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Operator manual Simrad SU90 Fish finding sonar www.simrad.com T E C H N O L O G Y F O R S U S T A I N A B L E F I S H E R I E S...
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Operator manual Software version 2.1.8 This manual provides you with the basic information required to operate the Simrad SU90 Sonar. For a more detailed description of the operation and functionality, including menus and all parameters, refer to the Simrad SU90 Reference manual.
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If you require maintenance or repair, contact your local dealer. You can also contact us using the following address: simrad.support@simrad.com. If you need information about our other products, visit http: //www.simrad.com. On this website you will also find a list of our dealers and distributors. Kongsberg Maritime AS www.kongsberg.com...
When the SU90 is not used................12 When you are docking your vessel ............... 12 If something breaks down................12 When you switch off the SU90 ..............12 Manual operation of the hull unit ..............13 Transducer handling..................13 System description ....................14 Key features......................15...
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Vertical Ring ....................59 Visual aids (cosmetics): Depth Dividers, Minute Markers and Bow Marker ....................... 60 Online help ......................60 Preparing the SU90 for vessel docking ..............62 OPERATIONAL PROCEDURES .......... 63 Making menu choices.....................64 Hiding (and retrieving) the menu ..............64 Simplifying the menu system with fewer buttons ..........
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Operator manual Loading a previously stored user setting ............66 Renaming a user setting ................66 Deleting a user setting ................. 67 Loading the factory settings................. 67 Presentation mode procedures................67 Selecting presentation mode ................ 68 Defining the function of the 'Mode' buttons on the Operating Panel ....68 Sorting the presentation modes ..............
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Simrad SU90 Starting the built-in simulator ..............94 Stopping the built-in simulator to restart normal operation......94 Setting up the simulator in manual mode ............95 Installation of optional functionality ..............96 Opening the 'Install Options' parameter dialog ..........96 Adding optional functionality ..............96 Hull Unit procedures ....................98...
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Operator manual Cavitation....................133 Reverberation ................... 134 Blocking ....................134 Check the noise yourself! ................134 Layers and deflections ..................135 Temperature and salinity layers..............135 Deflections ....................136 Acoustic noise ......................137 Contributing noise factors ................. 137 Self noise ....................139 Ambient noise ..................
Installed on your Simrad SU90 you will find a comprehensive on-line help system. You may not find it in your language, but everything you can read in the Simrad SU90 Reference manual can also be found in the context sensitive on-line help.
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Simrad SU90 Simrad ® , SIMRAD ® and the Simrad ® logo are either registered trademarks, or trademarks of Kongsberg Maritime AS in Norway and other countries. 381291/B...
• Manual operation of the hull unit on page 13 • Transducer handling on page 13 Before you switch on the SU90 Before you power up the SU90, make sure that you have sufficient water depth to lower the transducer! Related topics •...
When the SU90 is not used To protect the SU90 when it is not in use, we strongly advice you to hoist the transducer, even though you may not switch off the power. In narrow or shallow waters this is very important, since you may - in worst case - run the transducer into the bottom.
Simrad SU90 Manual operation of the hull unit In the event of improper operation, the powerful electric motor may cause serious damage to the equipment and/or injury to personnel. Therefore, before you start the manual operation, read carefully through the relevant procedure(s).
SU90 a very powerful and high resolution low frequency sonar. The narrow beam makes the SU90 even more ideal for searching fish close to the bottom or close to the surface at long ranges. It also provides a far better vertical view with less “bottom climbing”...
Key features The Simrad SU90 is the ultimate long range, low frequency fish finding sonar. We made no compromises during the design of this sonar. If high performance is your only criteria when choosing a sonar, this is your natural choice.
Simrad SU90 System diagram A standard SU90 system diagram is provided. Interface capabilities, uninterrupted power supplies and power cables are not shown. Processor Unit SIMRAD Colour display MENU Operating Panel Operating Panel Power Supply SIMRAD SU90 Transceiver Unit SIMRAD Motor Control Unit...
• Transducer on page 19 Display A commercial display is used with the Simrad SU90 system. Note that the display is not a standard part of the SU90 delivery. Processor Unit The Processor Unit is a marine computer based on the Microsoft Windows ®...
If standard commercial PC loudspeakers are used, these are normally powered by a separate power supply. Transceiver Unit The SU90 Transceiver Unit is located in the sonar room, close to the Hull Unit. The transceiver performs the transmission and reception control of the 384 transmitters and 384 receiver channels.
