditions, installation, configuration, accuracy, etc.), the numerical values provided can be different from one sensor to another.
Page 175 Maintenance procedures • With enabled, the priority list is used. Information is imported from the Auto sensor at the top of the list. If the sensor fails to provide information for more than 20 seconds, data from the next sensor is used. •...
Page 176 Simrad ST90 Reference Manual • The interface port is set up with the correct communication parameters. • The ST90 system is turned on and operates normally. • The new sensor is physically connected to the ST90 system using a serial or network cable.
Page 177 Maintenance procedures If you have a vacant COM port, select it, then select to delete it from the Remove list. At the bottom of the page, select to save your settings. Apply Close the dialog box. Installation Restart the ST90 system. A restart allows the Processor Unit to make the communication port available for other use.
Page 178 Simrad ST90 Reference Manual Related topics Maintenance procedures on page 152 Setting up the interfaces to peripheral devices on page 160 Motion Reference Unit page on page 616 Setting up the input from an internal motion reference unit (MRU) The information from a motion reference unit (MRU) (normally heave, roll and pitch information) is imported into the ST90 system to increase the accuracy of the echo data.
Page 179 Maintenance procedures On the menu, select Setup Installation Observe that the dialog box opens. This dialog box contains a number of Installation pages selected from the menu on the left side. On the left side of the dialog box, select Installation Motion Reference Unit Set up the interface.
Page 180 Simrad ST90 Reference Manual For "slave" operation, a remote system (for example K-Sync or Simrad TU40) must be available to provide trigger pulses. For "master" operation, a remote hydroacoustic system (sonar, echo sounder) is connected. This remote system must be set up in "slave" mode.
Page 181 Maintenance procedures using the current settings for ping interval. The operation is independent of any trigger signals arriving at the synchronization port. setting is not applicable when synchronization is switched Synchronization Delay off. • Master Master mode is used if the ST90 system shall operate as the controlling unit in a synchronized system.
Page 182 Simrad ST90 Reference Manual In Slave mode, the ST90 system waits for the delay time after the external trigger signal has arrived before transmitting the ping. This is often referred to as a post-trigger. From the list of ports available, select Synchronization Port This is the interface port currently used to transmit or receive synchronization signals.
Page 183 Maintenance procedures Network) or serial port). You can type a custom name to identify the sensor import. In the list of valid datagram formats, select the format(s) to be accepted by the ST90 system. For each relevant sensor you must insert the offset values that define the its physical location relative to the vessel’s coordinate system.
Page 184 Simrad ST90 Reference Manual 10 Select which datagram(s) you want to import from the sensor. 11 If relevant, specify a dedicated talker ID. 12 Select to save the new sensor interface you have defined. The sensor interface is added to the...
Page 185 Maintenance procedures Inserting the installation parameters Topics Correct installation parameters are crucial for sonar operation, page 183 Inserting the ship origin and dimensions, page 184 Inserting the installation parameters for the transducer, page 186 Inserting the installation parameters for the motion reference unit (MRU), page 190 Adjusting the built-in motion sensor offset, page 193 Adjusting the stabilization offsets for the external motion sensor, page 195 Correct installation parameters are crucial for sonar operation...
Page 186 Simrad ST90 Reference Manual Note Providing the correct value for this rotation is crucial for the sonar performance. An inaccurate or incorrect value will cause the sonar echoes to be presented at the wrong bearing. Use the page to define the physical location of the transducer in the Transducer vessel coordinate system, as well as the installation angles (rotation).
Page 187 Maintenance procedures Before you begin The ST90 system has been set up with its hardware units connected as specified in the Installation Manual • The ST90 system is turned on and operates normally. • The ST90 system is in Normal mode, but is set to Off to prevent transmissions.
Page 188 Simrad ST90 Reference Manual Observe that the dialog box opens. This dialog box contains a number of Installation pages selected from the menu on the left side. On the left side of the dialog box, select the small white triangle next to...
Page 189 Maintenance procedures trunk, the "forward" mark on the transducer shaft sleeve - and thus also "forward" on the transducer - may not point forward at all, but several degrees off the centre line. To obtain accurate echo presentations, this misalignment must be adjusted by changing the installation parameters.
Page 190 Simrad ST90 Reference Manual The angle measured from the bow to the 0° transducer mark. The 0° transducer mark is located outermost on the mounting flange, and it is marked as a red "0". Depending on the transducer mounting, it can be located at any angle on the mounting flange, not necessarily as shown in the illustration.
Page 191 Maintenance procedures Insert the relevant offset values. Do this as accurately as possible. : Insert the horizontal distance on the x-axis (fore-and-aft direction) X Offset between the transducer and the Ship Origin. : Insert the horizontal distance on the y-axis (athwartship direction) Y Offset between the transducer and the Ship Origin.
Page 192 Simrad ST90 Reference Manual Inserting the installation parameters on page 183 Transducer page on page 622 Inserting the installation parameters for the motion reference unit (MRU) The physical rotation of the motion reference unit (MRU) relative to the transducer is required to allow the ST90 system to adjust for roll and pitch as accurately as possible.
Page 193 Correct values for motion sensor rotation are critical for the sonar performance. The motion sensor offset values (its physical location relative to the vessels' coordinate system) are not important for sonar operation. The Kongsberg Seapath - and other GPS systems - allow you to define the MRU location ®...
Page 194 Simrad ST90 Reference Manual Procedure Open the menu. Setup On the menu, select Setup Installation Observe that the dialog box opens. This dialog box contains a number of Installation pages selected from the menu on the left side. On the left side of the...
Page 195 Maintenance procedures Adjusting the built-in motion sensor offset The information from a motion reference unit (MRU) (normally heave, roll and pitch information) is imported into the ST90 system to increase the accuracy of the echo data. The ST90 system is provided with a built-in motion sensor to provide electronic stabilization of the sonar beams.
Page 196 Simrad ST90 Reference Manual The angle measured from the bow to the motion sensor’s 0° reference. On the page, define the offset as rotation around Z. • If the 0° reference mark for the built-in motion sensor points to the starboard (right) side of the vessel’s centre line (as shown in the illustration), insert the offset as a...
Page 197 Maintenance procedures • If the 0° reference mark for the built-in motion sensor points to the starboard (right) side of the vessel’s centre line (as shown in the illustration), insert the offset as a number between 0 and +180 degrees. •...
Page 198 Simrad ST90 Reference Manual Note We recommend that you do this task in calm sea without any vessel movements. About this task It is very important that the motion sensor is set correctly with stabilization offset values that are adapted to the physical installation angles of the hull unit. Even a small offset error can give you very inccurate readings.
Page 199 Maintenance procedures Note Do not confuse stabilization offset with installation offset. The installation offset values describe the physical location and orientation of an item, and how this location is related to the vessel's coordinate system. The stabilization offset values describe any misalignments related to the measurements a sensor make.
Page 200 Simrad ST90 Reference Manual Write down the values. Select to save the selected settings and close the dialog box. Enable the input from the external motion sensor. On the menu, select Setup Installation On the left side of the dialog box, select...
Page 201 Maintenance procedures Installing and maintaining software Topics Installing a new version of the operating software, page 199 Removing the operating software, page 201 Updating the online help system, page 202 Adding online help in a new language, page 204 Obtaining and installing a software license for additional functionality, page 206 Setting up the Operating Panel (Mk2), page 208 Using more than one Operating Panel to control the sonar(Mk2), page 211 Using a single Operating Panel to control more than one sonar(Mk2), page 215...
Page 202 Simrad ST90 Reference Manual Procedure On the personal computer: Download the new software version. Unpack the ZIP file to access the executable application file. Copy the application file to a USB flash drive. Turn on the Processor Unit. Make the following preparations.
Page 203 Maintenance procedures Removing the operating software If you wish to replace your Processor Unit with a new model, or simply do not wish to use the ST90 system any longer, you can remove the software. Software removal may also be required during an upgrade.
Page 204 Simrad ST90 Reference Manual Select Programs and Features On the list provided, locate the software you shall uninstall. Select it, then select Uninstall Observe the dialog box. Remove existing settings Do not select any check boxes! Select in the dialog box to remove the software.
Page 205 Procedure Obtain the new help file. Download the help file from our website to a local computer. • https://www.kongsberg.com/st90 Unpack the ZIP file and place all the files in a folder named HTML Copy the folder to a USB flash drive.
Page 206 Simrad ST90 Reference Manual Update the existing help file. Open the relevant language folder. Rename the existing folder to HTML HTML_Old Copy the entire folder from the USB flash drive to the language folder. HTML Close File Explorer. Restart the ST90 system.
Page 207 Procedure Obtain the new help file. Download the help file from our website to a local computer. • https://www.kongsberg.com/st90 Unpack the ZIP file and place all the files in a folder named HTML Copy the folder to a USB flash drive.
Page 208 Simrad ST90 Reference Manual Related topics Maintenance procedures on page 152 Installing and maintaining software on page 199 Obtaining and installing a software license for additional functionality The ST90 system does not need any software licenses to operate. However, specific software license codes "unlocks"...
Page 209 Maintenance procedures Extended range By adding a specific software license you can increase the maximum range to 14.000 metres. Procedure On the menu, select Setup Installation Observe that the dialog box opens. This dialog box contains a number of Installation pages selected from the menu on the left side.
Page 210 Simrad ST90 Reference Manual Installing and maintaining software on page 199 Software License page on page 655 Setting up the Operating Panel (Mk2) The Operating Panel offers all necessary control functions for normal operation. Before it can be put to use, the Mk2 Operating Panel must be configured to permit Ethernet communication between the panel and the Processor Unit.
Page 211 Maintenance procedures Note If the Operating Panel fails to establish contact with the Processor Unit it will time out and switch itself off after two minutes. When this happens the blue indicator light stops flashing. Procedure If required, locate the IP and MAC addresses on the ETH1 Ethernet adapter in the Processor Unit.
Page 212 Simrad ST90 Reference Manual Close the window. Command Prompt Select the adapter that the Operating Panel is connected to. On the ST90 system, the Ethernet adapter is named Simrad Connect. Prepare the Operating Panel for use. Make the following preparations.
Page 213 Maintenance procedures Type or copy the MAC address into the relevant box. Select ADD Sonar PC Observe that your Processor Unit is added to the list. Close the web browser. Make sure that the Operating Panel is functional. Make sure that the blue indicator is lit, and check that you can move the cursor on the screen.
Page 214 Simrad ST90 Reference Manual • Ethernet switch (Make sure that your selected Ethernet switch has a large bandwidth capacity. Minimum 1 Gb (1000BASE-T) is required.) • Ethernet cables (It is very important that high-quality Ethernet cables are used. You must use Cat 5e STP (Shielded Twisted Pair) quality or better.) Neither tools nor instruments are required.
Page 215 Maintenance procedures Do not connect the Operating Panel to the Ethernet switch. Ethernet cables An Ethernet switch connected to ETH1 on the rear side of the Processor Unit can also be used to interface other peripheral systems such as echo sounders and positioning systems.
Page 216 Simrad ST90 Reference Manual The last digit "xx" in the IP Address can be any number between 21 and 29. Note Each Operating Panel must have a different IP Address. None of the panels must use the default IP Address.
Page 217 Maintenance procedures Select Apply IP Configuration When the new IP Address has been set in the Operating Panel, you will loose contact with the configuration page. To re-establish contact, use the following URL in your browser: 157.237.60.xx:5000 Select on the top menu to open the page. Sonar PCs Configuration Obtain the IP address.
Page 218 Simrad ST90 Reference Manual Before you begin The Operating Panel is installed as specified in the . The Processor Unit is Installation manual turned on. The following specific items are required for this task: • Computer mouse • Computer keyboard •...
Page 219 Maintenance procedures Connect each Processor Unit to the same Ethernet switch. Make sure that you use the correct Ethernet socket on the rear side of the computer: ETH1 Connect the power cable from the Ethernet switch to the AC power outlet. Ethernet cables An Ethernet switch connected to ETH1 on the rear side of the Processor Unit can also be used to interface other peripheral systems such as echo sounders and positioning...
Page 220 Simrad ST90 Reference Manual Note If you have previously changed the IP Address on the Operating Panel, you must use this address to open the configuration page. For each Processor Unit that is added: Locate the IP and MAC addresses on the ETH1 Ethernet adapter in the Processor Unit.
Page 221 Maintenance procedures Select the adapter that the Operating Panel is connected to. On the ST90 system, the Ethernet adapter is named Simrad Connect. Add a single Processor Unit to the Operating Panel configuration. Select on the top menu to open the page. Sonar PCs Configuration Type or copy the IP address into the relevant box.
Page 222 Simrad ST90 Reference Manual Before you begin The Operating Panel is installed as specified in the . The Processor Unit is Installation manual turned on. The following specific items are required for this task: • Personal computer • USB flash drive •...
Page 223 Maintenance procedures Uninstall the application. From the button in the lower left corner, open the Control Panel. Start In the Control Panel, select Select Programs and Features On the list provided, locate the software you shall uninstall. Refer to the chapter in the software release note to see which Software changes applications that needs to be updated.
Page 224 Simrad ST90 Reference Manual • USB flash drive • Personal computer (Optional) • Computer mouse (Optional) • Computer keyboard (Optional) • Ethernet cable (Optional) • Chrome web browser A firmware update for the Operating Panel was distributed with sonar software version 3.1.8.
Page 225 Maintenance procedures Note If you have previously changed the IP Address on the Operating Panel, you must use this address to open the configuration page. If you use the Processor Unit: Select to turn off the system. Power off In the dialog box, select to close the Power Off...
Page 226 Simrad ST90 Reference Manual If you use a separate computer: Disconnect the Operating Panel from the computer. Connect the Operating Panel to the Processor Unit. (Ethernet cable) On the Processor Unit desktop, double-click the ST90 icon to start the program.
Page 227 Maintenance procedures Testing the noise conditions and the sonar functionality Topics Measuring the noise in passive mode, page 225 Checking the status of the transceiver boards, page 228 Checking for unserviceable transducer elements by means of the Reception test on the Transducer page, page 230 Making a noise/speed curve to determine vessel noise, page 234 Measuring flow noise, page 238...
Page 228 Simrad ST90 Reference Manual Note With the vessel in port, the environmental conditions are not satisfactory. In the shallow waters of the port, noise from other vessels, dockyard workers or machinery will cause unreliable test results. If you do this tests in a busy harbour, or with noise sources present, the sensitive receivers will detect all the noise in the nearby waters.
Page 229 Maintenance procedures On the menu: Set to 1500 m. Main Range On the menu: Set to Off. Operation Tx Power On the menu: Active to CW Medium. Pulse Type to the start frequency: 14 kHz Frequency to Narrow. Vertical TX Sector to Off.
Page 230 Simrad ST90 Reference Manual Requirements Results Date/Signature: Related topics Maintenance procedures on page 152 Testing the noise conditions and the sonar functionality on page 225 Noise page on page 592 Checking the status of the transceiver boards The purpose of the...
Page 231 Maintenance procedures • : A device monitored by the diagnostic system is disabled. Blue • : No information is available. Grey dialog box and functionality is only provided for performance monitoring. Diagnostics The functionality offered by the dialog box is not required for normal use of the ST90 system.
Page 232 Simrad ST90 Reference Manual • :Status is OK. No actions are necessary. No indicator • :This is a warning. A closer investigation is recommended. Yellow • :This is an alarm. A closer investigation is required. • :A device monitored by the diagnostic system is disabled.
Page 233 Maintenance procedures For the best possible conditions, the ship must be "silent". • The water must be as deep as possible. Recommended minimum depth is 100 metres. • There must be no other vessels in the vicinity. • The vessel must lie still in the water. •...
Page 234 Simrad ST90 Reference Manual Select to apply your changes and close the dialog box. User Settings Make the following preparations. On the menu: Set to 1500 m. Main Range On the menu: Set to Off. Operation Tx Power On the...
Page 235 Maintenance procedures For the reception test to start, the ST90 system must be transmitting (pinging). The reception test validates each element in the transducer.The test returns the results using colour codes. • : The transducer element is fully operational. Green •...
Page 236 Simrad ST90 Reference Manual sources present, the sensitive receivers will detect all the noise in the nearby waters. Excessive noise or interference may be misinterpreted as physical defects. You may need to repeat the test several times, and - if necessary - implement a "silent ship"...
Page 237 Maintenance procedures Before you begin The ST90 system is turned on and operates normally. The vessel is at sea. Recommended minimum depth is 100 metres. If the ST90 system is operated from any other compartment than the bridge, an open two-way oral communication channel with the bridge is required.
Page 238 Simrad ST90 Reference Manual Note When the transducer is fully lowered, the speed of the vessel must not exceed the maximum speed permitted for the hull unit. This maximum speed depends on the physical size of the transducer, the mechanical construction of the hull unit, and how far down the transducer has been lowered.
Page 239 Maintenance procedures to Normal. Vertical TX Sector (Automatic Gain Control) to Off. (Reverberation Controlled Gain) to 0 (zero). to Off. Noise Filter Open the menu. Setup Select to open the dialog box. Diagnostics Select to open the page. Noise Select Start Noise Measurements Repeat for each vessel speed and operating frequency.
Page 240 Simrad ST90 Reference Manual Speed/Frequency/Noise Speed Frequency Noise level Sea state: Water depth: Use this table to record the values. Print it out and make multiple copies. Alternatively, you can type the values straight into a spreadsheet. Related topics Maintenance procedures...
Page 241 Maintenance procedures • If the ST90 system is operated from any other compartment than the bridge, an open two-way oral communication channel with the bridge is required. • Neither tools nor instruments are required. You may however find this equipment useful: –...
Page 242 Simrad ST90 Reference Manual Note When the transducer is fully lowered, the speed of the vessel must not exceed the maximum speed permitted for the hull unit. This maximum speed depends on the physical size of the transducer, the mechanical construction of the hull unit, and how far down the transducer has been lowered.
