Simrad SN90 Operator's Manual
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Simrad SN90 Operator's Manual

Simrad SN90 Operator's Manual

Purse seine and trawling sonar
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Operator Manual
Simrad SN90
Purse Seine and Trawling sonar
TECHNOLOGY FOR SUSTAINABLE FISHERIES
www.simrad.com

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  • Page 1 Operator Manual Simrad SN90 Purse Seine and Trawling sonar TECHNOLOGY FOR SUSTAINABLE FISHERIES www.simrad.com...
  • Page 3 SN90. Due to the nature of the descriptions and the level of detail provided by this manual, it is well suited for those who use the SN90 on a daily basis, and have access to expert users for advice.
  • Page 4 Support information 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 https: //www.simrad.com.

  • Page 5: Table Of Contents

    GETTING STARTED ..............21 Operating Panel description.....................22 Menu system ........................25 Starting normal operation ....................26 Turning on the SN90 for normal use ..............26 Getting to know the user interface .................27 Getting to know presentation modes and views .............30 Selecting Normal mode to start "pinging"..............34 Adjusting the radius of the search area ..............35...
  • Page 6 Selecting Normal mode to start "pinging"..............55 Selecting Replay mode ...................56 Selecting Inactive mode ..................57 Setting up the SN90 for maximum echo refresh rate ..........58 Transmitting single pings ..................59 Transmitting with fixed-time intervals ..............59 Adjusting the output power to match varying conditions ........60 Selecting the best operating frequency..............61...
  • Page 7 Defining settings related to user preferences and individual customizing.....102 Selecting menu language..................102 Hiding the menu system ..................103 Placing the menu on the left side of the SN90 presentation.........104 Selecting the information to appear on the top bar ..........104 Enabling Coordinated Universal Time (UTC) on the bottom bar ......105 Selecting which tooltips to appear in the user interface ........105...
  • Page 8 Setting up the interface for course gyro input ............139 Configuring the sensor interface................142 Setting up the input from a motion reference unit (MRU)........143 Setting up the SN90 in a synchronized system ............145 Setting up the SN90 in a synchronized system..............148 About synchronization ..................148 Synchronization modes ..................148...

  • Page 9: About This Manual

    Target audience This manual is intended for all regular users of the SN90. Due to the nature of the descriptions and the level of detail provided by this manual, it is well suited for those who use the SN90 on a daily basis, and have access to expert users for advice.

  • Page 10: Simrad Sn90

    Before you turn on the SN90, make sure that you have sufficient water depth to lower the transducer! Caution You must never turn on the SN90 when the ship is in dry dock. The transducer may be damaged if it transmits in open air. When the SN90 is not used When you do not use the SN90, turn off the entire system.
  • Page 11 If the transducer is lowered when you turn off the SN90, it is automatically retracted to its upper position. Note If you turn off the SN90 by means of the on/off switch on the Processor Unit you may damage the software and the interface settings used to communicate with external devices.
  • Page 12 Simrad SN90 Operator Manual • Do not use high-pressure water, sandblasting, metal tools or strong solvents to clean the transducer. • Do not step on the transducer cables. • Do not damage the transducer cables, and avoid exposure to sharp objects.

  • Page 13: System Description

    Simrad SN90 System description The Simrad SN90 is a directional high frequency fish finding sonar. Due to the high resolution and long range, the SN90 has proven to be a very efficient tool for both trawlers and purse seiners. Topics...

  • Page 14: Using Sn90 On Purse Seiners

    In purse seine operations, the large frequency bandwidth makes the SN90 ideal for both mackerel and tuna, and even for herring. 381295/B...

  • Page 15: Using Sn90 On Trawlers

    The physical installation angle of the transducer must be determined based on the depth in the vessel’s normal fishing waters. Even with a fixed installation angle, the SN90 will serve well in other waters too due to the swath and tilt functionality. Specifications and functionality The Simrad SN90 is a unique sonar, both in design and functionality.
  • Page 16 • They increase the range and resolution, and offer a vertical view with additional details and a clearer picture. • They make the SN90 even more ideal when you need to search for fish close to the sea bottom, or close to the surface, at long ranges.

  • Page 17: Key Features

    For purse seine applications, the transducer is mounted on the port or starboard side of the hull, facing the seine. The SN90 allows you to run alongside a school of fish and observe, and you can analyse the school without passing over it.
  • Page 18 Simrad SN90 Operator Manual • Cost efficient solution • HFM (Hyperbolic Frequency Modulation) transmissions (This pulse type is also known as "chirp".) • Large dynamic range • High definition • Stabilized beams • Easy operation • Store and recall sonar data •...

  • Page 19: System Diagram

    Simrad SN90 System diagram The system diagram identifies the main components of a basic SN90 system. Only the main connections between the units are shown. Detailed interface capabilities and power cables are not shown. A hull unit may be provided as an optional method to lower and hoist the transducer.