Simrad SU90 The transducer can also be lowered to any selected middle position. In case of voltage failure, the transducer can be raised or lowered manually by means of a hand crank. The sensor for the electronic stabilisation of the sonar beams is housed in the Motor Control Unit, which is mounted on the Hull Unit.
Simrad SU90 Key functionality The Simrad SU90 offers certain key functions. The basic principles of the Simrad SU90 are unique because of the 384 separate transmitter and receiver channels with their transducer elements spread around on the cylindrical transducer. The transmission, reception and data processing are under computer control, and the powerful capabilities of the sonar are the results of sophisticated digital signal processing software and state of the art hardware.
The default sensor for the beam stabilizer function is located inside the Motor Control Unit. You can also connect an external motion sensor to the SU90. This will provide a more accurate compensation. Reception filters and functionality A great effort has been made to reduce unwanted noise to get a clean and stable echo presentation.
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Simrad SU90 In addition to giving a clean and stable echo presentation, this will normally also increase the sonar's detection range. The advantage of the FM correlation filter is that it retains the high resolution in range with long pulse lengths and high energy, and that it is not sensitive to moving targets.
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• What is RCG? on page 131 Ping-to-ping filter The Simrad SU90 is equipped with a ping-to-ping filter (PP Filter) to provide a clean and steady presentation by reducing the interference and noise. This filter compares the echoes from a selected amount of transmissions (pings), and an echo has to be present in the selected amount of pings in order to be presented on the display.
Simrad SU90 Support information If you need technical support for your Simrad SU90 you must contact your local dealer, or one of our support departments. A list of all our dealers is provided on http://www.simrad.com. Norway (Main office) • : Kongsberg Maritime AS / Simrad Company name •...
Getting started Getting started This chapter describes how to get started with the basic operation of the SU90. It contains a brief overview of the basic system operation and procedures. If you are a first time user, we recommend that you read through this chapter while operating the SU90 so that you can familiarize yourself with the menus, dialog boxes and display presentations.
: Manual control of beam training, start automatic search and tracking Train programs. Power on/off procedures These procedures explain how to switch the SU90 system on and off. The operation is made using the buttons on the Operating Panel. Topics • Powering up the SU90 on page 26 •...
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Getting started Note Make sure that you have sufficient water below the hull before you lower the SU90 transducer! Procedure Press the button on the display. Power Press the button on the Operating Panel, and keep it depressed for Power approximately two seconds.
If you forget to hoist the transducer before you press the button to switch off Power the SU90, the transducer is hoisted automatically. You must then wait some extra time before the sonar switches off. If the sonar is switched off uncontrolled with the transducer in its lowered position, the transducer will normally be hoisted automatically after approximately one minute.
SONAR OPERA TING PANEL Procedure Use the trackball (A) on the Operating Panel. Observe that the cursor moves on the SU90 display, and that it changes its form depending on its location. Observe the location of the button (B).
Simrad SU90 Observe that a dedicated shortcut menu opens. View Which shortcut menu that opens depends on the current presentation mode, and in which view your cursor is located when you press the button. View You can open the same...
Getting started Position the cursor on the centre of the menu button (C). Observe that the shape of the cursor changes to a “menu” symbol. This means that the applicable parameter dialog will open when you press the button. The Select dialog appears in the lower part of the menu field, and offers an overview of the available options.
Select Observe that the parameter dialog closes. In the Simrad SU90, all parameters are stored automatically. This function will cause the SU90 to remember all the selected parameter settings, even when it is switched off. Understanding the menu structure Purpose The menu contains several different buttons, tabs and parameter dialogs.
The purpose of this procedure is to familiarize yourself with the menu and echo presentation area on the SU90. Procedure Once the SU90 is up and running, observe the layout of the display presentation: (CD015008A) On the right side, observe the menu system (A).
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Simrad SU90 Observe that the menu reappears on the selected side (A), and that the remaining echo presentation area is not re-scaled. (CD015008C) Move the cursor towards the centre of the display, and observe that the temporary menu disappears. On the Operating Panel, press the...
Getting started Starting normal operation Once you have powered up the complete SU90 system, you are ready to start the actual operation. When started up, the SU90 will automatically apply its previous setup parameters. Observe these brief procedures to familiarize yourself with the basic operations with echo presentations and menu operations.
Click either side of the button to leaf through the options, or the middle of the button to open the parameter dialog. Changing the presentation colours Purpose The echo presentation on your SU90 sonar can be provided using many colours and different palettes to suit your preferences. Procedure Click the tab to open the menu.