Page 243 Maintenance procedures to Off. Noise Filter Set the to Off. Bottom Filter Threshold On the menu: Select to open the dialog box. Setup Diagnostics Select to open the page. Noise Establish a separate communication line with the bridge to verify the vessel speed during the test.
Page 244 Simrad ST90 Reference Manual Speed/Frequency/Noise Speed Frequency Noise level Sea state: Water depth: Use this table to record the values. Print it out and make multiple copies. Alternatively, you can type the values straight into a spreadsheet. Related topics Maintenance procedures...
Page 245 Maintenance procedures Preventive maintenance Topics Preventive maintenance schedule, page 244 Requirements for personnel and tools, page 246 Approved anti-fouling paints, page 247 Preventive maintenance procedures, page 248 Accessing the inside of the installation trunk, page 267 442704/E...
Page 246 Simrad ST90 Reference Manual Preventive maintenance schedule In order to secure a long and trouble-free operation of the ST90 system, certain specific preventive maintenance tasks must be done. The tasks are organized in a preventive maintenance schedule. Note Even though a preventive maintenance schedule is provided, the ST90 system must be inspected regularly.
Page 247 Maintenance procedures Actions to be taken every month Once a month we recommend that you inspect and clean the various main units comprised by the ST90 system. Inspect the sonar room. Make sure that the ambient temperature in the room meets the environmental specifications.
Page 248 Simrad ST90 Reference Manual Related topics Maintenance procedures on page 152 Preventive maintenance on page 243 Preventive maintenance schedule on page 244 Inspecting and replacing sacrificial anodes on page 262 Visual inspection of the installation trunk on page 254 Inspecting and cleaning the transducer face...
Page 249 The list of approved anti-fouling paints can be found on our website. Always refer to the manufacturer's documentation and data sheets for a complete procedure and for relevant safety information. • https://www.kongsberg.com/anti-fouling-paints Important Do not paint the transducer with traditional hull plating paint. Use only the correct type of approved paint specified.
Page 250 Simrad ST90 Reference Manual Preventive maintenance procedures 442704/E...
Page 251 Maintenance procedures Topics Making sure that the environmental conditions in the sonar room meet the requirements, page 249 Inspecting and cleaning the display, page 250 Inspecting and cleaning the Processor Unit, page 251 Inspecting and cleaning the Operating Panel, page 251 Inspecting and cleaning the Transceiver Unit, page 252 Visual inspection of the hull unit, page 253 Visual inspection of the installation trunk, page 254...
Page 252 Simrad ST90 Reference Manual Related topics Maintenance procedures on page 152 Preventive maintenance on page 243 Preventive maintenance schedule on page 244 Preventive maintenance procedures on page 248 Inspecting and cleaning the display To ensure long and trouble-free operation of the display, it must be inspected and cleaned at regular intervals.
Page 253 Maintenance procedures Inspecting and cleaning the Processor Unit To ensure long and trouble-free operation of the Processor Unit it must be inspected and cleaned at regular intervals. Before you begin No special tools are required for this task. You will however need a commercially available mild detergent and a lint free cloth.
Page 254 Simrad ST90 Reference Manual Remove dust and salt water residue with a soft cloth moistened in fresh water. Use a mild detergent. Note Do not use strong solvents. Related topics Maintenance procedures on page 152 Preventive maintenance on page 243...
Page 255 Maintenance procedures Related topics Maintenance procedures on page 152 Preventive maintenance on page 243 Preventive maintenance schedule on page 244 Preventive maintenance procedures on page 248 Visual inspection of the hull unit Regular inspections of the hull unit is required to make sure that it operates properly. Before you begin Neither tools nor instruments are required.
Page 256 Simrad ST90 Reference Manual Make sure that the transducer can be lowered and hoisted without complications or obstacles. Make sure that the transducer cables can move freely when the transducer is lowered and hoisted. [Bridge]: Hoist the transducer to its upper position.
Page 257 Maintenance procedures Procedure Make sure that all power to the hull unit is disconnected. Cover the opening in the installation trunk with a solid wooden or steel plate to protect the transducer. Do a close visual inspection of the blister and the hull plating close to the installation trunk.
Page 258 Simrad ST90 Reference Manual dry dock, you must remove the marine growth. At the same time, you must inspect the transducer closely for physical damage. Before you begin The vessel is in dry dock. The ST90 system is turned off. The following tools and consumables are required: •...
Page 259 Maintenance procedures • Do not step on the transducer cables. • Do not damage the transducer cables. Avoid exposure to sharp objects. Procedure Make sure that all power to the hull unit is disconnected. Make sure that you have sufficient height between the hull and the dry dock floor. Lowering the transducer: Use a spanner to open the door on the Motor Control Unit.
Page 260 Simrad ST90 Reference Manual Biological material which is strongly rooted in the substrate can be removed carefully with a piece of wood or plastic. If required, you can also use citric acid. Apply, leave it working for several hours, and rinse thoroughly with fresh water.
Page 261 Maintenance procedures Painting the transducer face Marine growth (biological fouling) on the transducer face reduces the performance. We suggest that you paint the transducer face immediately after installation, and then again as often as required to maintain the protection. It is particularly important to do this if you operate in waters with a lot of marine growth.
Page 262 The use of anti-fouling paint will reduce the acoustical performance of the transducer. The properties of the transducer face combined with the thickness of the anti-fouling paint can also affect the overall performance. Kongsberg Discovery cannot be held responsible for any negative consequences of the anti-fouling paint.
Page 263 Maintenance procedures Turn the crank until the transducer is fully lowered. Clean the transducer thoroughly. Make sure that you remove all oil grease residues, as well as salt and other contamination. Allow the transducer surface to dry. Abrade the transducer surface using a sanding paper with 240 inch grit size. Do not exceed a surface roughness (R ) of 35 microns as this can influence the transducer performance.
Page 264 If the sacrificial anodes need to be replaced, you will need the necessary spare items as well as mounting materials. Contact your local dealer or distributor, or the Kongsberg Discovery support organization, for spare parts. • : 629-204660 Kongsberg Discovery part number •...
Page 265 Maintenance procedures About this task Sacrificial anodes are slowly disintegrating during normal wear and tear. They must be inspected whenever the vessel is in dry dock. If the sacrificial anodes are damaged or severely corroded you must replace them. We recommend that the sacrificial anodes are replaced when 1/3 of their bodies have been spent.
Page 266 Simrad ST90 Reference Manual • www.shell.com Manufacturer’s website • : 654‑078793 Kongsberg Discovery part number About this task The hull unit was lubricated as a part of the production process. It was thus provided fully lubricated when delivered to the vessel. During normal conditions, the lubricant applied will last for a long period of time.
Page 267 Manufacturer’s website • : 654-079835 Kongsberg Discovery part number About this task The hull unit was lubricated as a part of the production process. It was thus provided fully lubricated when delivered to the vessel. During normal conditions, the lubricant applied will last for a long period of time.
Page 268 Simrad ST90 Reference Manual Note Do not use excessive amounts of lubricant. If you add too much grease you may damage the internal bearings. Such damage may result in a large water leak, and it may cause the hull unit to malfunction.
Page 269 Maintenance procedures Accessing the inside of the installation trunk Topics Accessing the installation trunk by lowering the transducer, page 267 Accessing the installation trunk by lifting the hull unit, page 269 Accessing the installation trunk by lowering the transducer To do a visual inspection of the inside surface of the installation trunk you need access.Access is also required to inspect and or replace the sacrificial anodes.This access can be achieved by lowering the transducer as far as it goes.
Page 270 Simrad ST90 Reference Manual handling, installation or cleaning. Any holes and/or scratches in the transducer surface will allow water to penetrate the transducer. If a leak occurs, the transducer must be replaced. Procedure Make sure that the ST90 system is turned off.
Page 271 Maintenance procedures Use an 4 mm Allen key to rotate the screw clockwise until the motor brake is released. Turn the crank until the transducer is fully lowered. Hoisting the transducer: Mount the hand crank onto the stub shaft through the hole in the top cover. Turn the crank until the transducer is fully retracted.
Page 272 Simrad ST90 Reference Manual • Torque wrench • A crane (or other lifting device) capable of lifting the entire hull unit The lifting device must be rated to minimum twice the weight of the hull unit. An attachment point for the lifting device must be located directly above the hull unit.
Page 273 Maintenance procedures Note Make sure that you use the correct lifting eyes! There are two lifting eyes on each side of the hull unit. One is located on the top of the gantry, and one on the top of the transducer shaft.
Page 274 Simrad ST90 Reference Manual Make sure that the gasket is NOT covered with grease or lubricants. Place the gasket at its correct location. Note If you suspect that the gasket is damaged, replace it. If the gasket has been contaminated with dirt, grease or lubricants, it must be replaced.
Page 275 User interface User interface Topics User interface familiarization, page 274 Top bar, page 277 Replay bar description, page 299 Sonar views, page 301 Using markers in the ST90 user interface, page 351 Using target and position tracking, page 365 Information panes, page 373 Bottom bar, page 385 442704/E...
Page 276 Simrad ST90 Reference Manual User interface familiarization By default, the display presentation covers the entire screen. The display presentation provided by the ST90 system consists of specific visual elements that work together. The visual elements provide you with the echo information you need, they help you to control the functionality needed to understand this information, and finally, they allow you to control the operational parameters.
Page 277 User interface Replay bar During replay, the dedicated replay bar is shown immediately under the top bar. The replay bar allows you to retrieve saved files, and to control the playback. Sonar views Different sonar views are provided. Combinations of these views are organized in presentation modes selectable on the bottom bar.
Page 278 Simrad ST90 Reference Manual The bottom bar also presents the current colour scale, as well as time and date. You can further monitor the operational status of the transceiver. 442704/E...
Page 279 User interface Top bar Topics Top bar overview, page 278 Logo and product name, page 280 Menu, page 280 Screen Recording, page 281 Screen Capture, page 282 Record, page 283 Hull Unit, page 285 Information panes overview, page 286 Navigational information, page 289 Messages, page 296 Help, page 296 Operating system functions, page 297...
Page 280 Simrad ST90 Reference Manual Top bar overview The top bar is located at the top of the display presentation and stretches from the far left to the far right. The top bar gives you fast access to key functionality and navigational information.
Page 281 User interface Information panes The ST90 system offers several information panes to provide additional and detailed data from the presentations. The information panes are opened and closed from the top bar. The information pane is only available when an Inspection view is "active". Geographical position read-out The information shown on the top bar must not be used for vessel navigation.
Page 282 Simrad ST90 Reference Manual Top bar on page 277 Logo and product name The brand logo and product name are shown on the left side of the top bar. Description This information identifies the brand and the product. Double-click the logo to reduce the size of the ST90 system presentation. Double-click one more time to return to full screen presentation.
Page 283 User interface Operating Panel (Mk1) The Mk1 Operating Panel offers a dedicated button. (The Mk1 Operating Menu Panel is no longer provided with new sonars. This information is provided for legacy reasons.) Related concepts User interface on page 273 Top bar on page 277 Related tasks Hiding the menu system...
Page 284 Simrad ST90 Reference Manual System Protection page protection stops the recording automatically when the Screen Recording transducer is hoisted to its upper position. The function stops the recording Timer automatically when the specified time has elapsed. This page is located in the dialog box.
Page 285 User interface Related functionality Screen Captures dialog box You can choose either a single screen capture or a sequence with multiple screen captures. This dialog box is opened from the menu. Setup Operating Panel You can also use the button on the Operating Panel. Screen Capture Note Operating Panel (Mk1): Press...
Page 286 Simrad ST90 Reference Manual Use the processed data recording function provided by the ST90 system to record processed echo data. Related functionality Replay bar During replay, the dedicated replay bar is shown immediately under the top bar. The replay bar allows you to retrieve saved files, and to control the playback.
Page 287 User interface System Protection page on page 647 Recording dialog box on page 524 Hull Unit is located on the left side of the top bar. Select it to open the Hull Unit Hull Unit Control dialog box. Description dialog box allows you to lower and hoist the transducer. The dialog Hull Unit Control box also provides status information about the transducer position.
Page 288 Simrad ST90 Reference Manual Hull Unit Configuration page (Installation dialog box) The ST90 system can be provided with different hull units. The main difference between these hull units is the length of the transducer shaft, and thus also the physical height of the entire hull unit assembly. The same transducer is used on all hull unit types.
Page 289 User interface Before you open an information pane, you must first click in an Inspection view to make it "active". Select the relevant information pane on the top bar to open it. In most cases, the data in the information pane are only valid for the selected view. To close the information pane, select it one more time on the top bar.
Page 290 Simrad ST90 Reference Manual You can easily change the physical size and shape of each information pane. Click in its lower right corner, and drag to a new size. The function allows you Transparency to adjust how much you are able to see "through" the information panes you have opened.
Page 291 User interface Navigational information The navigational information is located in the middle of the top bar. To choose which information to be displayed on the top bar, use the functions in the Top Bar Display Options dialog box. The dialog box is located on the menu.
Page 292 Simrad ST90 Reference Manual Related references General page on page 566 Topics Geographical position read-out, page 290 Heading read-out, page 291 Speed read-out, page 292 Bottom Depth read-out, page 293 Motion read-outs (roll and pitch), page 295 Geographical position read-out When enabled, the vessel's current geographical position is shown on the top bar.
Page 293 User interface Related functionality Display Options dialog box To choose which navigation elements to see on the top bar, use the functionality provided in the dialog box. This dialog box is opened from the Display Options Display menu. Sensor Configuration page Instead of using the input from your positioning system, you can use manual position values.
Page 294 Simrad ST90 Reference Manual Note The information shown on the top bar must not be used for vessel navigation. You can set up datagram priorities for both heading and course information on the Sensor page. When enabled, the vessel's current heading is shown on the top bar.
Page 295 User interface Prerequisites To see this information on the top bar, you must enable it by using the functions in Top Bar dialog box. Select to open the page. The dialog Display Options General Display Options box is located on the menu.
Page 296 Simrad ST90 Reference Manual Prerequisites To see this information on the top bar, you must enable it by using the functions in Top Bar dialog box. Select to open the page. The dialog Display Options General Display Options box is located on the menu.
Page 297 User interface Motion read-outs (roll and pitch) When enabled, the navigational information on the top bar includes the vessel’s current roll and pitch movements. Prerequisites To see this information on the top bar, you must enable it by using the functions in Top Bar dialog box.
Page 298 Simrad ST90 Reference Manual Top bar on page 277 Related references General page on page 566 Messages is located on the right side of the top bar. Messages When the ST90 system generates a new message, on the top bar flashes.
Page 299 User interface To navigate in the help file, use the menu system on the left side and the interactive links within the publication. The context sensitive online help may not be available for the language you have chosen for the user interface. If your language is not supported, the English help is provided. Help is also available from the various dialog boxes in the user interface.
Page 300 Simrad ST90 Reference Manual Power Off hoists the transducer, turns off the operating power to all units, closes the Power Off program, and then automatically turns off the Processor Unit. Exit to Operating System closes the ST90 program. Exit to Operation System...
Page 301 User interface Replay bar description During replay, the dedicated replay bar is shown immediately under the top bar. The replay bar allows you to retrieve saved files, and to control the playback. How to open The replay bar is opened automatically when is set to Replay.
Page 302 Simrad ST90 Reference Manual Record RAW function to start and stop recording, split the current recording file (if it gets Record RAW too large), and set up the output parameters. Once you have defined the recording parameters, you can start recording by clicking the red circle and stop it by clicking the left rectangle.
Page 303 User interface Sonar views Topics Presentation modes, page 302 Horizontal view, page 303 Vertical view, page 320 Inspection view, page 328 Plane view, page 333 Echogram view, page 340 Catch view, page 343 270 Vertical view, page 346 442704/E...
Page 304 Simrad ST90 Reference Manual Presentation modes All echoes offered by the ST90 system are shown in rectangular views. Combinations of these views are organized in presentation modes. Each presentation mode offered by the ST90 system provides a selection of views in a predefined pattern. You must first find the presentation mode that meets your operational requirements, then you can change the size of the individual views.
Page 305 User interface Horizontal view The Horizontal view presents the 360 degrees area around your vessel from a bird’s eye view. The current bearing is shown with a solid line pointing out from the vessel position. To activate the Horizontal view, select a suitable presentation mode on the bottom bar, then click inside the view.
Page 306 Simrad ST90 Reference Manual Activate to place evenly spaced compass markers on the outer range Compass Cards ring in horizontal views. Range rings are a set of concentric circles labelled by distance from the vessel position. function adds markers to the history line. These markers indicate Minute Markers how far you have sailed in the last few minutes.
Page 307 User interface Although the presentation of the echoes is most important in this view, it also contains a number of other objects. These provide you with additional functionality, as well as information that is useful or important while using the ST90 sonar system. Related topics User interface on page 273...
Page 308 Simrad ST90 Reference Manual Minute markers / History line In order to maintain a visual presentation of your vessel’s previous movements, you can draw these with a line. This line is drawn after the vessel symbol in the sonar views, and visualizes your past movements. We refer to this line as the History Line.
Page 309 User interface Bearing The current bearing is shown with a solid line pointing out from the vessel position. You can change the angle by means of the function on the menu. You can also Bearing Main select the bearing line and drag it sideways. The bearing for the Vertical view is controlled by the bearing in the Horizontal view.
Page 310 Simrad ST90 Reference Manual Compass cards Activate to place evenly spaced compass markers on the outer range ring in Compass Cards horizontal views. The compass markers rotate based in the inputs from a navigation sensor. An update takes place when the vessel heading changes more than 1 degree.
Page 311 User interface Related topics User interface on page 273 Sonar views on page 301 Horizontal view on page 303 Current vector / Current flow A current sensor can be connected to the ST90 system. This can for example be an acoustic Doppler current profiler (ADCP).