  • Page 20: General Safety Rules

    Safety is important. The safety precautions must be followed at all times during installation and maintenance work. WARNING The SN90 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 21 Telefax • http://www.simrad.fr Website • simrad.france@simrad.com E-mail address • : Kongsberg Underwater Technology Inc / Simrad Fisheries Company name • : 19210 33rd Ave W, Suite A, Lynnwood, WA 98036, USA Address • : +1 425 712 1136 Telephone •...
  • Page 22 Simrad SN90 Operator Manual Malaysia • : Kongsberg Maritime Malaysia Sdn. Bhd Company name • : Unit 27-5 Signature Offices, The Boulevard, Mid Val- Address ley City, Lingkaran Syed Putra, 59200 Kuala Lumpur, Malaysia • : +65 6411 7488 Telephone •...

  • Page 23: Getting Started

    Getting started Getting started Topics Operating Panel description, page 22 Menu system, page 25 Starting normal operation, page 26 Basic operating procedures, page 43 381295/B...

  • Page 24: Operating Panel Description

    • Before you turn on the SN90, make sure that you have sufficient water depth to lower the transducer! • You must never turn on the SN90 when the ship is in dry dock. The transducer may be damaged if it transmits in open air.
  • Page 25 Button Options assign one function to each button on the Operating Panel. : Press this button to make a copy of the current SN90 presentation. Screen Capture You can choose either a single screen capture or a sequence with multiple screen captures.
  • Page 26 Trackball Note The SN90 supports two different operating panels. These are referred to as "Mk1" and "Mk2". In this publication all descriptions and references are related to "Mk2". Before you can change the settings related to a view, you must click inside the view to activate it.

  • Page 27: Menu System

    To Menu retrieve the menu, select one more time. When the menu is hidden, it is temporarily Menu shown on the left or right side of the SN90 presentation if you move the cursor to that position. 381295/B...

  • Page 28: Starting Normal Operation

    Turning off the SN90, page 41 Turning on the SN90 for normal use In order to use the SN90, you must first turn it on. To turn on the SN90 use the Power button on the Operating Panel. The SN90 program starts automatically when the Processor Unit is turned on.

  • Page 29: Getting To Know The User Interface

    Main Operation The icon is flashing to indicate that even if the SN90 is turned on, "pinging" is disabled. The SN90 is in Normal mode, but is set to Off to prevent TX Power transmissions.
  • Page 30 Docking Views positions of the views, and change their sizes. A comprehensive menu system allows access to all SN90 functionality. The menu system is by default located on the right side of the SN90 presentation. Top bar Sonar views Menu system...
  • Page 31 Observe that small tooltips open to identify the various functions you can use. The SN90 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 32: Getting To Know Presentation Modes And Views

    Context The SN90 presents the echo data in different views. All information from each ping is shown in all the views simultaneously. Each view uses its individual transmit frequency, and you set up the different views with different operating parameters. The behaviour of the echoes in each view is controlled by your course and speed combined with the movements of the target(s).
  • Page 33 • Relevant information about a priority object can be found in the lower left corner of the view. The SN90 transmits in a swath with maximum horizontal opening angle 160°. By means of the function, you can change this opening angle to Horizontal Tx Sector 90, 120 or 160°.
  • Page 34 Simrad SN90 Operator Manual At the bottom of the SN90 presentation, select a suitable presentation mode, and activate the 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 tilt is drawn in the Vertical and Horizontal views as two dotted lines.
  • Page 35 Getting started At the bottom of the SN90 presentation, select a suitable presentation mode, and activate the Inspection view. The SN90 offers several inspection beams. Each Inspection view presents one inspection beam. Each inspection beam has an opening angle of 6x6° (frequency dependent).

  • Page 36: Selecting Normal Mode To Start "Pinging

    Related topics Starting normal operation, page 26 Selecting Normal mode to start "pinging" In order to transmit ("ping") you must set the SN90 to Normal operating mode. This is the default mode when the SN90 is turned on. Context function controls the operating mode of the SN90. You can set it to Operation Normal, Replay or Inactive.

  • Page 37: Adjusting The Radius Of The Search Area

    Adjusting the radius of the search area Some echoes are close, others are further away. It is often necessary to adjust the radius of the search area. On the SN90, this is referred to as range. Context setting defines how "far" you wish the SN90 to detect echoes. In other...

  • Page 38: Adjusting The Echo Sensitivity

    Weak echoes will be easier to see. However, since you also increase the acoustic noise in the reception, the SN90 presentations will also show this noise. Too much gain may therefore "distort" the presentation.
  • Page 39 Each switch can be assigned a function related to range, gain or bearing. Investigate the functionality provided on the page. This Operating Panel page is located in the dialog box. Installation Optionally: Observe the menu. Main Its default location is on the right side of the SN90 presentation. 381295/B...