Horizontal Range This parameter is used to control the range of the SU90, that is the distance from the vessel to the outmost edge of the sonar beam. Click either side of the button to leaf through the options, or the middle of the button to open the parameter dialog.
Vertical Gain This parameter is used to control the range of the SU90, that is the distance from the vessel to the outmost edge of the sonar beam. Click either side of the button to leaf through the options, or the middle of the button to open the parameter dialog.
Getting started Alternative method: Vertical gain Click the tab to open the menu. Vertical On the menu, click Vertical Gain parameter is used to control the receiver gain, that is how much Gain amplification that is used on the received echoes. Click either side of the button to leaf through the options, or the middle of the button to open the parameter dialog.
Simrad SU90 Operational frequency, vertical Click the tab to open the menu. Vertical On the menu, click Vertical Frequency This parameter is used to control the transmitter and receiver operational frequency. Click either side of the button to leaf through the options, or the middle of the button to open the parameter dialog.
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150 meters), we recommend that you reduce or switch off the AGC. This is because the AGC filter misinterprets the school for noise. Keep in mind that the filters in the SU90 are implemented in “series”. The gain compensations are made before the AGC. For this reason, your gain setting will always have an effect on the AGC.
Simrad SU90 Adjusting the Reverberation Controlled Gain (RCG) Purpose The Reverberation Controlled Gain (RCG) regulates the receiver gain individually for each of the receiving beams. If you select weak or medium filter strength, signals with small variations, like propeller noise, surface and bottom reverberations will be removed, while signals with fast variations, like target echoes or bottom echoes, will not be removed.
10 log R 5 log R Keep in mind that the filters in the SU90 are implemented in “series”. The TVG compensations are made before the AGC (Automatic Gain Control). For this reason, your TVG setting will always have an effect on the AGC.
Simrad SU90 Typical parameter settings The SU90 offers numerous parameter settings. Choosing the correct settings for each individual type of fisheries and species can be a challenge. In the following, we suggest a selection of typical parameter settings. We acknowledge that sea and weather conditions, vessel independent properties and personal preferences play a vital part when you “tune”...
Getting started Parameter Horizontal beam Vertical beam Noise Filter Medium PP Filter Medium Medium Pollock and saithe Parameter Horizontal beam Vertical beam Presentation mode Bow Up / 270 Vertical Gain Pulse form FM Short FM Short Beam Normal Frequency 28 kHz 28 kHz 10 log R 10 log R...
Weak PP Filter Weak Weak Echo presentations The information provided by the SU90 is presented in individual views. Basically, three different views are used. • Omni presentation (horizontal) • Vertical slice presentation • Catch data presentation The size of each view can easily be adjusted.
Getting started When the Omni beam is tilted, the total beam picture can be compared with folding an umbrella, which means that all beams in 360 degrees around the vessel have the same tilt angle. In several presentation modes, the omni presentation is combined with a vertical slice, and/or with a catch data presentation.
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Simrad SU90 In this mode, the vessel is placed at the centre of the omni presentation with the ship's head pointing straight up. The compass rose on the outer presentation circle will move to reflect the heading, observe the N, E, S and W characters to identify the compass bearings.
Important Note that this view is by default located on the right hand side of the SU90 presentation, and often hidden behind the menu. In order to see the view, press the button on the Operating panel, or click the...
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Simrad SU90 This is the same screen capture one more time, but this time with focus on the vertical view in the bottom right corner. Note that the vertical view is made along the white audio line in the omni presentation.
Important Note that this view is by default located on the right hand side of the SU90 presentation, and often hidden behind the menu. In order to see the view, press the button on the Operating panel, or click the...
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It initiates the Net state catch sequence, in which the SU90 can be used in a “tactical mode”. In this mode, the purse seine is indicated as a yellow circle on the omni presentation.
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With a trawl, the horizontal line is used as a reflect the course of the trawl. If you have an ITI system connected to the SU90, a trawl symbol will be shown to indicate the position of the trawl opening relative to the target. You can then easily manoeuvre your vessel to obtain the best possible catch.
• Visual aids (cosmetics): Depth Dividers, Minute Markers and Bow Marker on page 60 Investigating the common information on the display Purpose Observe this procedure to familiarize yourself with the common information provided at the top of the SU90 presentation. Procedure Locate the button on the top of each menu.
Cosmetics Cosmetics This menu allows you to control the amount of support information on the SU90 presentation. Click the button to activate the variable range marker. A red dotted circle is shown on the sonar presentation. The range from the center (vessel) is indicated in the lower right quadrant of the circle.