Page 312 Simrad ST90 Reference Manual Cursor The position (bearing and distance) and depth of the cursor's location is shown in the lower right corner of the view. The depth is calculated from the current tilt and the distance from the vessel.
Page 313 User interface Click on the text to make it larger. Click one more time to restore the original font size. The purpose of the function is to adjust the echo level in the display presentations. By Gain adjusting the gain you can control how much amplification the ST90 system applies to the received echoes.
Page 314 Simrad ST90 Reference Manual Horizontal view on page 303 Inspection views The ST90 system offers three inspection beams. Each inspection beam is presented using an Inspection view. If you use several Inspection views, you can train and tilt the beams individually, and independent of the beams displayed in the other views.
Page 315 User interface Sonar views on page 301 Horizontal view on page 303 Markers / Manual Track / Priority Marker One or more markers can be placed in the view to identify specific echoes. Markers are shown as small triangles. Once an echo has been provided with a marker in the display presentation it is regarded as an object.
Page 316 Simrad ST90 Reference Manual Note When target tracking is activated, bearing and tilt are automatically adjusted to follow the movements of the tracked target. You can give priority status to one marker to identify the relevant object as the most important target or position.
Page 317 User interface function adds markers to the track line. These markers indicate how Minute Markers far you have sailed in the last few minutes. The minute markers are shown as small circles on the vessel’s track line. To draw the history line use the settings on the page.
Page 318 Simrad ST90 Reference Manual adds an adjustable range ring to the view. The ring is shown as a dotted Variable Range Ring circle with its centre on the vessel symbol. The current range is shown next to the circle. To change the range, left-click on the circle and drag to requested diameter. You can use to manually define a range.
Page 319 User interface The phrase target is used to identify an echo in the display presentation that you wish to act upon. The echo may be from a material item, a shallow, reef or rock, or from fish, fish schools or mammals. In most cases, the target will move and continuously change its position relative to your own vessel.
Page 320 Simrad ST90 Reference Manual Place the cursor over the echo you wish to track. Right-click to open the shortcut menu. Select Initiate Track Related topics User interface on page 273 Sonar views on page 301 Horizontal view on page 303 Tilt The current settings for range, gain and tilt are shown in the upper left corner of the view.
Page 321 User interface Horizontal TX Sector / Vertical TX Sector function allows you to control whether the system shall transmit Horizontal Tx Sector acoustic energy into the water in omni (360°) or within a defined sector. The Vertical Tx function is used to change the vertical opening angle in horizontal and vertical Sector swaths.
Page 322 Simrad ST90 Reference Manual Vertical view The Vertical view is oriented perpendicularly to the horizontal plane. The Vertical view shows you a "vertical slice" of the echo data. The direction of the vertical slice is indicated and controlled by the bearing line in the Horizontal view. The area covered by the vertical beam is shown as a triangle in the Horizontal view.
Page 323 User interface To fully understand how the beams behave in this view, use the Beam Visualization dialog box. This dialog box is opened from the menu. Setup menu controls which "cosmetic" features that used. Cosmetics menu controls which graphical elements that are shown in the different Visual Objects views.
Page 324 Simrad ST90 Reference Manual Bearing The bearing for the Vertical view is controlled by the bearing in the Horizontal view. You can change the bearing on the menu. You can also select the bearing line in a Main Horizontal view and drag it sideways.
Page 325 User interface Depth / Range / Range Rings / Variable Range Ring Horizontal dotted lines show the depth intervals. Use on the Depth Dividers Cosmetics menu to toggle these lines On or Off. Range rings are a set of concentric circles labelled by distance from the vessel position. The selected range is divided into identical distances.
Page 326 Simrad ST90 Reference Manual This is the vertical TX sector in a vertical swath. This is the horizontal TX sector in a vertical swath. Related topics User interface on page 273 Sonar views on page 301 Vertical view on page 320...
Page 327 User interface This function is opened from the menu. is located on the Cosmetics Cosmetics Display menu. Related topics User interface on page 273 Sonar views on page 301 Vertical view on page 320 Cursor The distance and depth of the cursor location is shown in the lower left corner of the view. The depth is calculated from the current tilt and the distance from the vessel.
Page 328 Simrad ST90 Reference Manual Markers Priority marker Coverage plot Variable range ring Horizontal dotted lines show the depth intervals. The range rings are shown as dotted curves. Note When target tracking is activated, bearing and tilt are automatically adjusted to follow the movements of the tracked target.
Page 329 User interface Vertical view on page 320 Purse depth A line of X’es in the vertical views shows the bottom of the purse seine. on the menu to toggle this line On or Off. Purse Depth Cosmetics Related topics User interface on page 273 Sonar views on page 301...
Page 330 Simrad ST90 Reference Manual Inspection view The ST90 system offers three inspection beams. Each inspection beam is presented using an Inspection view. If you use several Inspection views, you can train and tilt the beams individually, and independent of the beams displayed in the other views. You can use the Inspection view to study single fish, schools and bottom conditions in detail.
Page 331 User interface This is the start of the echogram The distance from the lower part to the upper part of the view corresponds to the currently selected range. Small labels are shown in the bottom left and right corners of the view. These labels show you the time in order to identify the scale of the horizontal axis.
Page 332 Simrad ST90 Reference Manual Before you can change the settings related to a view, the view must be active. To activate a view, click in it. The active view is identified with a thicker border. To fully understand how the beams behave in this view, use the...
Page 333 User interface Tilt The echo data is taken from the current bearing and tilt. The current tilt is shown with a solid line in the Vertical view. You can change the tilt angle by means of the function on the menu.
Page 334 Simrad ST90 Reference Manual Sonar views on page 301 Inspection view on page 328 Tooltips When you move the cursor over the echo data in the Echogram and Inspection views, small "tooltips" are shown to provide additional information. Several tooltips can be shown in the sonar presentation. When a tooltip is enabled, the cursor location is detected and a small information box is shown.
Page 335 User interface Plane view The Plane view presents the echo data in a horizontal sector ("fan"). The sector direction can be changed in both vertical and horizontal directions. The current tilt is shown with dotted lines in the view. Two types of dotted lines are used to distinguish between port and starboard side of the sector.
Page 336 Simrad ST90 Reference Manual To fully understand how the beams behave in this view, use the Beam Visualization dialog box. This dialog box is opened from the menu. Setup menu controls which "cosmetic" features that used. Cosmetics menu controls which graphical elements that are shown in the different Visual Objects views.
Page 337 User interface Two types of dotted lines are used to distinguish between port and starboard side of the sector. You can change the bearing on the menu. You can also click on the dedicated dotted Main bearing line in a Horizontal view and drag it. Related topics User interface on page 273...
Page 338 Simrad ST90 Reference Manual Tracked target information / Priority marker information Cursor information / Manual track information The tracked target is regarded as an object, and it is identified with a circle and two lines. The two lines reflect the size of the current tracking area.
Page 339 User interface Markers / Manual Track / Priority Marker One or more markers can be placed in the view to identify specific echoes. Markers are shown as small triangles. Once an echo has been provided with a marker in the display presentation it is regarded as an object.
Page 340 Simrad ST90 Reference Manual You can start manual tracking by placing multiple markers on a target echo that moves in the view. You can see the latest marker's course and speed in the view's lower right corner. The values are calculated based on the last two markers you created and the time between them.
Page 341 User interface Tilt The current settings for range, gain and tilt are show in the lower left corner of the view. Click on the text to make it larger. Click one more time to restore the original font size. When you change the tilt a dotted line presents the requested tilt while the solid line presents the actual tilt.
Page 342 Simrad ST90 Reference Manual Echogram view The Echogram view shows a time based history for a selected beam. Horizontal dotted lines show the depth intervals. The beam used to provide data is identified in the top left corner of the view.
Page 343 User interface You can change the tilt angle by means of the function on the menu. You Tilt Main can also click on the tilt line in a Vertical view and drag it up and down. If you place the cursor over the tilt presentation in the upper left corner of the Horizontal view you can use the scroll wheel to change the tilt.
Page 344 Simrad ST90 Reference Manual Before you can change the settings related to a view, the view must be active. To activate a view, click in it. The active view is identified with a thicker border. To fully understand how the beams behave in this view, use the...
Page 345 User interface Catch view Use the information in the Catch view to monitor the progress of the purse seine operation. The view does not offer any echo data. Description At the bottom of the display presentation, select a suitable presentation mode, and activate the Catch view.
Page 346 Simrad ST90 Reference Manual spent. When the entire net has been spent, a third rectangular marker is shown. In this phase the function is disabled. Fishing Gear The first timer stops when the progress bar reads 100%. This action starts the...
Page 347 User interface menu controls which "cosmetic" features that used. Cosmetics Before you can change the settings related to a view, the view must be active. To activate a view, click in it. The active view is identified with a thicker border. Related topics User interface on page 273...
Page 348 Simrad ST90 Reference Manual 270 Vertical view The 270 Vertical view is designed for purse seining. The presentation combines a horizontal "bow up" presentation with a vertical slice. At the bottom of the display presentation, select a suitable presentation mode, and activate the 270 Vertical view.
Page 349 User interface Activate to place evenly spaced compass markers on the outer range Compass Cards ring in horizontal views. Range rings are a set of concentric circles labelled by distance from the vessel position. A line of X’es in the vertical views shows the bottom of the purse seine. The depth is defined for the fishing gear you have chosen.
Page 350 Simrad ST90 Reference Manual The bearing for the Vertical view is controlled by the bearing in the Horizontal view. function controls the horizontal direction of the Vertical view, the Bearing audio beam and the beam in each Inspection view. By default, a new manually initiated tracked object is automatically given priority status.
Page 351 User interface Bow Marker The bow marker is shown as a dotted line drawn from the bow of the vessel symbol. The line reflects your vessel’s current heading. The bow marker can be enabled or disabled on the menu. Visual Objects Cursor The distance and depth of the cursor location is shown in the lower right (or left) corner of the view.
Page 352 Simrad ST90 Reference Manual Minute Markers In order to maintain a visual presentation of your vessel’s previous movements, you can draw these with a line. This line is drawn after the vessel symbol in the sonar views, and visualizes your past movements. We refer to this line as the Track Line.
Page 353 User interface Using markers in the ST90 user interface Under normal use, the ST90 system presents several different echoes simultaneously. Some of these are clearly more interesting than others. It can be a challenging task to tell these echoes apart. It can also be hard to keep track of the different echoes as both echoes and your own vessel move.
Page 354 Simrad ST90 Reference Manual Place Marker Select to create a visual marker symbol at the cursor's current position. Each Place Marker marker is shown as a small triangle with or without a short identifying label. You can also place a marker by pressing the button on the Operating Panel.
Page 355 User interface Press the appropriate button on the operating panel: Place Marker This action assumes that you have configured one of the buttons on your operating panel to perform this specific function. This configuration takes place on the Operating page. This page is located in the dialog box.
Page 356 Simrad ST90 Reference Manual Press the appropriate button on the operating panel: Delete All Objects This action assumes that you have configured one of the buttons on your operating panel to perform this specific function. This configuration takes place on the Operating page.
Page 357 User interface Right-click to open the shortcut menu. Select Set Priority Marker Open the menu. Objects In the object list, select the object line to activate the control buttons for that particular object. Select Priority Target Position track If you wish to establish a marker on a geographical position, use the standard marker.
Page 358 Simrad ST90 Reference Manual Place Marker Continuous is an on/off switch. Right-click and select Place Marker Continuous Place Marker Continuous on the shortcut menu. When enabled, left-click in a ST90 view to add new marker. Each click produces a new marker.
Page 359 User interface Select Initiate Track The tracked target is regarded as an object, and it is identified with a circle and two lines. The two lines reflect the size of the current tracking area. By default, a new manually initiated tracked object is automatically given priority status. The bearing line is automatically locked on the object to reflects its bearing.
Page 360 Simrad ST90 Reference Manual You can delete a single marker, or multiple markers simultaneously, by selecting in the menu. If you use on the shortcut menu you can Delete Objects Delete Marker only remove one marker at a time. Place the cursor on the marker you wish to delete.
Page 361 User interface menu provides additional functionality. Objects • Check the box to identify an object you want to act on. • Select the object line to activate the control buttons and retrieve information about the object. You can also click on the marker in the ST90 presentation to activate the control buttons. The selected marker is then shown with thicker lines.
Page 362 Simrad ST90 Reference Manual Objects menu menu does not provide any information about the circle marker. Objects Note The marker is stationary. Deleting a marker To delete the circle marker, press on the Operating Panel, or right-click to Circle Marker select on the shortcut menu.
Page 363 User interface Deleting the marker There are two ways to delete the marker. Place the cursor on the marker you wish to delete. Right-click to open the shortcut menu. Select Delete Own Ship Marker Open the menu. Objects In the list of objects, check the box for the object you wish to delete. Select Delete Objects menu...
Page 364 Simrad ST90 Reference Manual Gear Symbol You can activate this function from the short-cut menu or use the dedicated button on the Operating Panel. The gear symbol may be either a purse seine circle or a trawl symbol. The gear symbol is placed in the echo presentation when you activate it on the operating panel or in the shortcut menu.
Page 365 User interface has been spent, a third rectangular marker is shown. In this phase the Fishing Gear function is disabled. The first timer stops when the progress bar reads 100%. This action starts the second timer, which stops when you select Remove Gear Symbol When the process is finalized: •...
Page 366 Simrad ST90 Reference Manual • Relevant information about a priority target can be found in the lower left corner of the view. The information includes the location, speed, course and depth of the target, as well as an estimate of its area and volume.
Page 367 User interface Using target and position tracking The phrase target is used to identify an echo in the display presentation that you wish to act upon.The echo may be from a material item, a shallow, reef or rock, or from fish, fish schools or mammals.In most cases, the target will move and continuously change its position relative to your own vessel.You must decide which echoes that shall be classified as targets, and whether you shall start manual or automatic target tracking.
Page 368 Simrad ST90 Reference Manual Press on the Operating Panel. Target Track Place the cursor over the echo you wish to track. Right-click to open the shortcut menu. Select Initiate Track The tracked target is regarded as an object, and it is identified with a circle and two lines.
Page 369 User interface – Speed – Course – Depth The bearing and range values are relative to your vessel. You can see this information in the bottom left corner of the view. If you think the text is small and hard to read, double-click on the text field. This will increase the text size. Under certain circumstances the target tracking may not follow the intended echo.
Page 370 Simrad ST90 Reference Manual To delete multiple markers: Open the menu. Objects Check to select all the objects in the list. Select All Select Delete Press the appropriate button on the operating panel: Delete All Objects This action assumes that you have configured one of the buttons on your operating panel to perform this specific function.
Page 371 User interface Example When you are manoeuvring close to the coastline, or in otherwise working in confined waters, you may wish to avoid shallow waters and reefs. To keep track of potentially dangerous places, you can start position tracking. In this context, the phrase marker is used to identify a visual symbol placed in the display presentation.
Page 372 Simrad ST90 Reference Manual This action assumes that you have configured one of the buttons on your operating panel to perform this specific function. This configuration takes place on the Operating page. This page is located in the dialog box.
Page 373 User interface Relevant information about the tracked object can be found in the bottom left corner of the view. If you think the text is small and hard to read, double-click on the text field. This will increase the text size. Deleting a marker There are two ways to delete a marker.
Page 374 Simrad ST90 Reference Manual Objects menu menu provides a list of all current objects. This includes all types of objects Objects including those classified as targets. menu provides additional functionality. Objects • Check the box to identify an object you want to act on.
Page 375 User interface Information panes Topics Biomass information pane description, page 374 Size Distribution information pane description, page 377 Fish Position information pane description, page 380 Zoom information pane, page 383 442704/E...
Page 376 Simrad ST90 Reference Manual Biomass information pane description The Biomass information pane displays an index of the biomass in the in the current Inspection view. The biomass index is the value, or Nautical area scattering coefficient (NASC), measured with unit m...
Page 377 User interface The biomass value provides you with information about the fish abundance, and as such it may help you to decide if it pays off to start fishing. However, you must consider if the biomass value is a result of large amounts of plankton or bait, or if you have "real fish" below the keel.
Page 378 Simrad ST90 Reference Manual Related topics User interface on page 273 Informationpanes on page 373 442704/E...
Page 379 User interface Size Distribution information pane description The Size Distribution information pane presents a histogram with the echoes from single fish. The calculations are based on the fact that different fish species have different echo strength. The histogram presents the actual size of the fish by weight, length or echo strength (shown in dB).
Page 380 Simrad ST90 Reference Manual Note The measurement accuracy in the Size Distribution information pane depends on the vertical angle of the inspection beam. A beam that points nearly straight down corresponds to a traditional echo sounder. This gives the best accuracy since the fish is then viewed from above.
Page 381 User interface function allows you to adjust how much you are able to see "through" Transparency the information panes you have opened. You can adjust the setting from 0% (no transparency) to 90% (almost full transparency) in steps of 10%. Details Close Select this button to close the information pane.
Page 382 Simrad ST90 Reference Manual Fish Position information pane description The Fish Position information pane shows the position of the detected single fish echoes. The three circles in the information pane identify the operational frequencies. The echoes are seen from above. The colours indicate the echo strength.
Page 383 User interface This information pane can be useful during trawling. Keep an eye on the Fish Position information pane to make sure that you can manoeuvre the trawl through the areas with most fish. This is basically the same view as in the Echo Position information pane. However, the fish echoes are here viewed from above and not from the side.
Page 384 Simrad ST90 Reference Manual Setup Select to open the dialog box. This dialog box allows Setup Information Pane Options you to change the presentation parameters related to the information pane. Related topics User interface on page 273 Informationpanes on page 373...
Page 385 User interface Zoom information pane The Zoom information pane allows you to magnify a chosen area of the current Inspection view. How to open Before you open an information pane, you must first click in an Inspection view to make it "active".