  • Page 40: Changing The Vertical Angle Of The Sonar Beams

    Select the middle of the button to open it. If you have a keyboard connected to the SN90, type the requested value. Open the button and select if you wish to use the chosen setting in all Apply to all the views in the current presentation mode.
  • Page 41 Once again you can activate the RCG function to improve the reading. With the various beams provided by the SN90, it may be difficult to understand the concept. How do these beams "behave" in the water? By means of a graphic...

  • Page 42: Adjusting The Horizontal Direction Of The Sonar Beam

    Related topics Starting normal operation, page 26 Adjusting the horizontal direction of the sonar beam The Horizontal view in the SN90 presentation covers the entire 160° sector For the other views you must define the horizontal direction of the beam. Context In the Horizontal view the current bearing is shown with a continuous line pointing out from the vessel position.

  • Page 43: Turning Off The Sn90

    Power Off Power on the Operating Panel. You must never turn off the SN90 by means of the on/off switch on the Processor Unit. When you do not use the SN90, turn off the display and the Processor Unit.
  • Page 44 Power Off Power off Exit to Operating System Wait while the SN90 program closes and theTransceiver Unit is turned off. Turn off the display. If required, refer to the instructions provided by the display manufacturer. Related topics...

  • Page 45: Basic Operating Procedures

    Defining the ping (transmission) modes, page 48 Selecting the language displayed in the menus and dialog boxes You may prefer to use the SN90 with a user interface in your own language. function allows you to select the language to be used in the SN90 Language presentations, menus and dialog boxes.

  • Page 46: Selecting Operating Frequency For Minimum Noise

    Simrad SN90 Operator Manual Selecting operating frequency for minimum noise function is used to control the centre frequency of the acoustic Frequency transmissions (pings). The centre frequency can be changed from 70 to 120 kHz in steps of 1 kHz. All types of noise matter when you wish to find the best operating frequency.

  • Page 47: Hiding The Menu System When You Do Not Need It

    SN90 presentation. This gives you more space for echo information. Context The menu system is by default located on the right side of the SN90 presentation. The menus are organized in a tree structure with a main menu, a set of secondary menus, and several menu buttons.
  • Page 48 Simrad SN90 Operator Manual on the top bar allows you to make a copy of the current SN90 Screen Capture presentation. You can also use the button on the Operating Panel. Screen Capture Procedure Choosing screen capture mode: Open the menu.

  • Page 49: Saving The Current User Settings

    Getting started Saving the current user settings When you have spent some time working with the SN90, you are probably using specific settings that you know are efficient for your purpose. It is a good idea to save these settings.

  • Page 50: Defining The Ping (Transmission) Modes

    Select either side of the button to choose a value. Select the middle of the button to open it. If you have a keyboard connected to the SN90, type the requested value. You can also change the value by selecting - and holding - the middle of the button, and move the cursor sideways.

  • Page 51: Related Topics

    Getting started to Single Ping. Transmission Mode The SN90 transmits (pings) only when you select the symbol on the right side of the button. Related topics Basic operating procedures, page 43 381295/B...

  • Page 52: Operating Procedures

    Defining the user-selected features on the Operating Panel, page 119 Lowering and hoisting the transducer from the sonar room, page 125 Setting up the interfaces to peripheral devices, page 132 Setting up the SN90 in a synchronized system, page 148 381295/B...

  • Page 53: Getting Started

    Turning off the SN90, page 53 Turning on the SN90 In order to use the SN90, you must first turn it on. To turn on the SN90 use the Power button on the Operating Panel. The SN90 program starts automatically when the Processor Unit is turned on.

  • Page 54: Lowering And Hoisting The Transducer From The User Interface

    Main Operation The icon is flashing to indicate that even if the SN90 is turned on, "pinging" is disabled. The SN90 is in Normal mode, but is set to Off to prevent TX Power transmissions.

  • Page 55: Turning Off The Sn90

    Turning off the SN90, page 53 Turning off the SN90 When you do not use the SN90, turn off the entire system. To power down the three Power Supply Units and the Transceiver Unit, use the functionality in the SN90 program.
  • Page 56 Power Off Power off Exit to Operating System Wait while the SN90 program closes and theTransceiver Unit is turned off. Turn off the display. If required, refer to the instructions provided by the display manufacturer. Related topics...

  • Page 57: Choosing Operating Mode And Key Transmit Parameters

    Adjusting the output power to match varying conditions, page 60 Selecting the best operating frequency, page 61 Selecting Normal mode to start "pinging" In order to transmit ("ping") you must set the SN90 to Normal operating mode. This is the default mode when the SN90 is turned on. Context function controls the operating mode of the SN90.

  • Page 58: Selecting Replay Mode

    Selecting Replay mode, page 56 Selecting Inactive mode, page 57 Selecting Replay mode Replay mode allows you to play back previously recorded raw data. The SN90 can not operate normally while in Replay mode. Neither transmission nor reception take place. Context All playback is controlled by the replay bar.