Simrad SU90 Moving the bearing (audio) line Purpose The bearing line is shown as a while line starting at the center of the omni presentation (vessel) and stretching out to the outer circle. The bearing line serves several important purposes.
Click the button to open the Cosmetics Cosmetics menu. This menu allows you to control the amount of support information on the SU90 presentation. Observe a range of parameters available to provide you with additional information on the sonar picture. 381291/B...
Simrad SU90 Visual aids (cosmetics): Bearing Card, Wind Marker and Distance Rings Bearing Card Bearing Card shows the current bearing relative to the vessel. The markers are shown as short white lines for every 10th degree along the outer circle of the sonar view.
Getting started Visual aids (cosmetics): Variable Range Marker, Compass Card and Vertical Ring Variable Range Marker (VRM) Variable Range Marker (VRM) consists of an adjustable range ring with range read-out. It can be used for any type of distance marking relative to the vessel.
Depth Dividers (G), Minute Markers (H) and Bow Marker Online help Purpose The Simrad SU90 sonar is equipped with a comprehensive context sensitive online help system. Help is provided in two levels; • On-line and •...
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Free This will open the complete interactive manual. It contains the same information as the printed SU90 Reference Manual, but the information is made available using the menu on the left hand side and interactive links throughout the document. Click in the bottom left corner to return to the small on-line parameter dialog.
Off, or disconnect the mains power, whenever the vessel is in dry dock. Related topics • Powering off the SU90 on page 28 Procedure Ensure that the transducer shaft is fully retracted. Power off the sonar system. Disconnect the mains power to the Processor Unit.
This chapter contains several operational procedures explaining how you can put your SU90 to use. Menu navigation employed by Simrad SU90 is similar to the other Simrad applications which follow the user interface standards developed by Simrad. The main menu is normally located at the right side of the screen, and by means of dedicated icons at the bottom of the main menu, you can open the relevant submenus or dialog boxes.
Simrad SU90 Making menu choices This section provides basic procedures for menu handling. Topics • Hiding (and retrieving) the menu on page 64 • Simplifying the menu system with fewer buttons on page 64 Hiding (and retrieving) the menu Purpose The menu is normally located on the right hand side of the display presentation, but if you don't need it, you can easily remove it.
Operational procedures Saving and retrieving user settings The SU90 allows you to save user settings. You can save as many settings as you like, the number is only limited by the size of your hard disk. All parameters you have chosen to set up the SU90 to suit your preferences are saved.
Simrad SU90 Loading a previously stored user setting Purpose Once a user setting has been saved, you can recall it and apply the settings. Procedure Click the tab to open the menu. Setup Click the button to open the parameter dialog.
Presentation mode procedures This section explains how to choose presentation modes, and how to set up the Mode buttons on the SU90 Operating Panel. Topics • Selecting presentation mode on page 68 • Defining the function of the 'Mode' buttons on the Operating Panel on page 68 •...
Defining the function of the 'Mode' buttons on the Operating Panel Purpose buttons on your SU90 Operating Panel can either be used to select presentation Mode mode, or user settings. You can switch between these options. Procedure...
Sorting the presentation modes Purpose Your SU90 sonar provides you with a selection of presentation modes. This list of modes can be sorted to suit your preferences. The top four modes on your list can be chosen by pressing the four buttons on the Operating Panel.
Adjusting the vertical and horizontal gain Purpose Gain Gain The range of your SU90 sonar can be set individually for the horizontal and vertical presentations. • The gain applied to the horizontal presentation modes can be changed using the Operating Panel or the button on the menu.
Operational procedures Alternative method: Horizontal gain Click the tab to open the menu. Horizontal On the menu, click Horizontal Gain parameter is used to control the receiver gain, that is how much Gain amplification that is used on the received echoes. Click either side of the button to leaf through the options, or the middle of the button to open the parameter dialog.
150 meters), we recommend that you reduce or switch off the AGC. This is because the AGC filter misinterprets the school for noise. Keep in mind that the filters in the SU90 are implemented in “series”. The gain compensations are made before the AGC. For this reason, your gain setting will always have an effect on the AGC.
Adjusting the Time Variable Gain (TVG) Purpose parameter allows you to choose the Time Variable Gain setting in the SU90. This function will automatically adjust the gain in the SU90 to compensate for geometric spreading and absorption. Note When this parameter is changed on a horizontal menu, the chosen setting is only put to use on the horizontal sonar presentation.