Page 386 Simrad ST90 Reference Manual function allows you to adjust how much you are able to see "through" Transparency the information panes you have opened. You can adjust the setting from 0% (no transparency) to 90% (almost full transparency) in steps of 10%.
Page 387 User interface Bottom bar The bottom bar is located at the bottom of the display presentation and stretches from the left side to the right side. The tabs on the bottom bar allow you to choose presentation mode. How to open The bottom bar is available all the time.
Page 388 Simrad ST90 Reference Manual Date and time The date and time of the latest ping are displayed on the right side of the bottom bar. During replay the date and time in the recording are shown. Date and time are shown with a prefix.
Page 389 Menu system Menu system Topics About the menus and menu buttons, page 388 Using the “smart” menu buttons, page 389 Main menu, page 392 Operation menu, page 394 Display menu, page 398 Setup menu, page 403 Active menu, page 410 Objects menu, page 415 Visual Objects menu, page 421 Cosmetics menu, page 425...
Page 390 Simrad ST90 Reference Manual About the menus and menu buttons To select operating parameters on the ST90 system, use the menu system. The menus are organized in a tree structure with a main menu, a set of secondary menus, and several menu buttons.
Page 391 Menu system Unless you need to make frequent changes to the operating parameters, you may want to hide the menu from the display presentation. This gives you more space for echo information. To hide the menu, select on the top bar. To Menu retrieve the menu, select one more time.
Page 392 Simrad ST90 Reference Manual Select the left side of the button to decrease the numerical value. Select the right side of the button to increase the numerical value. Choosing a setting by moving the cursor horizontally Place the cursor on the button.
Page 393 Menu system Choosing a setting on the button menu Place the cursor on the button. Select the button to open the button menu. Choose the required setting., The chosen setting is applied, and the menu closes automatically. Several of the functions offer .
Page 394 Simrad ST90 Reference Manual Main menu menu is located at the top of the menu structure. It offers the most common Main functions for efficient use of the ST90 system. Unless you hide the entire menu system, the menu is visible at all times, even if you close the secondary menus.
Page 395 Menu system Range function allows you to specify the maximum distance from the transducer Range to the outer edge of the sonar beam. The range value shown and selected is by default only applied to the currently selected view. Note Even though you can choose a high range value, that does not mean that you can detect your targets in the same range.The range value only defines the range shown in the views.Actual target detection will always depend on the...
Page 396 Simrad ST90 Reference Manual Operation menu menu allows you to control the operating mode, the recording functionality, Operation and how the ST90 system transmits audio pulses ("ping") into the water. How to open Select the icon. Operation The icon is located under the menu.
Page 397 Menu system Functions and dialog boxes Operation function controls the operating mode of the ST90 system. You can set Operation it to Normal, Replay or Inactive. Transmission Mode lets you to control how often the ST90 system shall transmit Transmission Mode acoustic energy (ping) into the water.
Page 398 Simrad ST90 Reference Manual Processed Data to File The ST90 system can export several types of processed data file formats. Use to define which processed data formats to save, and where Processed Data to File to place the files. This page is located in the dialog box.
Page 399 Menu system Related topics Menu system on page 387 Operation menu: functions and dialog boxes on page 449 Pages in the Output dialog box on page 547 442704/E...
Page 400 Simrad ST90 Reference Manual Display menu menu provides basic functions related to the screen behaviour and Display presentation of the echo data. Use the menu to control the visual aspects of Display the system, and to show or hide various elements in the presentation.
Page 401 Menu system Functions and dialog boxes Visual Objects is an "on/off" button used to open the menu. The Visual Objects Visual Objects Visual menu controls which graphical elements that are shown in the different Objects views. These graphic elements include markers, vectors and targets that are tracked. The majority of the functions are "on/off"...
Page 402 Simrad ST90 Reference Manual Screen Brightness The intensity of the light given off by the display presentation can be adjusted. You can use this function to increase or decrease the light from the screen to match the ambient light. Display Options The top bar gives you fast access to key functionality and navigational information.
Page 403 Menu system Vertical View Orientation page allows you to decide whether the vertical views Vertical View Orientation should be presented from right to left, or from left to right. Off Centre When the vessel symbol is moved away from the centre of the view, more space is made available for the echo presentations.
Page 404 Simrad ST90 Reference Manual Docking Views Each presentation mode offered by the ST90 system provides a selection of views in a predefined pattern. These are placed at different positions with different sizes. With the function you can move and re-size the views in the display Docking Views presentation.
Page 405 Menu system Setup menu menu provides basic functions related to the installation parameters and the Setup communication with peripheral systems. How to open Select the icon. Setup The icon is located under the menu. Select the icon Main one more time to close the menu. Description Only brief descriptions are provided.
Page 406 Simrad ST90 Reference Manual Note Before you can change the settings related to a view, you must click inside the view to activate it. The changes you make are by default only valid for the active view. Several of the functions offer .
Page 407 Menu system Dead Reckoning function is used to improve the position of the track line relative Dead Reckoning to the actual position of the drifting fishing gear. For this function to operate, the ST90 system requires input from a speed log. Stabilization The ST90 system is provided with a built-in motion sensor to provide electronic stabilization of the sonar beams.
Page 408 Simrad ST90 Reference Manual Transceiver page offers key information about each transceiver board in the Transceiver Transceiver Unit. The purpose of the transceiver boards is to first create and transmit the acoustic pulses. After the transmission the transceiver boards receive the echoes from the seabed and/or the water column.
Page 409 Menu system information. The page allows you to define a datagram priority, Sensor Configuration so that the information from the "most reliable" sensor is used by the ST90 system. You can also define manual values in case a sensor is unserviceable, or not installed. I/O Setup To communicate with peripheral devices the Processor Unit offers several serial and/or Ethernet (LAN) ports.
Page 410 Simrad ST90 Reference Manual Echogram Settings The ST90 system offers several inspection beams. Each inspection beam is presented using an Inspection view. Use the page to set up basic functionality Echogram Settings for the Inspection views. Hull Unit Configuration The hull unit is used to lower the transducer down below the ship’s hull when the ST90 system shall be used.
Page 411 Menu system require the firmware on these transceiver boards to be upgraded. For more information, refer to the relevant software release note. Simrad Connect The purpose of the page is to make the ST90 system available for Simrad Connect remote control with a suitable portable device. About Each software release for the ST90 system is uniquely identified.
Page 412 Simrad ST90 Reference Manual Active menu menu offers parameters related to current views and data presentations Active provided by the ST90 system. How to open Select the icon. Active The icon is located under the menu. Select the icon Main one more time to close the menu.
Page 413 Menu system Note Before you can change the settings related to a view, you must click inside the view to activate it. The changes you make are by default only valid for the active view. Several of the functions offer .
Page 414 Simrad ST90 Reference Manual Vertical TX Sector function is used to change the vertical opening angle in Vertical Tx Sector horizontal and vertical swaths. Range Projection The distance to a target located anywhere in the water column can be measured in two ways.
Page 415 Menu system applied TVG (time variable gain). One page controls how fast the echogram travels horizontally across the presentation. The following pages are provided: Lines The echo presentations in the Inspection views resemble the echograms you see on an echo sounder. The page in the dialog box allows you to control Lines...
Page 416 Simrad ST90 Reference Manual Fish Position The Fish Position information pane shows the position of the detected single fish echoes. The information pane is only available when an Inspection view is "active". Use the page to set up the presentation parameters for the Fish Position Fish Position information pane.
Page 417 Menu system Objects menu menu is - in spite of its name and location - not a menu at all. This "menu" Objects opens a small view to monitor and control the objects you have defined in the sonar views. Each object is identified with a visual marker. How to open Select the icon.
Page 418 Simrad ST90 Reference Manual If you do not need to use the menu system, you can hide it. This allows more space for the echo presentation. Use the on the top bar to hide or show the menu. When the menu system is hidden,...
Page 419 Menu system • Select the object line to activate the control buttons and retrieve information about the object. Select All Check to select all the objects in the list. Select All Delete Select to remove all the objects you have selected in the objects list. Each Delete object is removed from the list and the ST90 presentation.
Page 420 Simrad ST90 Reference Manual dialog box offers a list of files to choose from. Select a file from Import Marker the list, then select to import it. If one or more of the markers already exist, you can overwrite, rename or cancel the operation.
Page 421 Menu system Object information In the object list, select the object line to retrieve object information about that particular object. Some information is only available for an object that is subjected to target tracking. Position Two fields present the geographical position of the currently selected object. Course/Speed In the list of objects, select an object on which you have started target tracking.
Page 422 Simrad ST90 Reference Manual • Position Input Format When the new marker is created, it is automatically assigned a unique identifier (UID) by the ST90 system. Messages dialog box dialog box allows you to read and acknowledge the messages. Messages Select on the top bar to open the dialog box.
Page 423 Menu system Visual Objects menu menu controls which graphical elements that are shown in the different Visual Objects views. These graphic elements include markers, vectors and targets that are tracked. The majority of the functions are "on/off" buttons to enable or disable these graphic elements in the various views.
Page 424 Simrad ST90 Reference Manual Position Object Sizes Select to create a visual marker symbol at the cursor's current position. Place Marker Each marker is shown as a small triangle with or without a short identifying label. When you start target or position tracking, a marker is used to identify the object.
Page 425 Menu system are shown in the currently active view. Select if you wish to use the Apply to all chosen setting in all the views. Minute Markers Tracks This is an "on/off" switch. When you start a target track, a dedicated marker is used to identify the object you are tracking.
Page 426 Simrad ST90 Reference Manual Bow Marker This is an "on/off" switch. This function displays a dotted line drawn from the bow of the vessel symbol. The line reflects your vessel’s current heading. Do not confuse this line with the bearing line.
Page 427 Menu system Cosmetics menu Use the functions on the menu to turn "cosmetic" elements in the sonar Cosmetics presentation on or off. How to open Select to open the menu. Cosmetics is located on the menu. The function is Cosmetics Display not available for the Inspection views.
Page 428 Simrad ST90 Reference Manual Range Rings This function enables range rings to be shown in the relevant views. Range rings are a set of concentric circles labelled by distance from the vessel position. The range rings are shown as dotted curves. Each ring has a range read-out. Use the Range function to toggle the range rings On or Off.
Page 429 Menu system The function is also useful in omni views. If you increase the tilt, and then exceed the range using the function, will indicate the current practical View Range Coverage Plot range with a circle. The same applies if you set to True.
Page 430 Simrad ST90 Reference Manual Shortcut menus Shortcut menus provide additional functionality for operation. How to open Right-click in the view to open the shortcut menu. Description To make a choice, right-click in the view and select the relevant option on the shortcut menu.
Page 431 Menu system By default, a new manually initiated tracked object is automatically given priority status. If another object has this priority, the status is automatically transferred to the new object. The priority is identified with a "P". On the page, de-select if you do User Settings Setup New Manually Initiated Track...
Page 432 Simrad ST90 Reference Manual Place Own Ship Marker Select to add a square symbol to the vessel’s current position Place Own Ship Marker in the echo presentation. The own ship marker is now regarded as an object. All information about the object is shown in the menu listed as "OSM".
Page 433 Menu system When you shoot the net: • Press on the Operating Panel. — Gear • Right-click and select on the shortcut menu. Place Gear Symbol The first timer starts when you select Place Gear Symbol A rectangular marker is placed in the view, and marks the position where the purse seine was shot.
Page 434 Simrad ST90 Reference Manual Once a ruler has been established you can not make changes to it. You can place as many rulers as you like in the view. Select on the shortcut menu to delete one or all Delete Ruler Delete All Rulers rulers from the view.
Page 435 Functions and dialog boxes Functions and dialog boxes Topics Main menu: functions and dialog boxes, page 434 Operation menu: functions and dialog boxes, page 449 Display menu: functions and dialog boxes, page 462 Setup menu: functions and dialog boxes, page 475 Active menu: functions and dialog boxes, page 491 Secondary functions and dialog boxes, page 520 Pages in the Output dialog box, page 547...
Page 436 Simrad ST90 Reference Manual Main menu: functions and dialog boxes menu is located at the top of the menu structure. It offers the most common Main functions for efficient use of the ST90 system. Unless you hide the entire menu system, the menu is visible at all times, even if you close the secondary menus.
Page 437 Functions and dialog boxes Description dialog box is used User Settings to store your favourite settings. These settings can be related to different operations, environmental conditions or basic personal preferences. You can use different settings to create as many user profiles as you like, and give them any name.
Page 438 Simrad ST90 Reference Manual The factory settings cannot be changed. Note Unless they are saved, all your current settings are lost when the factory settings are applied. Saved Settings "Saved settings" are those created and saved by you and other users.
Page 439 Functions and dialog boxes Use this function to delete one of your saved settings. To delete a user setting, select its name in the list, and then select . A small dialog box opens so that you can Delete verify your choice. Note The factory settings cannot be deleted.
Page 440 Simrad ST90 Reference Manual Specifications: Range • Minimum: 10 metres • Maximum: 5.000 metres • Extended range: 14.000 metres How to open This function is opened from the menu. Main Description The range setting defines from how "far" you want to detect echoes. In other words, you specify the horizontal or vertical distance from the vessel to the outer edge of the search area.
Page 441 Functions and dialog boxes Related functionality Operating Panel The Mk1 Operating Panel offers specific buttons to control the range in Range horizontal and vertical views. (The Mk1 Operating Panel is no longer provided with new sonars. This information is provided for legacy reasons.) The Mk2 Operating Panel is fitted with three rotary switches.
Page 442 Simrad ST90 Reference Manual presentations will also show this noise. Too much gain may therefore "distort" the presentation. The setting is by default only applied to the active view. It is identified with a thick border. You may wish to adjust the gain on all the views of the same type. To do this, click...
Page 443 Functions and dialog boxes Operating Panel page The Mk2 Operating Panel is fitted with three rotary switches. The Mk3 Operating Panel is fitted with two rotary switches. The switches are identified with numbers. Each switch can be assigned a function related to range, gain, bearing or tilt. The page is used to assign functionality to the programmable buttons.
Page 444 Simrad ST90 Reference Manual • Select the middle of the button and keep the mouse button pressed. Drag the cursor sideways to increase or decrease the value. Release the mouse button when requested value is shown. • In a Vertical view, click on the tilt line, keep the mouse button depressed, and drag the line up or down.
Page 445 Functions and dialog boxes • Select the middle of the button and keep the mouse button pressed. Drag the cursor sideways to increase or decrease the value. Release the mouse button when requested value is shown. • Select the middle of the button to open it. If you have a keyboard connected to the ST90 system, type the requested value.
Page 446 Simrad ST90 Reference Manual Link Inspection Beams This is an "on/off" switch. Activate to "connect" all the Link Inspection Beams inspection beams together. Select use the chosen setting in all the Apply to All Inspection views. When the beams are linked, they are tilted simultaneously. The...
Page 447 Functions and dialog boxes Related tasks Controlling the gain and range settings on page 49 Defining the user-selected features on the Operating Panel on page 135 Related topics Functions and dialog boxes on page 433 Main menu: functions and dialog boxes on page 434 Bearing function The Horizontal view presents the 360 degrees area around your vessel from a bird’s eye...
Page 448 Simrad ST90 Reference Manual Note The choice you make is by default only applied to the currently selected (active) view. The active view is identified with a thicker border. By default, a new manually initiated tracked object is automatically given priority status.
Page 449 Functions and dialog boxes This function can be assigned to the F1, F2 or F3 button on the Mk2 Operating Panel. Step Select to set the size of each tilt step (in degrees) in Auto Bearing mode. Step Select either side of the button to choose a value. Select the middle of the button to open it.
Page 450 Simrad ST90 Reference Manual Related topics Functions and dialog boxes on page 433 Main menu: functions and dialog boxes on page 434 442704/E...
Page 451 Functions and dialog boxes Operation menu: functions and dialog boxes menu allows you to control the operating mode, the recording functionality, Operation and how the ST90 system transmits audio pulses ("ping") into the water. How to open Select the icon. Operation The icon is located under the menu.
Page 452 Simrad ST90 Reference Manual Output dialog box, page 459 Audio function, page 460 442704/E...
Page 453 Functions and dialog boxes Operation function function controls the operating mode of the ST90 system. You can set it to Operation Normal, Replay or Inactive. How to open This function is opened from the menu. Operation Description The ST90 system offers several operating modes. •...
Page 454 Simrad ST90 Reference Manual Replay This mode allows you to play back previously recorded data. In Replay mode the ST90 system is not able to operate normally. Neither transmission nor reception takes place. For this reason, the ST90 system is inactive during playback.
Page 455 Functions and dialog boxes Interval The ST90 system transmits (pings) with a fixed time interval. permits you Ping Interval to choose the time (in milliseconds) between each transmission (ping). Maximum The ST90 system transmits (pings) as frequent as possible. The time between each ping (the ping rate) depends mainly on the current range.
Page 456 Simrad ST90 Reference Manual Related topics Functions and dialog boxes on page 433 Operation menu: functions and dialog boxes on page 449 Tx Power function to increase or decrease the output power. The output power is selected from Tx Power predefined steps.
Page 457 Functions and dialog boxes If you work in shallow and/or confined waters you may find it useful to reduce the output power to avoid reverberation. Some of our users claim that reducing the output may be useful if you are looking for scattered fish.
Page 458 Simrad ST90 Reference Manual You can also use the file(s) to experiment with the operational settings, as this will help you to gain more experience. The amount of data you can record is only limited by the size of your storage media.
Page 459 Functions and dialog boxes Record Processed function function allows you to record the processed echo data received Record Processed by the transducer. Which processing to apply is controlled by the settings on the page. is located in the dialog box. Processed Data to File Processed Data to File Output...
Page 460 Simrad ST90 Reference Manual How to open This function is opened from the menu. To activate the menu button the Operation following conditions must be met: • The relevant software license is installed. • The data output type and the recording parameters are defined on the Processed Data to page.