  • Page 59: Selecting Inactive Mode

    Normal, Replay or Inactive. Note Note that Inactive operating mode is not the same as Passive mode. While Inactive mode stops both transmission and reception, Passive mode will still allow the SN90 to receive echoes. To select passive mode set to Normal and to Off.

  • Page 60: Setting Up The Sn90 For Maximum Echo Refresh Rate

    Selecting Normal mode to start "pinging", page 55 Selecting Replay mode, page 56 Setting up the SN90 for maximum echo refresh rate You can set up the SN90 to transmit (ping) as often as possible. This gives you the maximum refresh rate. Context...

  • Page 61: Transmitting Single Pings

    Operating procedures Transmitting single pings You can set up the SN90 to transmit a single ping only when you select the Transmission button. Mode Context to control how often the SN90 Transmission Mode shall transmit its energy into the water. For normal use, choose Maximum.

  • Page 62: Adjusting The Output Power To Match Varying Conditions

    Some of our users claim that reducing the output may be useful if you are looking for scattered fish. If you operate in the close vicinity of other vessels that are also using the SN90, interference may cause problems. Reducing the output power is not a practical way to deal with interference.

  • Page 63: Selecting The Best Operating Frequency

    We recommend that you do this test twice. First, do the test with all other hydroacoustic systems (echo sounders, ADCP, sonars) turned off. Second, do the test with normal operating conditions. This allows you to see how the other hydroacoustic systems affect the SN90 operation. Procedure On the...
  • Page 64 Simrad SN90 Operator Manual 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. Active Pulse Type Open the menu. Setup Select to open the dialog box.

  • Page 65: Controlling The Gain And Range Settings

    Weak echoes will be easier to see. However, since you also increase the acoustic noise in the reception, the SN90 presentations will also show this noise. Too much gain may therefore "distort" the presentation.
  • Page 66 Simrad SN90 Operator Manual reduces the minimum level, and this increases the sensitivity. Only echoes over the minimum level are shown in the echogram (C). Do not confuse this setting with the (Time Variable Gain) setting. Gain During normal operating conditions we recommend that you keep the gain between 15 and 30.

  • Page 67: Adjusting The Tvg (Time Variable Gain) Setting

    Controlling the gain and range settings, page 63 Adjusting the sonar range The sonar range setting defines how "far" you wish the SN90 to detect echoes: the distance from the vessel to the outer edge of the search area. Context setting defines how "far"...
  • Page 68 Installation Optionally: Observe the menu. Main Its default location is on the right side of the SN90 presentation. Select Range Make the necessary adjustment. The following methods can be used to adjust this setting: Select [+] or [-] to choose the requested setting.

  • Page 69: Adjusting The Intensity Of The Echo Presentations

    (Automatic Gain Control). The is applied Display Gain towards the end of the filter sequence in the SN90. This means that you can use if you are not completely satisfied with the results of the automatic gain Display Gain functionality.
  • Page 70 Once again you can activate the RCG function to improve the reading. With the various beams provided by the SN90, it may be difficult to understand the concept. How do these beams "behave" in the water? By means of a graphic...

  • Page 71: Adjusting The Bearing

    Related topics Controlling the gain and range settings, page 63 Adjusting the bearing The Horizontal view in the SN90 presentation covers the entire 160° sector For the other views you must define the horizontal direction of the beam. Context In the Horizontal view the current bearing is shown with a continuous line pointing out from the vessel position.
  • Page 72 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 SN90 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 73: Using The Markers And Tracking Features

    Choosing the fishing gear in use, page 77 Changing the fishing gear properties to match your own equipment, page 78 Starting a position track A position track permits the SN90 to automatically control the tilt and bearing based on the movements of your vessel. Context The position track locks on a position defined by its latitude, longitude and depth.

  • Page 74: Starting A Target Track

    Result The marker is shown as a small triangle with or without a short identifying label. Once an echo has bee provided with a marker in the SN90 presentation it is regarded as an object. Note If you change the tilt and bearing settings manually, the position track is disabled. If you create a new marker and give this priority, the position track is disabled.

  • Page 75: Placing A New Marker

    Operating procedures A new tracked object is automatically given priority status. The priority is identified with a "P". Only one single object can be given priority status. If you start tracking a new target the first target will loose its priority. The same applies if you give priority to another marker.

  • Page 76: Deleting A Marker

    Press on the Operating Panel. Marker Result Once an echo has bee provided with a marker in the SN90 presentation it is regarded as an object. The menu provides a list of all current objects. This includes Objects all types of objects including those classified as targets.

  • Page 77: Measuring The Size Of A School Relative To The Purse Seine

    Estimating the size of a school can sometimes be challenging. A single circle marker can be placed in the SN90 presentation. The circle is drawn with the same diameter as your purse. By means of the circle you can see the size of the school relative to your purse.
  • Page 78 The history line shows the movements of your vessel. Since the SN90 knows the length of your net, it places a second marker on this line when half the length has been spent. When the entire net has been spent, a third rectangular marker is shown.