10 log R 5 log R Keep in mind that the filters in the SU90 are implemented in “series”. The TVG compensations are made before the AGC (Automatic Gain Control). For this reason, your TVG setting will always have an effect on the AGC.
Operational procedures Removing unwanted bottom echoes Purpose parameter dialog provides a digital filter to decrease the influence of Bottom Filter the bottom echoes when searching for targets close to the bottom. Note When this parameter is changed on a horizontal menu, the chosen setting is only put to use on the horizontal sonar presentation.
Simrad SU90 Using markers and symbols This section explains how to add, investigate and delete symbols and markers on the SU90 sonar presentation. Topics • Adding 'Target' and 'Circle' markers to the sonar presentation on page 76 • Adding an 'Own ship' symbol to the sonar presentation on page 77 •...
This is a useful aid in providing an overview of the trawl operation. Trawl data can be set manually using the menu or automatically by interfacing a Simrad FS trawl sonar or Simrad ITI trawl monitoring system with the sonar.
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Simrad SU90 In the manual mode the trawl symbol will be displayed with the selected size, depth and distance. When the FS70, FS900 or FS3000 trawl sonar is connected, the trawl symbol will automatically be displayed with the correct depth in the vertical modes. When the ITI trawl system is connected, the trawl symbol will be displayed with the correct distance, bearing and depth.
Operational procedures Investigating marker and symbol information Purpose This procedure explains how you can retrieve information about your markers. Procedure Click the tab to open the menu. Objects Observe that all the current objects (markers and symbols) are listed. • The menu is shown in all presentation Objects modes, and displays the range (R), bearing (B)
Delete Saving and retrieving screen captures This section explains how to store and recall sonar images on the SU90. Topics • Saving sonar images on the computer hard disk on page 80 • Recalling sonar images to view them on page 81 •...
Operational procedures Click the button to choose recording mode. Store mode Click the left side of the button to scroll down the list of options. Click Store mode the middle of the button to open the parameter dialogue for direct access to the requested setting, or click the right side of the button to scroll up the list of options.
Simrad SU90 Preparing to recall one or more images Procedure Click the tab to open the menu. Setup Click the button to open the menu. Store/Recall Store/Recall Observe the list of images in the menu. Store/Recall Recalling a single image...
Operational procedures Procedure Click the tab to open the menu. Setup Click the button to open the menu. Store/Recall Store/Recall Observe the list of images in the menu. There are two lists, one for Store/Recall temporary files, and one for permanent. Click one of the images in the field to select it.
Simrad SU90 You are also permitted to change the file name on images in the field. Temporary files However, if you wish to transfer the chosen image to the field afterwards, Permanent files you will find that the new file name is changed by the transfer process.
Copying sonar images to a USB memory device Purpose The SU90 Processor Unit is provided with several USB interface ports. These are located on the rear side of the cabinet, and on some models on the front panel as well. Observe the following procedure to copy selected sonar images over to a USB memory stick.
Simrad SU90 Topics • Starting the horizontal search program on page 86 • Starting the vertical search program on page 86 • Enabling position track on page 87 • Enabling target track on page 87 • Adding a target tracking line on page 88...
Operational procedures Observe that the centre of the vertical search sector is adjusted accordingly. To exit the search program, press the button. Manual Enabling position track Purpose Position Observe this procedure to initiate a position track. Track Description A geographically fixed circle will appear on the display, and its position will automatically be tracked by the system with respect to the bearing and tilt angle.
Simrad SU90 Adding a target tracking line Purpose Observe this procedure to add a tracking line to a tracked target to indicate its movement history. Procedure Choose an presentation mode with a horizontal presentation. Place the cursor in the horizontal presentation.
Operational procedures Exporting RAW data The SU90 can export raw data to a file on the Processor Unit harddisk or on any other storage device connected to the computer. Topics • Main procedure on page 89 • Adding the software license for raw data export on page 89 •...
Defining the target folder for raw data export Purpose This procedure explains how to define the target folder for the raw data exported by the SU90 Processor Unit. Important This procedure assumes that you are familiar with the Microsoft ®...
Note Raw data files will normally become very large. If you wish to record large amounts of SU90 raw data, make sure that you have enough space on your hard disk. The hard disk capacity on the Processor Unit is limited.
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Simrad SU90 Opening the Installation menu Purpose This procedure explains how to open the menu on the SU90 Processor Unit. Installation Procedure Click the tab on the Setup right hand side to open the menu. Setup Click the button to open the menu.