Page 461 Functions and dialog boxes Related functionality Processed Data to File page The ST90 system can export several types of processed data file formats. Use to define which processed data formats to save, and where Processed Data to File to place the files. This page is located in the dialog box.
Page 462 Simrad ST90 Reference Manual Processed Data to File page on page 554 Marker Output page on page 557 Relay Output page on page 559 Screen Recording page on page 562 Screen Captures File Location page on page 563 Audio function Select to turn the audio output on or off.
Page 463 Functions and dialog boxes Select any opening angle to specify the width of the listening beam from which the ST90 system will obtain audio information. The listening beam places the audio beam in the middle. The entire listening beam rotates when the audio beam rotates. Bearing function function controls the horizontal direction of the Vertical view, the audio Bearing...
Page 464 Simrad ST90 Reference Manual Display menu: functions and dialog boxes menu provides basic functions related to the screen behaviour and Display presentation of the echo data. Use the menu to control the visual aspects of Display the system, and to show or hide various elements in the presentation.
Page 465 Functions and dialog boxes Screen Brightness function, page 470 Display Options dialog box, page 471 Colour Setup dialog box, page 472 Docking Views function, page 473 Visual Objects function is an "on/off" button used to open the menu. Visual Objects Visual Objects How to open is located on the...
Page 466 Simrad ST90 Reference Manual Description Use the functions on the menu to turn "cosmetic" elements in the sonar Cosmetics presentation on or off. The majority of the functions are on/off buttons to enable or disable "cosmetic" elements in the sonar views. The function is not available for the Inspection views.
Page 467 Functions and dialog boxes Relative In Relative mode, the view is continuously updating its geographical position and orientation based on the vessel movements. The vessel symbols is kept motionless at the centre of the view. The map is only shown in Horizontal views when is set to True.
Page 468 Simrad ST90 Reference Manual Functions and dialog boxes on page 433 Display menu: functions and dialog boxes on page 462 View Range function to expand the range shown in the relevant views to any percentage of the View Range original setting.
Page 469 Functions and dialog boxes Display Gain function to increase or decrease the "strength" of the echo presentation. Display Gain How to open Open this function from the menu. Display Description Use this setting together with to adjust the sensitivity of the ST90 system. Gain Display controls the "amount"...
Page 470 Simrad ST90 Reference Manual Gain & TVG (Time Variable Gain) Noise Filter (2) AGC (Automatic Gain Control) RCG (Reverberation Controlled Gain) Display Gain Ping‑Ping Filter Note that (Time Varied Gain) and are not filters, but included only to Gain Display Gain illustrate the complete "signal path".
Page 471 Functions and dialog boxes Related topics Controlling the gain and range settings on page 49 Improving the recognition of fish and schools using receiver filters on page 75 Functions and dialog boxes on page 433 Display menu: functions and dialog boxes on page 462 Panel Backlight function The buttons on the Operating Panel have a built-in backlight to improve visibility on a dark...
Page 472 Simrad ST90 Reference Manual How to open Open this function from the menu. Display Description function is used to control how many colours you wish to use in the Colour Threshold echo presentation. The selected colour threshold is reflected in the bottom bar.
Page 473 Functions and dialog boxes Description When the bridge is dark, the light emitted by the display presentation can affect your night vision. In order to compensate for this, you can reduce the intensity. The Screen Brightness function allows you to reduce the brightness, and hence make the presentation darker. The intensity of light emitted by the display can be reduced from 100% to 0% in steps of 1.
Page 474 Simrad ST90 Reference Manual Related topics General page on page 566 Tooltip page on page 570 Own Ship page on page 570 Vertical View Orientation page on page 571 Off Centre page on page 572 Current Flow page on page 574...
Page 475 Functions and dialog boxes Details Palette Select a palette to suit the ambient light conditions and your personal preferences. The choice you make has no effect on the overall performance of the ST90 system. The following options are available: • Day Black: Select this palette for use on the bridge during dusk and dawn. •...
Page 476 Simrad ST90 Reference Manual How to open Open this function from the menu. Display Description Once the function is activated, the various views are placed in named Docking Views windows, and docking positions for these windows are shown. The docking positions show you where to drag and drop the selected view.
Page 477 Functions and dialog boxes Setup menu: functions and dialog boxes menu provides basic functions related to the installation parameters and the Setup communication with peripheral systems. How to open Select the icon. Setup The icon is located under the menu. Select the icon Main one more time to close the menu.
Page 478 Simrad ST90 Reference Manual Illustration: Each option controls the distance from Tracking Area the inner to the outer radius of the area. The width of the area is fixed, and stretches across a predefined number of beams. This means that the actual width depends on the distance from your vessel to the area.
Page 479 Functions and dialog boxes Tracking Area Setup dialog box on page 536 Fishing Gear function By defining the type of fishing gear you are using, the ST90 system may provide more accurate visual presentations. How to open Open this function from the menu.
Page 480 Simrad ST90 Reference Manual To start the process: • Press on the Operating Panel. — Gear • Right-click and select on the shortcut menu. Show Gear Symbol This places a circle marker in the view. The size and location of the marker is defined by the choices you have made with the function.
Page 481 Functions and dialog boxes The trawl image appears aft of the vessel symbol. When your vessel turns, the trawl presentation will reflect this, but the location and movements could be more precise. If you want an accurate trawl positioning, you must equip the trawl with relevant positioning sensors and connect the data to the ST90 system.
Page 482 Simrad ST90 Reference Manual Related topics Functions and dialog boxes on page 433 Setup menu: functions and dialog boxes on page 475 Environment dialog box Environmental parameters such as salinity, sound speed and water temperature all play an important part to present accurate echo data. Use the...
Page 483 Functions and dialog boxes Description The text in the menu buttons in the user interface can be provided in several different languages. Use the function to select the language you want to use. With a few Language exceptions, the chosen language will also be used for all other texts in the user interface. Note The context sensitive online help may not be available for the language you choose.
Page 484 Simrad ST90 Reference Manual applied. [..] In marine navigation a "dead" reckoning plot generally does not take into account the effect of currents or wind. Aboard ship a dead reckoning plot is considered important in evaluating position information and planning the movement of the vessel.
Page 485 Functions and dialog boxes • Select to disable the input. If you disable the input from the sensor, the beams will not be compensated for pitch and roll movements. During normal operation, always keep set to On. This is the default Stabilization setting.
Page 486 Simrad ST90 Reference Manual Description Each screen capture you make is saved in format on .jpg the Processor Unit hard disk. The file name reflects the current date and time. to define where to save Screen Capture File Location your screen captures. This page is located in the Output dialog box.
Page 487 Functions and dialog boxes Press to make a copy of the current display presentation. Screen Capture Top bar Select to make a copy of the entire display presentation. Screen Capture Screen Captures File Location page to define where to save your screen captures. This Screen Capture File Location page is located in the dialog box.
Page 488 Simrad ST90 Reference Manual • Spin the scroll wheel on the mouse to zoom in and out. • Press and hold the right mouse button, then move the mouse to change the angle. Change the operating parameter while the dialog is open. The change Beam Visualization you make to the beams are reflected in the presentation.
Page 489 Functions and dialog boxes • : No information is available. Grey Note dialog box and functionality is only provided for performance Diagnostics monitoring. The functionality offered by the dialog box is not required for normal use of the ST90 system. The dialog box does not permit you to change any operational settings. dialog box offers several pages.
Page 490 Simrad ST90 Reference Manual Description Exporting technical information from the ST90 system to a hard disk or USB flash drive is often useful. Both during normal use, and perhaps preferably during software and hardware troubleshooting, it can be helpful to share information.
Page 491 Functions and dialog boxes Prerequisites dialog box is not available when your ST90 system is set to Replay mode. Installation How to open This dialog box is opened from the menu. The page can also be opened Setup I/O Setup from the dialog box.
Page 492 Simrad ST90 Reference Manual About dialog box Each software release for the ST90 system is uniquely identified. The dialog box About identifies the current software version with its release date. The version described in this publication is 24.7.X. How to open This dialog box is opened from the menu.
Page 493 Functions and dialog boxes Active menu: functions and dialog boxes menu offers parameters related to current views and data presentations Active provided by the ST90 system. How to open Select the icon. Active The icon is located under the menu. Select the icon Main one more time to close the menu.
Page 494 Simrad ST90 Reference Manual AGC (Automatic Gain Control) function, page 508 RCG (Reverberation Controlled Gain) function, page 510 Target Threshold function, page 513 Noise Filter function, page 514 Horizontal Scroll function, page 516 Vertical Reference function, page 517 Echogram dialog box, page 518...
Page 495 Functions and dialog boxes Both the geometric spread and the absorption will also have an effect on the returned echo signal. That is why we normally refer to these factors as the two-way transmission loss. TVG (Time Variable Gain) compensates for this loss of acoustic energy. Details The TVG compensation is expressed as a logarithmic curve.
Page 496 Simrad ST90 Reference Manual User This setting allows you to define your own TVG curve. To choose your own TVG curve, use the dedicated function in the dialog box. Echogram Additional information for the technically minded When a sound pulse is travelling from the transducer through the water it will undergo geometrical spreading.
Page 497 Functions and dialog boxes Description presents the echoes based on the current information as well as the Ping-Ping Filter "history" of that specific target. The filter adds historical echo data for the target to the new information from the same target. This "mix" causes a more stable presentation, and some interference and noise are removed and/or reduced.
Page 498 Simrad ST90 Reference Manual Display Gain Ping‑Ping Filter Note that (Time Varied Gain) and are not filters, but included only to Gain Display Gain illustrate the complete "signal path". Details Ping‑Ping Filter Select the filter setting you want to use...
Page 499 Functions and dialog boxes function to define the centre frequency used by the transmitted pulse. Use the Frequency function to define the frequency range during the transmission. Bandwidth Note The choice you make is by default only applied to the currently selected (active) view. Before you can change the settings related to a view, you must click inside the view to activate it.
Page 500 Simrad ST90 Reference Manual CW (Continuous Wave) In CW transmissions the frequency is fixed during the entire duration of the pulse. If you select different centre frequency for each view, you will reduce the risk of interference between them. If you operate in the close vicinity of other vessels that are also using a ST90 system - or another sonar system operating within the same frequency range –...
Page 501 Functions and dialog boxes • Long pulses provides longer detection range. They make the ST90 system less sensitive for noise, but offer lower range resolution. • Short pulses provides shorter detection range. They make the ST90 system more sensitive for noise, but offer higher range resolution. For FM (Frequency Modulated) transmissions: •...
Page 502 Simrad ST90 Reference Manual Description Each frequency modulated transmission ("ping") from the ST90 system consists of a frequency sweep around the centre frequency. The difference between the lowest and the highest frequency in each transmission is referred to as bandwidth. The centre frequency in each transmission is chosen with the function.
Page 503 Functions and dialog boxes For each pulse type, you can select Short, Medium or Long. These options define the pulse duration. This is the current duration ("length") of the transmitted pulse. Open this function from the menu. Active Related topics Functions and dialog boxes on page 433 Active menu: functions and dialog boxes...
Page 504 Simrad ST90 Reference Manual If you select different centre frequency for each view, you will reduce the risk of interference between them. If you operate in the close vicinity of other vessels that are also using a ST90 system - or another sonar system operating within the same frequency range –...
Page 505 Functions and dialog boxes Horizontal TX Sector function In a horizontal swath the ST90 system transmits with a maximum horizontal opening angle of 360 degrees. Use the function to control the opening angle - and Horizontal Tx Sector thus the size - of the horizontal search sector (swath). This is the physical area that is covered with each transmission ("ping").
Page 506 Simrad ST90 Reference Manual This is the horizontal TX sector in a horizontal swath. This is the vertical TX sector in a horizontal swath. This is the vertical TX sector in a vertical swath. This is the horizontal TX sector in a vertical swath.
Page 507 Functions and dialog boxes Vertical TX Sector function function is used to change the vertical opening angle in horizontal Vertical Tx Sector and vertical swaths. Specifications Maximum Other options Horizontal swath Wide Narrow, Normal, Auto Vertical swath 90 degrees 30, 60 degrees Plane swath Wide Narrow, Normal, Auto...
Page 508 Simrad ST90 Reference Manual This is the horizontal TX sector in a horizontal swath. This is the vertical TX sector in a horizontal swath. This is the vertical TX sector in a vertical swath. This is the horizontal TX sector in a vertical swath.
Page 509 Functions and dialog boxes Range Projection function The distance to a target located anywhere in the water column can be measured in two ways. This can either be the horizontal distance to the target (True), or along the tilt angle (Slant).
Page 510 Simrad ST90 Reference Manual AGC (Automatic Gain Control) function (Automatic Gain Control) function runs an automatic analysis of the echo strength. Based on this analysis the ST90 system maintains a proper dynamic range based on all the current echo values. This is done by automatically reducing the gain if you have reverberation and noise, or increasing the gain if the acoustical conditions permit it.
Page 511 Functions and dialog boxes The most practical way to use the AGC (Automatic Gain Control) is to first switch it off. Adjust the echo presentation using the normal gain functionality until you have the best possible result, then activate the AGC. The AGC works best with even background (homogenous noise conditions) and pronounced targets.
Page 512 Simrad ST90 Reference Manual Ping‑Ping Filter Note that (Time Varied Gain) and are not filters, but included only to Gain Display Gain illustrate the complete "signal path". Details The automatic gain control (AGC) is disabled. Weak A mean value for all the echoes is established. The value is used as a threshold.
Page 513 Functions and dialog boxes There are several types of reverberation. Volume reverberation The volume reverberation is caused by minute plankton and air-bubbles in the water. This reverberation has often daily cycles in intensity. Surface reverberation The surface reverberation depends on the weather condition and the waves. Bottom reverberation The bottom reverberation depends on the roughness and physical properties of the sea bottom.
Page 514 Simrad ST90 Reference Manual Bottom Filter Noise Filter (1) Gain & TVG (Time Variable Gain) Noise Filter (2) AGC (Automatic Gain Control) RCG (Reverberation Controlled Gain) Display Gain Ping‑Ping Filter Note that (Time Varied Gain) and are not filters, but included only to...
Page 515 Functions and dialog boxes Use for scattered fish located close to the bottom. This setting uses a slightly different algorithm than the other scattered fish settings. Scattered Use for scattered fish. This setting uses a slightly different algorithm than the other scattered fish settings.
Page 516 Simrad ST90 Reference Manual Select the middle of the button to open a small menu with the available options. Select the left side of the button to select a "lower"' menu choice. Select the right side of the button to select a "higher"' menu choice.
Page 517 Functions and dialog boxes The filtering is done by overriding the automatic function for the preamplifiers. The number of amplifier stages used is a function of range instead of signal level. There is a total of six amplifier stages. By forcing the ST90 system to use (for example) three amplifier stages at a certain distance, interference will be clipped at this specific range.
Page 518 Simrad ST90 Reference Manual Medium The system starts using two amplifier stages and increases the number as a function of range. Strong The system starts using three amplifier stages and increases the number as a function of range. Related topics...
Page 519 Functions and dialog boxes To activate a view, click in it. The active view is identified with a thicker border. You can select the start range (the depth from which the view starts) and the range (the “length" of the transmitted beam) by means of the settings.
Page 520 Simrad ST90 Reference Manual Echogram dialog box dialog box allows you to control the echogram presentation in the Inspection Echogram views. Two pages control the horizontal lines and the echogram type with applied TVG (time variable gain). One page controls how fast the echogram travels horizontally across the presentation.
Page 521 Functions and dialog boxes How to open This dialog box is opened from the menu. You can also open the Active Information Pane dialog box by selecting in selected information panes. Options Setup Description dialog box offers a menu on the left side, and several pages Information Pane Options for pane parameters on the right side.
Page 522 Simrad ST90 Reference Manual Secondary functions and dialog boxes Topics Replay File dialog box, page 521 Audio Sector function, page 523 Recording dialog box, page 524 LAN Port Setup dialog box, page 526 Serial Port Setup dialog box, page 528...
Page 523 Functions and dialog boxes Replay File dialog box dialog box allows you to choose which file(s) to be used for playback. The Replay File files listed were generated automatically during recording. Each file is identified with the time and date it was made. How to open To open the dialog box, select...
Page 524 Simrad ST90 Reference Manual : The button shows you which file you are replaying. Select the button to Replay File open the dialog box. Replay File : This bar shows you the progress of the replay sequence. If you have...
Page 525 Functions and dialog boxes files, the maximum file size, and a prefix for the file names. This page is located in dialog box. This dialog box is opened from the menu. Output Operation System Protection page protection stops the recording automatically when the transducer is Recording hoisted to its upper position.
Page 526 Simrad ST90 Reference Manual The solid bearing line in the Horizontal view controls the audio beam. If you have two Horizontal views, the solid line in the Horizontal 1 view controls the audio beam. This function is opened from the menu.
Page 527 Functions and dialog boxes Details Folder Prefix You can save the data to the hard disk, or onto an external storage device. Type a text to use a prefix on the folder name. Note The data files will normally become very large. If you wish to record large amounts of data, make sure that you have enough space on your hard disk.
Page 528 Simrad ST90 Reference Manual Related topics Recording and replaying echo data on page 84 Record RAW function on page 455 Functions and dialog boxes on page 433 Secondary functions and dialog boxes on page 520 LAN Port Setup dialog box...
Page 529 Functions and dialog boxes Details Name This is a text box. Type a suitable name for the communication port. If you do not have a computer keyboard connected to your ST90 system, select the Keyboard button to open an on-screen keyboard. Local IP Address This is the Internet Protocol (IP) address of the Ethernet interface adapter located in your computer.