  • Page 79: Choosing The Fishing Gear In Use

    Changing the fishing gear properties to match your own equipment, page 78 Choosing the fishing gear in use By defining the type of fishing gear you are using, the SN90 may provide more accurate visual presentations. The function allows you to define the size of your Fishing Gear trawl or purse seine.

  • Page 80: Changing The Fishing Gear Properties To Match Your Own Equipment

    Simrad SN90 Operator Manual Changing the fishing gear properties to match your own equipment Use the dialog box to change the fishing gear properties to match Fishing Gear Setup your own equipment. Context Accurate fishing gear properties are important for the following functionality: •...

  • Page 81: Improving The Recognition Of Fish And Schools Using Receiver Filters

    Adjusting the intensity of the echo presentations, page 86 About the receiver filter sequence in the SN90 The filters in the SN90 are implemented in “series”. Any changes to a filter setting may therefore have an effect on subsequent filters.

  • Page 82: Reducing Noise And Reverberation With The Agc (Automatic Gain Control) Function

    When sonar conditions are poor, effective tuning of the filters in the SN90 may be necessary to achieve a satisfactory result. Automatic Gain Control (AGC) is one of the tools provided by the SN90 to remove noise and reverberation from the echo presentation.

  • Page 83: Reducing Propeller Noise And Interference With The Noise Filter

    Use weak filtering - or turn the filter off - if you have strong echoes on short ranges. The filter may then be too powerful, and distort the echo presentation. The filters in the SN90 are implemented in “series”. The noise filtering is done in two stages early in the receiver process.

  • Page 84: Reducing Bottom And Surface Reverberation With The Rcg (Reverberation Controlled Gain) Function

    Simrad SN90 Operator Manual Open the menu. Active Select Noise Filter Select a value from the options provided. The choice you make is by default only applied to the currently selected (active) view. Related topics Improving the recognition of fish and schools using receiver filters, page 79...
  • Page 85 Use for scattered fish. This setting uses a slightly different algorithm than the other scattered fish settings. The filters in the SN90 are implemented in “series”. The reverberation controlled gain adjustment is made late in the sequence, so any changes to the preceding filters may have an effect on how it works.

  • Page 86: Reducing Noise And False Echoes With The Ping-Ping Filter

    Reducing noise and false echoes with the Ping-Ping Filter analyses the historical information from previous consecutive pings Ping-Ping Filter in order to remove unwanted noise and false echoes from the SN90 presentation. Context The following filter options are provided. •...

  • Page 87: Reducing Noise And Reverberation With The Agc (Automatic Gain Control) Function

    When sonar conditions are poor, effective tuning of the filters in the SN90 may be necessary to achieve a satisfactory result. Automatic Gain Control (AGC) is one of the tools provided by the SN90 to remove noise and reverberation from the echo presentation.

  • Page 88: Adjusting The Intensity Of The Echo Presentations

    (Automatic Gain Control). The is applied Display Gain towards the end of the filter sequence in the SN90. This means that you can use if you are not completely satisfied with the results of the automatic gain Display Gain functionality.

  • Page 89: Recording And Replaying Echo Data

    Defining the file and folder settings for data recording A useful function of the SN90 is it ability to record echo data. You can save the data to the Processor Unit hard disk, or onto an external storage device. To retrieve the data files you need to know where they are, and which file names that have been used.

  • Page 90: Recording Echo Data

    The data files will normally become very large. If you wish to record large amounts of SN90 data, make sure that you have enough space on your hard disk. The SN90 is not provided with unlimited disk capacity. We recommend that you save the data files to an external storage device.

  • Page 91: Selecting Replay Mode

    Related topics Recording and replaying echo data, page 87 Selecting Replay mode Replay mode allows you to play back previously recorded raw data. The SN90 can not operate normally while in Replay mode. Neither transmission nor reception take place. Context All playback is controlled by the replay bar.

  • Page 92: Choosing Which Echo Data File(S) To Replay

    Simrad SN90 Operator Manual to Replay. Operation The replay bar opens automatically. It is positioned directly below the top bar at the top of the SN90 presentation. If you need to select which files to replay, select under the Replay File Operation button.

  • Page 93: Accessing The Echo Data Files To Delete, Move Or Copy Them

    Accessing the echo data files to delete, move or copy them Use the data recording functionality provided by the SN90 to save echo data. You can save the data to the Processor Unit hard disk, or onto an external storage device.
  • Page 94 Simrad SN90 Operator Manual In the file manager utility, locate the folder you defined in the dialog box. File Setup Use the functionality provided by the operating system to delete the files, or to copy or move them to the storage device.