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Operational procedures Click the button. Installation Menu Observe that the installation menu bar is shown on the top of the screen. Click Options →Install options Observe that the parameter dialog opens. Install Options Related topics • Adding optional functionality on page 96 381291/B...
Simrad SU90 Using the built-in simulator The Simrad SU90 supports a built-in simulator. It is a special software application designed to simulate sonar echoes. The purpose of the simulator is to enable training and troubleshooting even when the vessel is not sailing.
Operational procedures Procedure On the menu, click to stop the simulation. Installation Simulation →Modes →Off On the menu, click System test button to Installation Menu close the top Installation Menu Restart the Transceiver Unit. On the menu, click the button. Setup Test On the...
Optional functionality may be added to the SU90. All options are pre-programmed into the standard sonar version. When ordering a permanent option installation, a code word will be released from Simrad. For installation of options, observe the following procedures. Topics •...
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Operational procedures Type the code word on the on-screen keyboard. Check that the 32 characters are entered correctly into the text field. Click the button. Apply License String Close the parameter dialog. Restart the sonar Verify that the option is available for use. Related topics •...
Simrad SU90 Hull Unit procedures In the event of a failure in the normal Location of S301, S302, K301, K302, L1 hoist/lower functionality controlled and L2 from the SU90 Operating Panel, or for maintenance purposes, the transducer HOIST STOP REMOTE LOWER...
Off, or disconnect the mains power, whenever the vessel is in dry dock. Related topics • Powering off the SU90 on page 28 Procedure Ensure that the transducer shaft is fully retracted. Power off the sonar system. Disconnect the mains power to the Processor Unit.
Simrad SU90 Lower the transducer from the sonar room using hoist/lower switch S302 Purpose Location of S302 in the Motor Control Unit If both the 3-phase voltage for the hoisting motor and the +24 Vdc from the internal power supply are available (indicators...
Operational procedures Hoist the transducer from the sonar room using hoist/lower switch S302 Purpose Location of S302 in the Motor Control Unit If both the 3-phase voltage for the hoisting motor and the +24 Vdc from the internal power supply are available (indicators HOIST STOP REMOTE...
Simrad SU90 Lowering and hoisting the transducer manually using the hand crank Purpose Location of S301 in the Motor Control Unit Important When not in use, the hand crank must HOIST STOP REMOTE LOWER always be placed inside the Motor Control Unit.
Operational procedures Emergency lowering and hoisting using the K301 and K302 contactors Purpose Location of S301, S302, K301, K302 and If the normal hoist/lower operation does not work, even though the 3–phase voltage for the Motor Control unit is HOIST STOP REMOTE LOWER...
Simrad SU90 Presentation modes The SU90 sonar provides you with several different presentation modes. These have been created to cover all your operational needs for various types of fishing and fishing gear. 'Bow up' presentation mode description When Bow up mode is selected, the vessel symbol is stationary on the screen with the bow pointing upwards.
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Presentation modes The bearing of the left vertical presentation is indicated by the white audio line in the horizontal presentation, while the bearing of the right vertical presentation is indicated by the yellow-dashed line. All borders between the different views may be moved to any position by means the trackball.
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Simrad SU90 'Dual 1' presentation mode description The Dual 1 mode is a kind of “two sonars in one” operation, where each presentation is updated for every second transmission. All settings can be set individually for each of the two presentations. This makes the dual mode especially useful for optimizing settings by directly comparing the two presentations.
Operating Panel Operating Panel This chapter describes the Simrad SU90 Operating Panel. The frequently used functions are directly accessible by the designated control buttons on the Operating Panel, and may enter operational commands directly. The buttons are grouped in fields according to their purpose. Most sonar functions are also accessible...
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Simrad SU90 Symbol . The two markers will be placed at the cursor's location Circle marker Gear symbol when you press the button. The produces a square symbol on the screen Own ship symbol at the vessel’s current location when the button is pressed, while the Gear symbol used to deploy a seine or trawl symbol.
Menu system Menu system The Simrad SU90 sonar is equipped with an extensive menu system, and you will use this to choose parameters for the various modes and functions. The chapter gives you a short description of each menu choice.
Simrad SU90 Active menus The active menus are those relevant for the different presentation modes. The menus are shown with vertical selector tabs on the right hand side, and each menu can easily be selected using the trackball and the button on the Operating Panel.
The pulse forms can either be CW (Continuous Wave) with different pulse lengths, or FM (Frequency Modulation) with different pulse lengths and a continuous frequency sweep. TX Power parameter dialog is used to select the output power from the SU90 TX Power transmitters. Beam...