Page 530 Simrad ST90 Reference Manual to-point communication in a closed network, set the remote IP address manually. The application on the peripheral device will "listen" to this port number. If you want to establish point-to-point communication for data import from a peripheral device on the network, you may need to define the network port on this device.
Page 531 Functions and dialog boxes for serial communication defines standard parameters for such interfaces. According to their web site, the National Marine Electronics Association (NMEA) is "the unifying force behind the entire marine electronics industry, bringing together all aspects of the industry for the betterment of all in our business". For more information, see: http://www.nmea.org Details COM Port...
Page 532 The first time the Processor Unit is turned on after a ST90 system software installation, it will automatically do a search to find available serial ports. Since the Processor Unit was provided by Kongsberg Discovery as a part of the delivery, you can only use the ports that were fitted by the manufacturer.
Page 533 Functions and dialog boxes You can give your new serial port a more descriptive name in the Serial Port Setup dialog box. Related topics Setting up the interfaces to peripheral devices on page 160 I/O Setup page on page 549 Functions and dialog boxes on page 433 Secondary functions and dialog boxes...
Page 534 Simrad ST90 Reference Manual Description dialog box Port Monitor provides one text box for incoming messages ( ), and one for Rx Data outgoing messages ( ). Use Tx Data these boxes and your knowledge of the data communication to investigate the datagrams.
Page 535 Functions and dialog boxes Current Port This box identifies the port you are currently monitoring. If you wish to change your attention to a different serial or LAN port, you can choose the communication port here instead of returning to I/O Setup Related topics Setting up the interfaces to peripheral devices...
Page 536 Simrad ST90 Reference Manual Description Messages from the ST90 system can be related to any type of hardware or software errors. Messages also communicate events related to the operational performance and conditions. The messages are divided into different types related to their importance.
Page 537 Functions and dialog boxes Warnings A warning is issued when an irregular event occurs. Depending on the nature of the message, investigate what causes the warning. A restart is normally not required. Information An information messages is simply a notification of a minor operational event. No corrective actions are required.
Page 538 Simrad ST90 Reference Manual Acknowledge Acknowledge All Select to accept the currently selected message, or Acknowledge Acknowledge All accept all new messages of the current type. Related functionality Messages When the ST90 system generates a new message, on the top bar flashes.
Page 539 Functions and dialog boxes Illustration: Each option controls the distance from Tracking Area the inner to the outer radius of the area. The width of the area is fixed, and stretches across a predefined number of beams. This means that the actual width depends on the distance from your vessel to the area.
Page 540 Simrad ST90 Reference Manual Functions and dialog boxes on page 433 Secondary functions and dialog boxes on page 520 Add Fishing Gear dialog box By defining the type of fishing gear you are using, the ST90 system may provide more accurate visual presentations.
Page 541 Functions and dialog boxes Related topics Fishing Gear function on page 477 Using the markers and tracking features on page 60 Fishing Gear Setup page on page 651 Functions and dialog boxes on page 433 Secondary functions and dialog boxes on page 520 Auto Configuration dialog box function is used to change the vertical opening angle in horizontal...
Page 542 Simrad ST90 Reference Manual Description To lower the transducer select . To hoist the Down transducer select . To move the transducer to its predefined middle position, select Middle The numerical value shown in the dialog Hull Unit Control box measures the vertical travelling distance. It stops when the transducer reaches the middle position, and shows you the vertical distance.
Page 543 Functions and dialog boxes Hull Unit Lowering depth (m) Transducer cable (m) Maximum speed (knots) ST92 ST93 ST94 The same transducer is used on all hull unit types. If a Hull Unit Controller is supplied with the system, the Motor Control Unit cabinet is used as a junction box.
Page 544 Simrad ST90 Reference Manual Related topics Getting started on page 36 Hull Unit on page 285 Functions and dialog boxes on page 433 Secondary functions and dialog boxes on page 520 New Marker dialog box dialog box allows you to create a new marker based on the known depth New Marker and geographical position of a new target.
Page 545 Functions and dialog boxes Power Off dialog box The operating system functions are located on the right side of the top bar. Minimize are provided. You must always close the ST90 program Maximize/Normalize Power Off by selecting on the top bar. Power Off How to open Select...
Page 546 Simrad ST90 Reference Manual Description dialog opens Transceiver On/Off automatically when you turn on the ST90 system. It stays open during the start-up sequence, and closes when the ST90 system is fully operational. While the dialog box is open you can use it to monitor the start-up sequence.
Page 547 Functions and dialog boxes If you experience problems during the start-up sequence, the dialog offers a good source for troubleshooting. Try to open and select . The circular Advanced Restart indicator is also shown on the bottom bar. Additional information is available if you select Advanced Transducer position The graphic presentation illustrates the transducer's current physical position relative to...
Page 548 Simrad ST90 Reference Manual Stop Select to stop the Transceiver Unit. Select to access this feature. Stop Advanced Enabled Deselect to disable the functionality offered by the dialog box. Enable Related topics Functions and dialog boxes on page 433 Secondary functions and dialog boxes...
Page 549 Functions and dialog boxes Pages in the Output dialog box A key function of the ST90 system is its ability to export data. The purpose of the Output dialog box is to collect all functionality related to data output in one easily accessible location.
Page 550 Simrad ST90 Reference Manual How to open This page is located in the dialog box. To open, select it on the menu. Output Operation Description settings control how and where the recorded files are saved on the hard File Setup disk, or on an external storage device.
Page 551 Functions and dialog boxes Max(imum) File Size Define the maximum amount of bytes to be contained in one data file. Select for 1 GB file size. Maximum The data files will normally become very large. If you wish to record large amounts of data, make sure that you have enough space on your hard disk.
Page 552 Simrad ST90 Reference Manual Prerequisites dialog box is not available when your ST90 system is set to Replay mode. Installation dialog box is not available when your ST90 system is set to Inactive mode. Output How to open This page is located in the dialog box.
Page 553 Functions and dialog boxes Details Serial Ports The table shows the available serial ports on the Processor Unit. The list is automatically populated the first time you open the page after a software I/O Setup installation. The list reflects the initial number of serial ports that are available. If you add interface hardware to your computer, you must select to add the new ports to the list.
Page 554 Simrad ST90 Reference Manual LAN Ports This table shows the Ethernet (LAN) ports you have available. Each Ethernet adapter supports any number of network ports. Select to add a new port. Ports that have not been initiated correctly have a red background colour.
Page 555 Functions and dialog boxes previously released an unused port, but want to bring it back into use, you must also select If no serial ports are available the button is disabled. If one or more serial ports are available, you can select a port in the dialog box.
Page 556 Simrad ST90 Reference Manual Functions and dialog boxes on page 433 Operation menu: functions and dialog boxes on page 449 Setup menu: functions and dialog boxes on page 475 Output dialog box on page 459 LAN Port Setup dialog box...
Page 557 Functions and dialog boxes Note The data files will normally become very large. If you wish to record large amounts of data, make sure that you have enough space on your hard disk. Unless your computer is equipped with a very large disk, we recommend that you save the data to an external storage device.
Page 558 Simrad ST90 Reference Manual The chosen text will be used as prefix on all the file names. Observe the file name limitations in the operating system. Maximum File Size Define the maximum amount of bytes to be contained in one data file.
Page 559 Functions and dialog boxes Marker Output page Use the page to export target markers to a communication port. Each Output Marker marker is identified with its geographical location. This marker location can be very useful for other instruments. For example, you can export this information to a chart plotter. Prerequisites dialog box is not available when your ST90 system is set to Inactive mode.
Page 560 Select which datagram format(s) to export. MDS (Measured Data Shoal) Simrad MDS is a proprietary datagram format created by Kongsberg Discovery. It contains the location, bearing and depth of a tracked target. All information is presented relative to your own vessel. All data are related to the tracked target.
Page 561 Functions and dialog boxes TPP (Tracked Target Position) Simrad TPP is a proprietary datagram format created by Kongsberg Discovery. It exports the horizontal range, bearing and depth of a tracked target. All data are related to the tracked target. Select to allow export of the chosen data format.
Page 562 Simrad ST90 Reference Manual Description Information from various sensors provided as input to the ST90 system can also be useful for other systems on board. The ST90 system allows you to export the same sensor data that was originally imported. When activated, the selected sensor information is sent out on the chosen communication port (serial or LAN).
Page 563 Functions and dialog boxes • Navigation • Motion sensor Port Select the Ethernet port or serial port you want to use for the communication. Inspect Port Select to check the communication parameters for the port. The relevant Inspect Port port setup dialog box opens. You are not permitted to make any changes. You cannot define the communication port parameters here.
Page 564 Simrad ST90 Reference Manual Screen Recording page function allows you to record and save the echo presentation as a Screen Recording video file. Use the page to define where the video files are saved. Screen Recording Prerequisites dialog box is not available when your ST90 system is set to Inactive mode.
Page 565 Functions and dialog boxes You can use a USB flash drive to save the video files. This must be a high quality device with very fast data access. Related functionality Screen Recording Select on the top bar to start and stop the recording. Screen Recording System Protection page (Installation dialog box) protection stops the recording automatically when the...
Page 566 Simrad ST90 Reference Manual Prerequisites dialog box is not available when your ST90 system is set to Inactive mode. Output How to open This page is located in the dialog box. To open, select it on the menu. Output Operation...
Page 567 Functions and dialog boxes Top bar Select to make a copy of the entire display presentation. Screen Capture Screen Captures dialog box You can choose either a single screen capture or a sequence with multiple screen captures. This dialog box is opened from the menu.
Page 568 Simrad ST90 Reference Manual Pages in the Display Options dialog box dialog box is used to specify basic settings for the sonar presentation. Display Options How to open This dialog box is opened from the menu. Display Description This dialog box contains a number of pages selected from the menu on the left side.
Page 569 Functions and dialog boxes Description page offers a range of General "on/off switches". You use them to enable or disable the relevant functions. Note The information shown on the top bar must not be used for vessel navigation. Details Use icons on the main menu Select this function to use icons instead of text on the menu.
Page 570 Simrad ST90 Reference Manual Speed Select this check box to see the vessel's current speed on the top bar. The information must be provided by an external speed log or a navigation system connected to the ST90 system. Bottom Depth Select this check box to see the current water depth on the top bar.
Page 571 Functions and dialog boxes signal emissions and is based on International Atomic Time (TAI) with leap seconds added at irregular intervals to compensate for the slowing of Earth's rotation. Leap seconds keep UTC within 0.9 seconds of universal time, UT1. Wikipedia, Copied June 2014 Related functionality Top bar...
Page 572 Simrad ST90 Reference Manual Display Options dialog box on page 471 Tooltip page When you move the cursor over the echo data in the Echogram and Inspection views, small "tooltips" are shown to provide additional information. The page controls Tooltip which tooltips that are shown.
Page 573 Functions and dialog boxes How to open This page is located in the dialog box. The dialog box is Display Options Display Options located on the menu. Display Description The history line shows you the historic movements of your own ship. The line is drawn after the vessel symbol.
Page 574 Simrad ST90 Reference Manual How to open This page is located in the Display dialog box. The Options Display dialog box is located on the Options menu. Display Description Each Vertical view shows you a "vertical slice" of the echo data. The upper horizontal line in the view represents the water surface.
Page 575 Functions and dialog boxes Description function on Set New Ship Centre the shortcut menu moves the ship symbol away from the centre of the view. Place the cursor anywhere in the view, right-click and select . The function moves the vessel symbol Set New Ship Centre to the selected position.
Page 576 Simrad ST90 Reference Manual symbol to the centre of the presentation. This function is available on the shortcut menu in relevant views. Ship To Centre Select to move the own ship symbol back to the centre of the view. Ship to Centre...
Page 577 Functions and dialog boxes : Use this setting to present the direction from which the ocean current is From coming. Observe the inverted arrows. function shows you the speed and direction of the water current Current Vector under your vessel. One or more arrow are drawn to or from the vessel symbol to indicate the properties of the sea currents.
Page 578 Simrad ST90 Reference Manual How to open This page is located in the dialog box. The dialog box is Display Options Display Options located on the menu. Display Description All the presentation modes are listed. Open a presentation mode to find a list of all the views it supports.
Page 579 Functions and dialog boxes Tracked target information / Priority marker information Cursor information / Manual track information The tracked target is regarded as an object, and it is identified with a circle and two lines. The two lines reflect the size of the current tracking area. Marker The following information can be provided: Current...
Page 580 Simrad ST90 Reference Manual position, heading and speed. The bearing and tilt settings are automatically adjusted to follow the movements of the tracked target. The tracked target is regarded as an object, and it is identified with a circle and two lines. The two lines reflect the size of the current tracking area.
Page 581 Functions and dialog boxes GPS (Global Positioning System) Select to see the cursor's geographic position. Related topics Setting up presentation modes and views on page 104 Functions and dialog boxes on page 433 Display menu: functions and dialog boxes on page 462 Display Options dialog box on page 471 Presentation Modes page...
Page 582 Simrad ST90 Reference Manual Use the functionality offered by the page to choose which Presentation Mode presentation modes to choose from. This can be useful for several reasons: • A small display monitor may not be able to show you all the presentation mode tabs.
Page 583 Functions and dialog boxes Pages in the Environment dialog box Environmental parameters such as salinity, sound speed and water temperature all play an important part to present accurate echo data. Use the parameters to define Environment these values. Depending on the current sea and weather conditions, you may need to change these values frequently.
Page 584 Simrad ST90 Reference Manual Description You must correctly set the sound speed through the water to obtain accurate depth readings and fish echoes. Several parameters are required to calculate the correct sound speed value. If these parameters are unknown, use the default value of 1494 m/s.
Page 585 Functions and dialog boxes Sound Speed You must correctly set the sound speed through the water to obtain accurate depth readings and fish echoes. Calculated Select to allow the ST90 to calculate the sound speed and absorption Calculated based on your supplied parameters (frequency, salinity, acidity sound speed, and water temperature).
Page 586 Simrad ST90 Reference Manual Pages in the Diagnostics dialog box The ST90 system is a computerized sonar. There are hardly any analogue circuitry, and the possibility of traditional troubleshooting is limited. In order to rectify this, a built-in software application is available to offer test and maintenance functionality.
Page 587 Functions and dialog boxes Noise page, page 592 Hull Unit page, page 595 Element BITE dialog box, page 597 B-Scan page, page 598 Matrix page, page 602 Processor page page offers an overview of the parameters related to software version, Processor operation and network.
Page 588 Simrad ST90 Reference Manual https://en.wikipedia.org/wiki/Beamforming (November 2020) Details Operation These boxes provide generic information related to the operating parameters. Ping Count : The value is simply a consecutive count of transmissions ("pings") since Ping Count the ST90 system was turned on and activated.
Page 589 Functions and dialog boxes Functions and dialog boxes on page 433 Setup menu: functions and dialog boxes on page 475 Diagnostics dialog box on page 486 Element BITE dialog box on page 597 B-Scan page on page 598 Matrix page on page 602 Sensors page page presents a table with all the sensors currently connected to the ST90...
Page 590 Simrad ST90 Reference Manual Use the page to define which external sensors your ST90 system Sensor Installation will import information from. The page is located in the Sensor Installation Installation dialog box. The dialog box is located on the menu.
Page 591 Functions and dialog boxes information is provided. The parameters offer key information about the Board Information supply power to the selected transceiver board, as well as the environmental conditions. Note dialog box and functionality is only provided for performance Diagnostics monitoring.
Page 592 Simrad ST90 Reference Manual • :No information is available. Grey Board Information parameters offer key information about the supply power to Board Information the selected transceiver board, as well as the environmental conditions. The text field contains software versions and other information related to the firmware on the board.
Page 593 Functions and dialog boxes Details Boards A graphic presentation of the transceiver boards is provided. The visual presentation reflects the physical location of the boards in the Transceiver Unit. To select a transceiver board, click the "button". The corresponding transducer elements are identified. Each button provides a small colour coded indicator.
Page 594 Simrad ST90 Reference Manual • : The transducer element offers reduced performance. • : The transducer element is not working ("dead"). Black For more information, observe the tooltip provided for each element rectangle. A small number of unserviceable transducer elements are accepted, even for operational use.
Page 595 Functions and dialog boxes How to open This page is located in the dialog box. Diagnostics Open the dialog box from the menu. Diagnostics Setup Description page allows you to makes noise measurements for all sonar beams. The ST90 Noise system must be active when you run the tests.
Page 596 Simrad ST90 Reference Manual Note With the vessel in port, the environmental conditions are not satisfactory. In the shallow waters of the port, noise from other vessels, dockyard workers or machinery will cause unreliable test results. If you do this tests in a busy harbour, or with noise sources present, the sensitive receivers will detect all the noise in the nearby waters.
Page 597 Functions and dialog boxes The transducer cable is long. Electric noise from generators, pumps, cooling systems and other electric or electromechanical devices is easily picked up. The preamplifiers are very sensitive. They can easily pick up electrical noise from internal and external power supplies. The preamplifiers are also vulnerable to analogue noise created by their own electronic circuitry.
Page 598 Simrad ST90 Reference Manual How to open This page is located in the dialog box. Diagnostics Open the dialog box from the menu. Diagnostics Setup Description The Motor Control Unit contains all the electronics for controlling the hoisting and lowering of the transducer When you make the appropriate commands on the ST90 system, the Motor Control Unit will start and stop the motor.
Page 599 Functions and dialog boxes Hull Unit Control dialog box Select on the top bar to open the dialog box. Hull Unit Hull Unit Control dialog box allows you to lower and hoist the transducer. The Hull Unit Control dialog box also provides status information about the transducer position. You can monitor the current position of the transducer and make changes to the position defaults.
Page 600 Simrad ST90 Reference Manual How to open Open the dialog box from the page in the dialog box. Element BITE Processor Diagnostics Open the dialog box from the menu. Diagnostics Setup Description dialog box offers these pages: Element BITE •...