  • Page 95: Setting Up Presentation Modes And Views

    Unit you can even move selected views to another display. With the Docking Views function you can move and re-size the views in the SN90 presentation. Context The physical location and size of each view can be changed individually. The content in a view that changes size will automatically be adjusted to take full advantage of the space available.

  • Page 96: Rearranging The Layout Of The Sn90 Presentation

    We recommend that you first save your current user settings. When a complete reorganisation of the view positions and sizes have been completed , you may wish to restore the SN90 presentation to what it was before you changed it. You must use the dialog box to do this.

  • Page 97: Restoring The Locations And Sizes Of The Views

    SN90 Docking Views presentation. When a complete reorganisation of the view positions and sizes have been completed , you may wish to restore the SN90 presentation to what it was before you changed it. Procedure...

  • Page 98: Using The Information Panes To Collect Data From The Echoes

    Simrad SN90 Operator Manual Using the information panes to collect data from the echoes Topics Opening the Depth information pane to read the current depth, page 96 Investigating the biomass, page 97 Locating the position of single fish in the beam, page 98...

  • Page 99: Investigating The Biomass

    It is possible to convert the biomass index to weight (for example in metric tons). Based on practical use of the SN90 in different fisheries, you will soon be able to estimate the weight when you know the type of fish and their sizes.

  • Page 100: Locating The Position Of Single Fish In The Beam

    The chosen transparency percentage is used on all open information panes. Investigate the information provided by the information pane. The SN90 records all the targets from the smallest plankton to the largest whale. The biomass value is an indicator to how much fish you currently have in the beam.

  • Page 101: Selecting Fish Species And Changing Their Size To Improve The Size Distribution Information

    Operating procedures On the top bar, select the appropriate button to open the information pane. Click the bottom right corner of the information pane, and drag to requested size. Select a setting that fits your requirements. Transparency The chosen transparency percentage is used on all open information panes. Investigate the information provided by the information pane.

  • Page 102: Using The Zoom Information Pane To Study Details In The Echogram

    Simrad SN90 Operator Manual Select to open the dialog box. Fish Select Select the specie, click the ruler, and drag it sideways to increase or decrease the fish size. Select to save the selected settings and close the dialog box.
  • Page 103 Operating procedures Click the corners of the zoom rectangle, and drag to change it to desired size. Control the behaviour of the zoomed area. to control the behaviour of the zoom function. When the Area Fixed To Vessel rectangular zoomed area is established, it can either follow the Inspection view while it moves towards the left, or it can stay put.

  • Page 104: Defining Settings Related To User Preferences And Individual Customizing

    Defining the middle position of the transducer, page 112 Selecting menu language You may prefer to use the SN90 with a user interface in your own language. function allows you to select the language to be used in the SN90 Language presentations, menus and dialog boxes.

  • Page 105: Hiding The Menu System

    SN90 presentation. This gives you more space for echo information. Context The menu system is by default located on the right side of the SN90 presentation. The menus are organized in a tree structure with a main menu, a set of secondary menus, and several menu buttons.

  • Page 106: Placing The Menu On The Left Side Of The Sn90 Presentation

    "on/off switches". Some of these "on/off switches" General are used to enable or disable the information shown on the top bar. Note The information shown on the SN90 top bar must not be used for vessel navigation. Procedure Open the menu.

  • Page 107: Enabling Coordinated Universal Time (Utc) On The Bottom Bar

    ZDA datagram. The NMEA ZDA datagram contains the universal time code (UTC), day, month, year and local time zone. Context This is an "on/off" switch. The time is shown on the bottom bar of the SN90 presentation. Procedure Open the menu.

  • Page 108: Adjusting The Backlight Intensity On The Operating Panel

    Select the right side of the button to increase the value. Select the middle of the button to open it.If you have a keyboard connected to the SN90, type the requested value. Related topics...

  • Page 109: Reducing The Light Emitted From The Display Presentation

    Operating procedures Reducing the light emitted from the display presentation When the bridge is dark, the light emitted by the SN90 display can affect your night vision. In order to compensate for this, you can reduce the intensity Context The intensity of the light given off by the SN90 presentation can be adjusted. You can use this function to increase or decrease the light from the screen to match the ambient light.

  • Page 110: Changing The Colour Palette ("Skin") Used In The Sn90 Presentations

    Defining settings related to user preferences and individual customizing, page 102 Changing the colour palette ("skin") used in the SN90 presentations Depending on the ambient light, it is possible to change the SN90 presentation colours to help you see the information. The function allows you to choose which colour Palette theme ("skin") to be used by the SN90.

  • Page 111: Choosing The Colours Used To Present The Echoes

    This implies that the next colour is selected every time the echo strength is doubled. If you choose to use many colours, the resolution of the SN90 presentation is greatly improved. It is then easier to distinguish the difference between the various echoes of different size and/or target strength.