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Simrad SU90 Ping Sector parameter is used to select the type of search sector the SU90 shall Sector use; Omni or Sector Use Omni to transmit in 360 degrees, or Sector to transmit a single beam Frequency This parameter is used to control the transmitter and receiver operational frequency.
The pulse forms can either be CW (Continuous Wave) with different pulse lengths, or FM (Frequency Modulation) with different pulse lengths and a continuous frequency sweep. TX Power parameter dialog is used to select the output power from the SU90 TX Power transmitters. Frequency This parameter is used to control the transmitter and receiver operational frequency.
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Simrad SU90 parameter allows you to choose the Time Variable Gain setting in the SU90. This function will automatically adjust the gain in the SU90 to compensate for geometric spreading and absorption. This parameter controls the Automatic Gain Control. This function will automatically reduce the gain if you experience reverberation and noise, or increase it if the conditions permit it.
The pulse forms can either be CW (Continuous Wave) with different pulse lengths, or FM (Frequency Modulation) with different pulse lengths and a continuous frequency sweep. TX Power parameter dialog is used to select the output power from the SU90 TX Power transmitters. Frequency This parameter is used to control the transmitter and receiver operational frequency.
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Simrad SU90 parameter allows you to choose the Time Variable Gain setting in the SU90. This function will automatically adjust the gain in the SU90 to compensate for geometric spreading and absorption. This parameter controls the Automatic Gain Control. This function will automatically reduce the gain if you experience reverberation and noise, or increase it if the conditions permit it.
Full Screen This is an on/off switch. When switched “on” the menu system is removed from the SU90 presentation. To recall the menu, move the cursor to the left side of the screen, observe that the menu appears, then switch “off”.
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Language Use this function to choose the language used on the menu buttons. Units This parameter allows you to choose the measurement units used by the SU90. Cosmetics Click to access the menu, which allows you to control the amount of Cosmetics support information on the SU90 presentation.
When “on”, the position is calculated based on the current speed and the input from the gyro. Stabilizer This is an “on/off” switch. When the stabilizer function is active, the SU90 will automatically adjust the presentation to compensate for the ship's movements in the sea.
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Fish alarm This function makes it possible to set up the SU90 to warn you when a school of fish are detected inside a selected search sector. The selected sector is shown with white dashed lines in the horizontal presentation.
Menu system Objects menu menu is shown in all display modes, and Objects displays the Range (R), Bearing (B) and Depth (D) to all selected objects. The identifying abbreviations for the different objects are: • AT: Automatic Target Track marker •...
Display menu provides access to various parameters controlling the appearance of Cosmetics the SU90 presentation. The majority of the buttons are thus provided as on/off buttons to enable or disable the relevant visual elements. Store/Recall menu menu is activated by the button on the menu.
Menu system Parameters Store This is the “record” button to start the storage sequence. Store Mode This dialog allows you to choose what kind of images you wish to save; either single display pictures, or a sequence of pictures from multiple pings. Recall This is the “playback”...
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Simrad SU90 This menu provides several sensor measurements and test functions for operational and functional tests. Note that tests are designed only to be carried out by qualified service engineers. From this menu you can also access the configuration. Message Bar...
Menu system TRU ON/Off This button opens the dialog. TRU On/Off The purpose of the dialog box is to monitor the power on/off sequence. TRU On/Off The dialog box can also be used during troubleshooting. About parameter dialog is only used to provide information about the current About software version.
Simrad SU90 Basic sonar theory This chapter explains some of the basic theory related to settings, error sources and noise conditions. Topics • Parameters on page 127 • Noise and reverberation on page 133 • Layers and deflections on page 135 •...
The most important interpretation is however left to you, and it may often be difficult to distinguish the echoes and identify the targets. In order to help you with this, the SU90 sonar provides numerous advanced filter and gain functions. You can also tilt the sonar beam vertically in order to achieve an optimum result, and you can use the vertical slice to view “across”...
10 log R 5 log R Keep in mind that the filters in the SU90 are implemented in “series”. The TVG compensations are made before the AGC (Automatic Gain Control). For this reason, your TVG setting will always have an effect on the AGC.
150 meters), we recommend that you reduce or switch off the AGC. This is because the AGC filter misinterprets the school for noise. Keep in mind that the filters in the SU90 are implemented in “series”. The gain compensations are made before the AGC. For this reason, your gain setting will always have an effect on the AGC.
This will make it easier to distinguish the various echoes, and the reverberation will be reduced. The default setting on the SU90 sonar is . In this transmission mode, the sonar FM Auto will automatically choose the optimal pulse length for the current range.