Page 601 Functions and dialog boxes Description In the B-Scan presentation, each element in the transducer is shown as a long coloured vertical rectangle. If you place the cursor on top of one of these rectangles, a small yellow tool-tip will identify key information about the channel. •...
Page 602 Simrad ST90 Reference Manual This screen capture shows the B-Scan pattern while testing the receiver in the near range. This is a generic illustration. Any similarities with specific products are accidental. Details Mode Select the operating mode of the diagnostic system.
Page 603 Functions and dialog boxes • Average decimation method means that the average value of the samples is shown. • Peak decimation method means that the strongest sample value is shown. Scale Choose the scale of the presentation. • Select if you want the scale of the presentation to set itself up Automatic automatically.
Page 604 Simrad ST90 Reference Manual • The value specifies the number of samples that do not contain any Zeroes echo. These are "dead" receiver channels. Related topics Processor page on page 585 Element BITE dialog box on page 597 Matrix page...
Page 605 Functions and dialog boxes • The identification of the transducer element • The identification of the transceiver board • The measured echo value (in dB) A rectangle with 32 black elements in the matrix view indicates a failure with a single transceiver board.
Page 606 Simrad ST90 Reference Manual Start Averaging The test process collects data from all the channels, and calculates the average value. It may often be useful to start the data collection after the end of the transmit pulse. Use to select the...
Page 607 Functions and dialog boxes Generator In order to run this test, a built-in signal generator is used. You must specify the amplitude and frequency to be used by this generator. The signal generator creates a test signal inserted in parallel with the signal measured on the transducer. Transmit Pulse Select Voltage...
Page 608 Simrad ST90 Reference Manual Pages in the Installation dialog box Before you use the ST90 system you must set it up to communicate with the relevant peripherals. Use the dialog box to set up all interfaces with external devices, Installation and to set up basic parameters related to installation and operation.
Page 609 Functions and dialog boxes Software License page, page 655 Transceiver Upgrade page, page 657 Sensor Installation page For the ST90 system to use and offer correct navigational information, one or more external sensors must be connected. Typical sensors are those providing navigational information (heading, speed or geographical position).
Page 610 Simrad ST90 Reference Manual Installation Most sensors are physically mounted somewhere on your vessel. For accurate measurements, the sensor locations - referenced to the vessel’s coordinate system - must be known to the ST90 system. Note Just making changes and selecting at the bottom of the page will not install anything.
Page 611 Functions and dialog boxes We recommend that you set up the relevant communication parameters before you use the port. To set up the communication parameters, use the page. The I/O Setup page is located in the dialog boxes. I/O Setup Installation Output Inspect Port...
Page 612 Simrad ST90 Reference Manual Datagram The list presents the available datagram formats for the chosen sensor type. Select the datagrams you want to import. • When you select sensor type ITI-FS, only one datagram can be selected; ITI-FS Datagrams. This is a group of datagrams that allows the ST90 system to import information from trawl systems.
Page 613 Functions and dialog boxes Offsets The physical location of each sensor must be defined with reference to the vessel’s coordinate system. The position of certain sensors must be defined as an offset to the Ship Origin in the coordinate system to maximize performance. These offset values are all required to allow the ST90 system to give you as accurate information as possible.
Page 614 Simrad ST90 Reference Manual Rotation Around Z Specify an angle (in degrees) to compensate for any deviation from the Z axis (vertical direction) in the vessel coordinate system. When you have set the parameters for a new sensor interface, select to save it.
Page 615 The majority of the datagrams used by the ST90 system are defined by the National Marine Electronics Association (NMEA). Other proprietary datagrams are defined by third- party organizations or by Kongsberg Discovery. Any information in a datagram, for example, the vessel speed, may be provided in different datagrams from several sensors.
Page 616 Simrad ST90 Reference Manual The ST90 system can communicate with several different sensor types. Use the page to define which external sensors your ST90 system will import Sensor Installation information from. You must also specify which datagram formats to use. The...
Page 617 Functions and dialog boxes • With enabled, the priority list is used. Information is imported from the Auto sensor at the top of the list. If the sensor fails to provide information for more than 20 seconds, data from the next sensor is used. •...
Page 618 Simrad ST90 Reference Manual Motion Reference Unit page The motion reference unit (MRU) measures the roll and pitch movements of the vessel. Some sensor models also measure heave. The information provided by the motion sensor is used by the ST90 system to stabilize the beams.
Page 619 Functions and dialog boxes Details Source Select Internal to use the built-in motion sensor. Select External to use a third- party motion sensor. Sensor • External: Select the datagram you want to use • Internal: Select the sensor you want to use. Select to disconnect the ST90 system from both external and internal motion None...
Page 620 Simrad ST90 Reference Manual Protocol This text reflects the chosen datagram format. The term datagram has been defined as follows: A self-contained, independent entity of data carrying sufficient information to be routed from the source to the destination computer without reliance on earlier exchanges between this source and destination computer and the transporting network.
Page 621 Functions and dialog boxes Related functionality Stabilization function allows you to enable or disable the input from the motion Stabilization sensor. If you disable the input from the sensor, the beams will not be compensated for pitch and roll movements. This function is opened from the menu.
Page 622 Simrad ST90 Reference Manual Installation Parameters page pages allow you to define the relationship between the physical Installation Parameters locations of the various sensors and the transducer. All relevant system units and sensors must be defined with their physical offset values in relation to the defined Ship Origin in the vessel’s coordinate system.
Page 623 Functions and dialog boxes all three axis in the vessel coordinate system meet. All physical locations of the vessel’s sensors (radar and positioning system antennas, echo sounder and sonar transducers, motion reference units, etc.) are referenced to the origin. Description Use the page with the ship's physical dimensions to create a virtual reference point Ship...
Page 624 Simrad ST90 Reference Manual Z Offset Select the offset value on the Z axis (vertical) from the default Ship Origin. This is the origin that was defined by the vessel designer and/or the shipyard when the vessel was built. Adjust with a positive value for Z if the new preferred origin is located under the default Ship Origin.
Page 625 Functions and dialog boxes Details X Offset Select the offset value on the X axis (fore-and-aft direction) from the Ship Origin. Adjust with a positive value for X if the transducer is located ahead of the ship origin. Y Offset Select the offset value on the Y axis (athwartship) from the Ship Origin.
Page 626 Simrad ST90 Reference Manual Description The ST90 system is provided with a built-in motion sensor to provide electronic stabilization of the sonar beams. It is placed inside the Motor Control Unit. The motion sensor measures the roll and pitch movements of the vessel.
Page 627 Functions and dialog boxes Rotation around the x-axis: In the positive horizontal direction (forward), a positive rotation is clockwise. Rotation around the y-axis: In the positive horizontal direction (starboard), a positive rotation is clockwise. (CD010101_300_002) Rotation around the z-axis: In the positive vertical direction (down), a positive rotation is clockwise.
Page 628 Simrad ST90 Reference Manual Related topics Inserting the installation parameters on page 183 Functions and dialog boxes on page 433 Setup menu: functions and dialog boxes on page 475 Installation Parameters page on page 620 Synchronization page The purpose of the...
Page 629 Functions and dialog boxes Note When you work in the dialog box, you must always select to save Installation Apply the changes made on a page. You must do this before you continue working on a different page. Details Synchronization Mode Choose which synchronization mode to use.
Page 630 Simrad ST90 Reference Manual port. The peripheral system may be any other hydroacoustic product (for example an echo sounder or sonar), or even a dedicated synchronization system. The synchronization mode is not fixed. It can be changed at any time during operation.
Page 631 Functions and dialog boxes Functions and dialog boxes on page 433 Setup menu: functions and dialog boxes on page 475 Installation dialog box on page 488 Units page The user interface presents many measurements. These measurements are for example related to depth, range and distance. From the page you control which units of Units measurements are used.
Page 632 Simrad ST90 Reference Manual Details Length Choose the unit of measurement for all the readouts related to range and distances in the ST90 system user interface. This may for example be the cursor location. Depth Choose the unit of measurement for all the presentations of depth.
Page 633 Functions and dialog boxes Operating Panel page The Operating Panel offers all necessary control functions for normal operation. It further allows you to assign certain functions to dedicated buttons and switches. The Operating page is used to select which physical hardware panel you use, and to assign Panel functionality to the programmable buttons.
Page 634 Simrad ST90 Reference Manual Related topics Functions and dialog boxes on page 433 Setup menu: functions and dialog boxes on page 475 Installation dialog box on page 488 Topics Operating Panel Mk1, page 632 Operating Panel Mk2, page 633 Operating Panel Mk3, page 639 Operating Panel Mk1 The Mk1 Operating Panel is connected to the Processor Unit with three cables.
Page 635 Functions and dialog boxes Before you can assign custom user settings to the operating panel, a selection of settings must be available from the dialog box. The User Settings User dialog box is located on the menu. Settings Main Communication This functionality is only applicable for the Mk1 Operating Panel.The Mk1 Operating Panel is connected to the Processor Unit with three cables.
Page 636 Simrad ST90 Reference Manual Details User Settings Presentation Modes On the Mk2 Operating Panel, the four buttons dedicated for user settings or presentation modes are located the top of the panel. Select to specify what you want to use the buttons for. Assign...
Page 637 Functions and dialog boxes Rotary Switch Options The Mk2 Operating Panel is fitted with three rotary switches. The switches are identified with numbers. Each switch can be assigned a function related to range, gain, bearing or tilt. Under , assign one function to each rotary switch on the Rotary Switch Options Operating Panel.
Page 638 Simrad ST90 Reference Manual The gain is increased and decreased in steps of 1 dB. The chosen display gain will automatically apply to all the beams. You can also control this functionality from the menu. Display Button Options The Mk2 Operating Panel is fitted with three function buttons.
Page 639 Functions and dialog boxes about the object is shown in the menu listed as "OSM". Use Objects Delete Own Ship on the shortcut menu to delete the marker from the current view. Marker Auto Bearing This is an "on/off" function. Set this function to On to start the automatic search function.
Page 640 Simrad ST90 Reference Manual Place Marker Press to create a visual marker symbol at the cursor's current Place Marker position. Each marker is shown as a small triangle with or without a short identifying label. In this context, the phrase marker is used to identify a visual symbol placed in the display presentation.
Page 641 Functions and dialog boxes Related topics Defining the user-selected features on the Operating Panel on page 135 Functions and dialog boxes on page 433 Setup menu: functions and dialog boxes on page 475 Operating Panel page on page 631 Operating Panel Mk3 The Mk3 Operating Panel is connected to the Processor Unit with a USB cable.
Page 642 Simrad ST90 Reference Manual Before you can assign custom user settings to the operating panel, a selection of settings must be available from the dialog box. The User Settings User dialog box is located on the menu. Settings Main Any user setting selected on the Operating Panel is identified in the upper left corner of the Horizontal view.
Page 643 Functions and dialog boxes Active Ping Bearing This is the bearing setting in the currently active view. Active Ping Tilt This is the tilt setting in the currently active view Display Gain Use this setting together with to adjust the sensitivity of the ST90 system. Gain controls the "amount"...
Page 644 Simrad ST90 Reference Manual Own Ship This is the same function as on the shortcut menu. Select Place Own Ship Marker this function to add a square symbol to the vessel’s current position in the echo presentation. The own ship marker is now regarded as an object. All information about the object is shown in the menu listed as "OSM".
Page 645 Functions and dialog boxes Use the page to export target markers to a communication port. Output Marker This page is located in the dialog box. To open, select it on the Output Operation menu. Place the cursor on the marker from which you want to export the target information.
Page 646 Simrad ST90 Reference Manual Adjust the so that you can see the targets without too much noise and Display Gain reverberation. The chosen setting is a matter of personal preferences. Open this function from the menu. Display Computer audio enabled for transducer movements The Operating Panel is not fitted with a loudspeaker.
Page 647 Functions and dialog boxes Example Description The echo presentation in the Inspection view resembles the echogram you see on an echo sounder. The Inspection view can be regarded as an "echo sounder" with an adjustable direction. In the ST90 system we use the phrase echogram to describe the information provided by the view.
Page 648 Simrad ST90 Reference Manual Prerequisites dialog box is not available when your ST90 system is set to Replay mode. Installation Description The ST90 system can be provided with different hull units. The main difference between these hull units is the length of the transducer shaft, and thus also the physical height of the entire hull unit assembly.
Page 649 Functions and dialog boxes System Protection page Safe operation of the ST90 system is made possible using multiple sensors that monitor the operation and the performance. Whenever a suspicious event takes place, a relevant message, warning or alarm is provided. The parameters allow you to System Protection define your own warning limits for the ST90 system.
Page 650 Simrad ST90 Reference Manual Tx Inhibit Power The high voltage supplied to the transceiver boards is monitored. You are not permitted to change the alarm limits. If this voltage differs from the defined tolerances, alarm message AKH11 will be initiated: Transmission is inhibited due to a high voltage in the power supply.
Page 651 Functions and dialog boxes Screen Recording function allows you to record and save the echo presentation Screen Recording as a video file. Each screen recording you make is saved in format on the .mp4 Processor Unit hard disk. The file name reflects the current date and time. Video data files will normally become very large.
Page 652 Simrad ST90 Reference Manual Recording allows you to record the unprocessed echo data received by the Record RAW transducer. You can save the data to the hard disk, or onto an external storage device. The data files can be played back on the ST90 system. You can keep the recorded files for future reference, training purposes and calibration.
Page 653 Functions and dialog boxes Setup menu: functions and dialog boxes on page 475 Installation dialog box on page 488 Fishing Gear Setup page By defining the type of fishing gear you are using, the ST90 system may provide more accurate visual presentations. Use the page to change the fishing gear Fishing Gear Setup properties to match your own equipment.
Page 654 Simrad ST90 Reference Manual • Set the sink rate. The sink rate defines how fast the gear will sink. For fishing with a purse seine, the intended process follows: To start the process: • Press on the Operating Panel. —...
Page 655 Functions and dialog boxes Trawl When you select a single or dual trawl, the right side of the dialog box changes to accept the trawl parameters. Related functionality Fishing Gear function function Fishing Gear allows you to define the size of your trawl or purse seine.
Page 656 Simrad ST90 Reference Manual User Settings Setup page page is established to offer generic settings that do not naturally User Settings Setup belong elsewhere. Prerequisites dialog box is not available when your ST90 system is set to Replay mode. Installation...
Page 657 Functions and dialog boxes Related functionality User Settings dialog box dialog box allows you to save the current user settings (your current User Settings selection of operational parameters), and to retrieve factory or previously saved user settings. This dialog box is opened from the menu.
Page 658 Simrad ST90 Reference Manual Note Once you receive your software license string(s), do not lose them. We suggest that you copy the information into a text file (for example Notepad), and add relevant information. Place the text file on the computer desktop, and make sure that backup copies are made.
Page 659 Functions and dialog boxes Functions and dialog boxes on page 433 Setup menu: functions and dialog boxes on page 475 Installation dialog box on page 488 Transceiver Upgrade page The ST90 system offers a large number of transceiver channels. 12 identical transceiver boards are used.
Page 660 Simrad ST90 Reference Manual Pages in the Echogram dialog box dialog box allows you to control the echogram presentation in the Inspection Echogram views. Two pages control the horizontal lines and the echogram type with applied TVG (time variable gain). One page controls how fast the echogram travels horizontally across the presentation.
Page 661 Functions and dialog boxes How to open This page is located in the dialog box. The dialog box is located on the Echogram Echogram menu. The dialog box is only available when an Inspection view is active. Active Description The settings on the page are all Lines related to visual appearance.
Page 662 Simrad ST90 Reference Manual use the Hardness Line and the Bottom Line functions simultaneously, but each can not be used together with the White Line. To disable the line, select None When you study the bottom hardness, you can learn more about the bottom.
Page 663 Functions and dialog boxes Ticks This function places short vertical markers on the top of the echogram. These lines are used to measure time or distance. • : No vertical markers are shown. None • : A short vertical line is drawn in the upper part of the echogram once every Time minute.
Page 664 Simrad ST90 Reference Manual How to open This page is located in the dialog box. The dialog box is located on the Echogram Echogram menu. The dialog box is only available when an Inspection view is active. Active Description Each Inspection view offered by the ST90 system can show you a different echogram type.
Page 665 Functions and dialog boxes Fish (40 log R) This setting offers larger amplification closer to the bottom. It has been designed to provide the best echoes from single fish. Targets (40 log R) This setting uses the same TVG compensation as Fish (40 log R), but additional filtering and compensation is implemented.
Page 666 Simrad ST90 Reference Manual The echogram is only drawn for pings that have a successful bottom detection. Pelagic A Pelagic echogram is mainly used when you wish to look at the water column starting from any distance below the sea surface down towards the bottom, but without seeing the bottom contour.
Page 667 Functions and dialog boxes Use the to choose the horizontal scale of the echogram. This controls the Horizontal Axis "speed" of the echoes. How to open This page is located in the dialog box. The dialog box is located on the Echogram Echogram menu.
Page 668 Simrad ST90 Reference Manual Label Small labels are shown in the bottom left and right corners of the view. These labels can contain time or distance to identify the horizontal axis of the echogram. You can hide the labels from view.
Page 669 Functions and dialog boxes Pages in the Information Pane Options dialog box The ST90 system offers several information panes to provide additional and detailed data from the presentations. The information panes are opened and closed from the top bar. Several of the information panes are fitted with a button.
Page 670 Simrad ST90 Reference Manual How to open The page is opened in the dialog box. To open, select the button Information Pane Options on the menu. Active You can also open the page by selecting in the information pane. Setup Prerequisites dialog box is only available when an Inspection view is active.
Page 671 Functions and dialog boxes Weight The histogram shows the size distribution as a weight in metric units. Follow Fish Gain Colour Scale Select this option to let the threshold follow the minimum level defined on the page for the corresponding channel. Colour Scale Manual Scale Choose the lower and upper limits (in dB) of the scale.