  • Page 112: Configuring The Environmental Parameters

    Simrad SN90 Operator Manual Note When you work in the dialog box, you must always select to save the Installation Apply changes made on a page. You must do this before you continue working on a different page. Procedure Open the menu.

  • Page 113: Setting Up The Alarm Limits For System Protection

    Defining settings related to user preferences and individual customizing, page 102 Setting up the alarm limits for system protection Safe operation of the SN90 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.

  • Page 114: Defining The Middle Position Of The Transducer

    The hull unit provided with the SN90 is designed to lower the transducer down below the ship’s hull when the SN90 shall be used. When the SN90 is switched off, the transducer is hoisted for protection. The SN90 allows you to define a middle position for the transducer.
  • Page 115 Installation Lower the transducer to its middle position. Start normal operation. Make sure that the SN90 operates normally without transmitting into the installation trunk. Related topics Defining settings related to user preferences and individual customizing, page 102 381295/B...

  • Page 116: Saving, Retrieving And Handling User Settings

    Choosing SN90 factory default settings, page 118 Saving the current user settings When you have spent some time working with the SN90, you are probably using specific settings that you know are efficient for your purpose. It is a good idea to save these settings.

  • Page 117: Choosing Previously Saved User Settings

    Choosing previously saved user settings User settings that either you or any of your colleagues have saved can easily be retrieved and put to use. This shortens down the time it takes to get started with the SN90. Context dialog box is used to store your favourite SN90 settings. These settings...

  • Page 118: Renaming Existing User Settings

    You can use different settings to create as many user profiles as you like, and give them any name. All the settings you have chosen using functions and dialog boxes in the SN90 user interface are saved. To rename a user setting, select its name in the list, and then select .

  • Page 119: Deleting User Settings That Are No Longer Used

    You can use different settings to create as many user profiles as you like, and give them any name. All the settings you have chosen using functions and dialog boxes in the SN90 user interface are saved. To delete a user setting, select its name in the list, and then select .

  • Page 120: Choosing Sn90 Factory Default Settings

    Choosing SN90 factory default settings Sometimes it may be useful to reset the SN90 to work with a set of known user settings. A set of "factory settings" is provided for this purpose. The settings may be put to use if you are uncertain of which values to use.

  • Page 121: Defining The User-Selected Features On The Operating Panel

    Operating Panel and the menu system shown in the SN90 presentation. You can also use a standard computer mouse to control the SN90. The mouse can be connected to either the Operating Panel or directly to the Processor Unit.

  • Page 122: Assigning Custom User Settings To The Operating Panel

    Defining the user-selected features on the Operating Panel, page 119 Assigning custom user settings to the Operating Panel dialog box is used to store your favourite SN90 settings. These settings User Settings can be related to different operations, environmental conditions or basic personal preferences.
  • Page 123 Operating procedures page is used to select which physical hardware panel you use on Operating Panel your SN90, and to assign functionality to the programmable buttons. This page is located in the dialog box. The dialog box is located on the menu.

  • Page 124: Assigning Functions To The Rotary Switches On The Operating Panel

    Installation Setup Note The SN90 supports two different operating panels. These are referred to as "Mk1" and "Mk2". In this publication all descriptions and references are related to "Mk2". Procedure Open the menu.

  • Page 125: Assigning Functions To F1, F2 And F3 On The Operating Panel

    . Each button can be assigned a dedicated function. Context page is used to select which Operating Panel physical hardware panel you use on your SN90, and to assign functionality to the programmable buttons. This page is located in the dialog box. The...
  • Page 126 Place Own Ship Marker menu. Select this function to add a square symbol to the vessel’s current position in the SN90 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 127: Lowering And Hoisting The Transducer From The Sonar Room

    Operating procedures Lowering and hoisting the transducer from the sonar room Topics Lowering and hoisting the transducer using the Hoist/Lower Switch, page 126 Lowering and hoisting the transducer using the hand crank, page 128 Emergency lowering and hoisting using the two contactors, page 130 381295/B...

  • Page 128: Lowering And Hoisting The Transducer Using The Hoist/Lower Switch

    Simrad SN90 Operator Manual Lowering and hoisting the transducer using the Hoist/Lower Switch The Operating Panel controls the lowering and hoisting of the transducer. Dedicated buttons are provided for the physical transducer locations. You can also do this from the Motor Control Unit.
  • Page 129 Operating procedures Set the switch to position LOWER. Lowering is automatically stopped when the is activated. Lower Limit Switch If necessary, the transducer can be stopped in any position by setting the to STOP. Hoist/Lower Switch Set the switch to position STOP. Hoisting the transducer: Set the switch to position HOIST.

  • Page 130: Lowering And Hoisting The Transducer Using The Hand Crank

    Simrad SN90 Operator Manual 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 131 Operating procedures Remove the hand crank from its storage position. Remove the plastic plug on the top cover of the hull unit. Mount the hand crank onto the stub shaft through the hole in the top cover. Locate the brake release screw on the motor. Use an 4 mm Allen key to rotate the screw clockwise until the motor brake is released.