Settings “6” and “7” are also intended for schools, while ”8” and “9” can be used on scattered fish. These settings use alternative algorithms. About sectors The SU90 sonar can transmit the sound in two shapes; Omni beam Sector 381291/B...
Simrad SU90 transmission means that the sound is transmitted in a full 360 degrees circle Omni around the vessel, while means that it is transmitted in a defined direction shaped Sector like a cone. The transmission will provide you with a longer range.
Basic sonar theory Noise and reverberation Every time you use the sonar the quality of your search operations will depend on numerous error sources caused by the natural environment and physical properties of your vessel. We distinguish between the two terms noise and reverberation. •...
Simrad SU90 When the bubbles collapse, they cause very strong local shock-waves in the water. These may be audible and can also damage the propeller blades. In addition to this, the cavitation will generate very strong reverberation, commonly seen as a red stripe of echoes behind the vessel.
Basic sonar theory Checking the acoustic noise This procedure provides a simple method to check the acoustic noise. Click the tab to open the menu. Setup Click the button to open the menu. Test System test Click the button, and select in the parameter dialog.
Simrad SU90 Temperature and salinity layers (CD015005F) If you transmit a sonar beam down towards a temperature or salinity layer (A), it may be reflected as indicated in the illustration. The school of fish (B) you thought you would see will not be visible at all.
It is therefore important that we keep this noise level as low as possible in order to obtain long range and dependable interpretation. Even with the advanced noise filtering offered by the SU90, we must address the noise challenge during the planning and preparations for the system installation.
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Simrad SU90 • the signal-to-noise ratio 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 the user to make the right filter settings during operation.
Basic sonar theory • Reverberation Self noise There are many sources of self noise. • Machinery: Main engine, Auxiliary engines, Gears, Pumps, Blowers, Refrigerator systems, etc. • Electric: Electric motors, Ground loops, etc • Propellers: Propeller blade properties, Cavitation, Shaft vibrations, Static discharges •...
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Simrad SU90 Flow noise Every object that moves through water Cavitation will disturb the medium, and it will cause friction in the water. The friction zone is called the flow boundary layer. The flow in this boundary layer may be laminar or turbulent.
Basic sonar theory Rattle noises Rattle noise may be caused by loose objects in the vicinity of the transducer, like fixing bolts. The rattle may also come from loose objects inside the hull. Interference Interference from other hydroacoustic equipment on board the same vessel may be an annoying source of disturbance.
Note The information here must be considered as general advice. Each SU90 installation must be handled separately depending on the hull design and the other electrical and mechanical systems installed.
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Use shielded cables with correct grounding is necessary. Separate SU90 cables from other cables with heavy currents or transients. Use a supply voltage without disturbances like transients from the supply itself, or from other equipment fed by the same supply.
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Circle marker Basic description about, 76 Processor Unit, 17 add, 76 Beam about Click menu button, 111 Simrad SU90, 14 definition, 29, 31 Beam stabilization, 21 About Colour display Beam width menu button, 125 description, 17 theory, 130 on-line help, 60...
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Index Description delete, 67 amplifier, 18 familiarization Hand crank Hull Unit, 18 SU90, 11 hoisting and lowering Loudspeaker, 18 File transducer, 102 Operating panel, 107 Delete, 123 Handling rules Operating Panel, 17 Print, 123 transducer, 13 Operating Panel power Rename, 123...
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13 using hand crank, 102 print sonar images, 84 when docking, 12 using the Motor Control recall sonar images, 81 when the SU90 is not Unit, 100 rename sonar images, 83 used, 12 rename user setting, 66 Inspect Object...
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Procedure position Pitch access operating system track, 87 menu button, 124 desktop, 92 power off SU90, 28 Pitch stabilization, 21 add circle marker, 76 power on SU90, 27 Position add gear symbol, 77 print sonar images, 84 display read-out, 54...
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Simrad SU90 raw data export, 91 menu button, 119 lower and hoist using Status Test beam hand crank, 102 menu button, 112, 114, menu button, 124 lowering range, 18 116, 118, 120, 122 Test Config lowering using the stop menu button, 124...
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Index combination, 21 Vessel speed maximum, 18 Vessel symbol add, 77 Visual aids, 44, 54 VRM, 59 moving, 55 What is AGC, 128 beam width, 130 blocking, 134 cavitation, 133 gain, 130 omni transmission, 131 PP Filter, 129 pulse form, 129 pulse length, 129 RCG, 131 reverberation, 134...
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