Page 672 Simrad ST90 Reference Manual Fish Position page The Fish Position information pane shows the position of the detected single fish echoes. The information pane is only available when an Inspection view is "active". Use the Fish page to set up the presentation parameters for the Fish Position information pane.
Page 673 Functions and dialog boxes Several specific parameters are available for studies of single fish. In order to detect single fish correctly, these parameters should be defined to suit the specie characteristics. Details Minimum Threshold Some echoes are stronger than others. If you have noise problems, or you are bothered with for example smaller fish (different species), jellyfish or plankton, you can use the function to adjust the sensitivity.
Page 674 Simrad ST90 Reference Manual location. Echoes from multiple targets or random noise will show great variation in phase. To remove the bad targets, the angle (phase) between the samples in the echo are measured. If the angle is too large, the echoes are deleted.
Page 675 Functions and dialog boxes Overlapping targets will not be identified with this function. Use the Minimum to handle Echo Length Maximum Echo Length Maximum CW Phase Deviation these. Distance Before Target Distance After Target These settings only apply to FM operation. settings define the required Distance Before Target Distance After Target...
Page 676 Simrad ST90 Reference Manual You can also open the page by selecting in the information pane. Setup Prerequisites dialog box is only available when an Inspection view is active. Information Pane Options Description For each specie, adjust the average size of the fish.
Page 677 Functions and dialog boxes use the page to change the weight/volume proportions. This will School Mass Adjustment increase the accuracy of the information in the view. How to open The page is opened in the dialog box. To open, select the button Information Pane Options on the menu.
Page 678 Simrad ST90 Reference Manual Concept descriptions Topics Important settings, page 677 Basic sonar theory, page 682 Acoustic noise, page 689 442704/E...
Page 679 Concept descriptions Important settings Topics AGC (Automatic Gain Control), page 677 TVG (Time Variable Gain), page 678 AGC (Automatic Gain Control) (Automatic Gain Control) function runs an automatic analysis of the echo strength. Based on this analysis the ST90 system maintains a proper dynamic range based on all the current echo values.
Page 680 Simrad ST90 Reference Manual The most practical way to use the AGC (Automatic Gain Control) is to first switch it off. Adjust the echo presentation using the normal gain functionality until you have the best possible result, then activate the AGC.
Page 681 Concept descriptions The automatic gain control (AGC) may override the effect of the TVG (Time Varied Gain). If you want to examine weak echoes that are very close to your vessel, use a low TVG setting (for example, 10 log R) or turn the TVG off. If a school is hard to see or follow when it moves closer to your vessel, try to reduce the TVG setting.
Page 682 Simrad ST90 Reference Manual The ST90 system allows you to choose your own compensation. You can choose any value from 0 Log R to 40 Log R. If you choose 0 Log R the TVG compensation is disabled. Some experimentation may be required to find the compensations that fit your purposes for individual catch and environmental conditions.
Page 683 Concept descriptions Related topics Concept descriptions on page 676 Important settings on page 677 442704/E...
Page 684 Simrad ST90 Reference Manual Basic sonar theory Topics Vessel coordinate system, page 683 Layers and deflections, page 686 What is sampling?, page 688 442704/E...
Page 685 Concept descriptions Vessel coordinate system The vessel coordinate system is established to define the relative physical locations of system units and sensors. When you have several different sensors and transducers on your vessel, and you wish each of them to provide accurate data, you need to know their relative physical positions. The antenna of a position sensor is typically mounted high above the superstructure, while a motion sensor is located close to the vessel’s centre of gravity.
Page 686 Simrad ST90 Reference Manual Vessel coordinate system origin The origin is the common reference point where all three axis in the vessel coordinate system meet. All physical locations of the vessel’s sensors (radar and positioning system antennas, echo sounder and sonar transducers, motion reference units, etc.) are referenced to the origin.
Page 687 Concept descriptions good alignment survey is critical for high quality results. Surveys are normally done by qualified and trained surveyors using proven survey equipment and methods. Related topics Concept descriptions on page 676 Basic sonar theory on page 682 442704/E...
Page 688 Simrad ST90 Reference Manual Layers and deflections Daily operation of the ST90 system may be disturbed by environmental situations that you are unable to control. Typical conditions are temperature and salinity layers, as well as deflections caused by increasing or decreasing water temperature.
Page 689 Concept descriptions may experience the opposite. The cold water will be close to the surface, and the water temperature increases with increasing depth. Water temperatures on a warm day When the temperature decreases (A) closer to the bottom, the sonar beam is deflected down as indicated by the illustration.
Page 690 Simrad ST90 Reference Manual What is sampling? The information from the transducer on the ST90 system is a continuous flow of analogue data. In signal processing, sampling is the reduction of this continuous signal to a discrete signal. A common example is exactly what we do in the ST90 system. We convert a sound wave (which is an analogue continuous-time signal) to a sequence of samples (which is a discrete-time signal).
Page 691 Concept descriptions Acoustic noise Topics Introduction to the acoustic noise challenge, page 689 Contributing factors, page 689 Self noise, page 691 Ambient noise, page 694 Electrical self noise, page 694 Reverberation, page 695 Some means to reduce acoustic noise, page 696 Introduction to the acoustic noise challenge Even with the advanced noise filtering offered by the sonar system, we must address the noise challenge.
Page 692 Simrad ST90 Reference Manual The majority of these factors can neither be controlled nor improved by means of installation methods or transducer locations. The quality and properties of the transmitting and receiving systems are key factors during our product development, while our end user documentation aims to help you to make the right filter settings during operation.
Page 693 Concept descriptions The transducer can pick up noise from: • Biological disturbances • Interference • Cavitation • Propeller noise • Flow noise • Acoustic noise from other hydroacoustic systems The transducer cable is long. Electric noise from generators, pumps, cooling systems and other electric or electromechanical devices is easily picked up.
Page 694 Simrad ST90 Reference Manual • Water-borne noise through the hull into the water to the transducer. Electrical noise Modern vessels are normally equipped with a lot of electric instruments such as hydroacoustic systems, radars, navigation systems, and communication equipment. Any electric instruments may in some cases cause electrical interference and noise.
Page 695 Concept descriptions will generate friction. The friction zone is called the flow boundary layer. The water flow in this boundary layer may be laminar or turbulent. • The laminar flow is a nicely ordered, parallel movement of the water. • The turbulent flow is a disorderly flow pattern, full of eddies. Turbulent flow Laminar flow Air bubbles...
Page 696 Simrad ST90 Reference Manual usually refers to the interaction of waves that are correlated or coherent with each other, either because they come from the same source or because they have the same or nearly the same frequency. Interference effects can be observed with all types of waves, for example, light, radio, acoustic, surface water waves or matter waves.
Page 697 Concept descriptions The most common source of electrical self-noise is hum. Hum is typically generated by low-quality power supplies. Transducer cables and sensitive electronic circuitry can easily pick up hum. At higher frequencies – where rather wide bandwidths are necessary – the noise from components, transistors or other analogue electronic may be a limiting factor.
Page 698 Simrad ST90 Reference Manual The illustration demonstrates how the sea bottom and the sea surface return echoes back to your sonar system. (CDCD010202_301_001) In this situation you will be able to identify the upper school of fish, but the lower school will be hidden in the shadow of the seabed rock formation.
Page 699 Concept descriptions Note The information here must be considered as general advice. Each system installation must be handled separately depending on the hull design and the other electrical and mechanical systems installed on the vessel. Reducing flow noise The shape of the hull plating around the installation trunk opening must be as streamlined as possible.
Page 700 Simrad ST90 Reference Manual Reducing rattle noise Ensure that no parts near the transducers can rattle as a result of water flow or vibrations. Reducing interference Interference from the transmission pulses from other hydroacoustic instruments on board the vessel is difficult to avoid. The problem may be reduced by choosing the working frequencies carefully and to some extent by separating the different transducers.
Page 701 Technical specifications Note At Kongsberg Discovery, we are continuously working to improve the quality and performance of our products. The technical specifications may be changed without prior notice. The specifications are provided in a separate publication. See our website for more information.
Page 702 Simrad ST90 Reference Manual Datagram formats The most common standard is NMEA 0183. The National Marine Electronics Association describes it as follows: The NMEA 0183 Interface Standard defines electrical signal requirements, data transmission protocol and time, and specific sentence formats for a 4800-baud serial data bus.
Page 703 Reference Manual Index acoustic noise (continued) reducing ........... 696 about .............. Reducing bottom and surface reverberation with the acoustic noise ..........689 RCG (Reverberation Controlled Gain) function ..79 ambient noise ..........694 reverberation ..........695 bottom bar ..........385 self noise ..........691 cavitation ..........
Page 704 Simrad ST90 alarm limits ............Bandwidth ............system protection ........124 function ........... 499 alternative origin ..........Bandwidth function ..........vessel coordinate system ....... 683 description ..........499 ambient noise ............ Baud Rate acoustic noise ..........694 Motion Reference Unit page ......618...
Page 705 Reference Manual bow marker (continued) colour scale (continued) Horizontal view ...........307 choosing ...........122 Bow Marker Colour Scale Visual Objects menu ........424 bottom bar ..........385 brightness Colour Setup ............. adjusting, echo presentations ......119 Changing the colour palette ("skin") used in the display buoy presentations ..........121 Adding markers for external objects to the echo...
Page 706 Simrad ST90 Continuous Wave (CW) (continued) cursor information (continued) Pulse Type ..........498 Cursor Readout page ........575 contributing factors ..........selecting ...........105 acoustic noise ..........689 Cursor Readout ..........noise ............689 page ............575 Coordinated Universal Time (UTC) ......
Page 707 Reference Manual depth description (continued) Cursor Readout page ........578 Environment dialog box ......480, 581 read-out (top bar) ........293 Export dialog box ........487 Depth File Setup page ........... 547 General page ..........568 Fish Position information pane ......380 Units page ..........
Page 708 Simrad ST90 description (continued) description (continued) Off Centre page .......... 572 Serial Port Setup dialog box ......528 online help ..........296 Setup menu ..........403 operating panel ..........24 Setup menu: functions and dialog boxes ..... 475 Operating Panel page ........631 Ship page ..........620...
Page 709 Reference Manual Diagnostics (continued) Display Gain ............dialog box ..........486 function ........... 467 making a noise/speed curve to determine vessel noise Display Gain function ......................234 description ..........467 Diagnostics dialog box .......... Display menu ............. description ..........486, 584 description ..........398 Hull Unit page ..........
Page 710 Simrad ST90 echo data files (continued) Ethernet ports (continued) deleting ............. 87 setting up ..........162 moving ............87 Exit to Operating System echo presentations ..........Power Off dialog box ......298, 543 brightness, reducing ........119 expanding ............capturing ..........96, 97 range ............
Page 711 Reference Manual Fish Length (continued) function (continued) Units page ..........630 bottom bar ..........385 Fish Position ............bottom depth (read-out) ....... 293 information pane ........380 Colour Threshold ........469 page ............670 context-sensitive online help ......296 Fish Position information pane ........ Cosmetics ..........
Page 712 Simrad ST90 functions (continued) Hardware ID (continued) Main menu ..........434 Software License page ........655 Operation menu ......... 449 heading Setup menu ..........475 read-out (top bar) ........291 Heading General page ..........567 heading sensor ..........gain interfacing ..........168 Horizontal view ...........336...
Page 713 Reference Manual Horizontal TX Sector (continued) how to (continued) Horizontal view ...........319 Capturing the display presentation in a video file ...101 Vertical view ..........323 Capturing the display presentation in an image ..96 Horizontal TX Sector function ......... Capturing the display presentation using one image for description ..........503 each ping ...........
Page 714 Simrad ST90 how to (continued) how to (continued) lower and hoist the transducer from the user interface set up the serial port parameters ..... 162 ..............37 Setting up input from buoys, fish aggregating devices Lowering and hoisting the transducer using the hand and other external objects ......
Page 715 Reference Manual I/O Setup page (continued) inspecting (continued) description ..........549 Processor Unit ..........251 important ............18 sacrificial anodes .........262 Before you turn on the ST90 system ....18 transceiver ..........252 If something breaks down ....... 18 Transceiver Unit .......... 252 Manual operation of the hull unit ...... 18 Inspecting and cleaning the computer ....
Page 716 Simrad ST90 interfacing (continued) LFM (Linear Frequency Modulation) heading sensor ........... 168 Pulse Type ..........498 speed log ..........166 Linear Frequency Modulation (LFM) ......interfacing a navigation sensor Pulse Type ..........498 summary ..........160 Lines ............... interference ............page ............658 acoustic noise ..........
Page 717 Reference Manual Manual maximum (continued) Water Column page ........583 ping rate ............ 43 manual track Maximum Cursor Readout page ........578 Transmission Mode function ......453 Manual Track Maximum File Size Horizontal view ........313, 337 Processed Data to File page ......556 manual track information ........
Page 718 Simrad ST90 Minimize (continued) MRU (internal) (continued) top bar .............297 setting up the input ........176 minute markers MRU (Motion Reference Unit) Horizontal view ...........314 page ............623 Minute Markers MRU (Motion Reference Unit) page ......Visual Objects menu ........422 description ..........623...
Page 719 Reference Manual noise/speed curve operating panel (continued) making .............234 using visual aids during the purse seine catch phase 67 normal Operating Panel ..........Selecting Normal mode ........40 backlight, adjusting ........119 Normal configuring ..........211, 215 Operation function ........451 page ............
Page 720 Simrad ST90 output power (continued) page (continued) decreasing ..........46 Sensor Configuration ........612 increasing ...........46 Sensor Installation ........607 overview ............Sensors ............ 587 computer ........... 23 Ship ............620 display organization ........274 Size Distribution ..........667 display views ..........274 Software License .........
Page 721 Reference Manual pitch (continued) Power Off dialog box ..........read-out (top bar) ........295 description ..........543 Pitch presentation ............. General page ..........568 modes ............. 302 Pitch OffsetPitch Offset placing the menu on the left side of the presentation Stabilization function ........483 ..............
Page 722 Simrad ST90 procedure (continued) procedure (continued) adjusting the radius of the search area ....52 Inspecting and cleaning the Processor Unit ..251 adjusting the sonar range ........ 52 Inspecting and cleaning the transceiver ....252 Adjusting the stabilization offsets for the external Inspecting and cleaning the Transceiver Unit ..252...
Page 723 Reference Manual procedure (continued) procedures (continued) Selecting Inactive mode ........43 controlling the gain and range settings ....49 selecting measurement units ......123 maintenance ..........152 Selecting Normal mode ........40 setting up presentation modes and views ... 104 selecting replay operating mode ....
Page 724 Simrad ST90 Push (Rotary Switch Functions) read-out (continued) Operating Panel page (Mk3) ......639 water depth (top bar) ........293 Reception Test Transducer page ......... 590 Record ............qualifications description ..........283 preventive maintenance personnel ....246 Record Processed ..........function ........... 457 Recording processed data ........92...
Page 725 Reference Manual Remove (continued) Rotary Switch Functions (Rotate) (continued) Replay File dialog box ........522 Operating Panel page (Mk3) ......639 Sensor Installation page ........ 607 Rotary Switch Options Remove Gear Symbol Operating Panel page (Mk2) ......633 shortcut menus .......... 430 Rotate (Rotary Switch Functions) Remove Trawl Symbol Operating Panel page (Mk3) ......
Page 726 Simrad ST90 Saved Settings selecting ............User Settings dialog box ........ 436 cursor information ........105 saving information, top bar ........116 current user settings ........129 manual track information ......105 Selecting where to save the screen captures ..99 marker information ........105 Scattered measurement units ........123...
Page 727 Reference Manual Set Priority Marker Single Ping shortcut menus .......... 429 Transmission Mode function ......452 setting up ............Size Distribution ..........communication ports ........162 information pane ........377 Operating Panel ........211, 215 page ............667 setting up interface ..........Size Distribution information pane ......
Page 728 Simrad ST90 speed (continued) Synchronization Mode (continued) read-out (top bar) ........292 Slave ............627 Speed Stand-alone ..........627 General page ..........568 Synchronization page ........627 Units page ..........630 Synchronization page ........... speed log ............description ..........626 interfacing ..........166 Synchronization Port setting up interface ........
Page 729 Reference Manual Temperature (continued) top bar (continued) General page ..........568 navigational information (read-out) ....290 Units page ..........630 Normalize ..........297 Water Column page ........582 operating system functions ......297 Temperature and salinity layers ....... overview ..........278 description ..........686 pitch (read-out) ..........
Page 730 Simrad ST90 transceiver boards (continued) transmitting (continued) checking status ........... 228 Transmitting single pings ......... 44 Transceiver On/Off ..........Transmitting with fixed-time intervals ....45 dialog box ..........543 Transparency ............. Transceiver On/Off dialog box ......... adjusting ..........120 description ..........543 function ...........
Page 731 Reference Manual user settings (continued) vessel coordinate system (continued) put to use ..........130 alternative origin .........683 renaming ..........131 description ..........683 retrieve ............ 130 origin ............683 save ............129 vessel coordinate system alternative origin ....User Settings ............. description ..........683 Operating Panel page (Mk2) ......
Page 732 Simrad ST90 Weak AGC (Automatic Gain Control) ......510 Z Offset Noise Filter function ........515 MRU (Motion Reference Unit) page ....623 RCG (Reverberation Controlled Gain) function ..512 Ship page ..........620 weak transducer elements ........Transducer page ......... 622 detecting ..........
Page 734 ©2024 Kongsberg Discovery ISBN 978-82-8066-211-8...
Page 736 Kongsberg Discovery AS / Simrad Telephone: +47 33 03 40 00 Strandpromenaden 50 P.O.Box 111 Horten E-mail sales: simrad.sales@simrad.com Norway E-mail support: simrad.support@simrad.com www.kongsberg.com/simrad...