  • Page 132: Emergency Lowering And Hoisting Using The Two Contactors

    Simrad SN90 Operator Manual Emergency lowering and hoisting using the two contactors In case of emergency it is possible to bypass the control logic in the Motor Control Unit. You can control the hoisting motor directly using the two designated contactors.
  • Page 133 Operating procedures Open the cabinet door. 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. Locate the (S302).

  • Page 134: Setting Up The Interfaces To Peripheral Devices

    Installation Sensor Configuration so that the information from the "most reliable" sensor is used by the SN90. You can also define manual values in case a sensor is unserviceable, or not installed. Prerequisites The new sensor is physically connected to the SN90 using a serial or network cable.

  • Page 135: Defining The Serial And Ethernet (Lan) Port Parameters

    Defining the serial and Ethernet (LAN) port parameters For any sensor interface to work, the communication parameters must be set up correctly. The SN90 software automatically scans the Processor Unit to locate and identify the available communication ports. Once the software has established a list of valid interfaces, you can set up and control the communication parameters.
  • Page 136 Simrad SN90 Operator Manual • The communication parameters required for the sensor interface are known. Context page provides two lists; one for serial ports and one for Ethernet I/O Setup (LAN) ports. Each list is supported with a set of functions to set up and monitor the communication ports.

  • Page 137: Setting Up The Input From A Navigation System (Gps)

    • The interface port is set up with the correct communication parameters. • The SN90 system is turned on and operates normally. • The new sensor is physically connected to the SN90 using a serial or network cable. It is switched on and in normal operation.
  • Page 138 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 SN90, select Monitor dialog box provides one text box for incoming messages (...

  • Page 139: Setting Up The Interface For Speed Log Input

    Setting up the interfaces to peripheral devices, page 132 Setting up the interface for speed log input In order to operate correctly, the SN90 requires input from a speed log. In most cases a suitable sensor is already installed on the vessel. A global positioning system (GPS) with a compatible output format can also be used.
  • Page 140 You must specify which communication port to use (LAN (Local Area 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 SN90. Note Just making changes and selecting at the bottom of the page will not install anything.

  • Page 141: Setting Up The Interface For Course Gyro Input

    Setting up the interfaces to peripheral devices, page 132 Setting up the interface for course gyro input In order to operate correctly, the SN90 requires input from a course gyro. In most cases a suitable course gyro is already installed on the vessel. A global positioning system (GPS) with a compatible output format can also be used.
  • Page 142 Simrad SN90 Operator Manual • The new sensor is physically connected to the SN90 using a serial or network cable. It is switched on and in normal operation. Neither tools nor instruments are required. Context Note The input from a course gyro is essential for SN90 operation. Without the input from a course gyro, the SN90 will not be able to present correct navigational information.This...
  • Page 143 Operating procedures If you want to check that the peripheral system is transmitting data to the SN90, select Monitor dialog box provides one text box for incoming messages ( Port Monitor ), and one for outgoing messages ( ). Use these boxes and your...

  • Page 144: Configuring The Sensor Interface

    Prerequisites This procedure assumes that: • The new sensor is physically connected to the SN90 using a serial or network cable. • The interface port is set up with the correct communication parameters. • The navigation sensor is installed into the SN90 software. The relevant interface parameters and physical location properties are defined.

  • Page 145: Setting Up The Input From A Motion Reference Unit (Mru)

    • The interface port is set up with the correct communication parameters. • The SN90 system is turned on and operates normally. • The new sensor is physically connected to the SN90 using a serial or network cable. It is switched on and in normal operation.
  • Page 146 Context A motion reference unit (MRU) measures the vessel’s pitch and roll movements in the sea. The information provided by the motion sensor is used by the SN90 to stabilize the beams and the echo presentation. A hull unit may be provided as an optional method to lower and hoist the transducer. A motion sensor for electronic stabilization of the sonar beams is provided.

  • Page 147: Setting Up The Sn90 In A Synchronized System

    Setting up the SN90 in a synchronized system If you want to use the SN90 as a master or slave in a synchronized system, you must set it up for such operation. To do this, you must select which communication port to use for the synchronization interface, and you must select the requested synchronization mode.
  • Page 148 • Master Master mode is used if the SN90 is going to act as the controlling unit in a synchronized system. The peripheral hydroacoustic system(s) are only permitted to transmit when enabled by the SN90. When Master mode is selected, the SN90 will run using its internal ping interval parameters and send trigger signals to the peripheral system(s).
  • Page 149 Operating procedures Slave mode is used if the SN90 is going to transmit only when permitted by a peripheral system. When Slave mode is selected, the SN90 does not transmit ("ping") unless an external trigger appears on the chosen synchronization port.

  • Page 150: Setting Up The Sn90 In A Synchronized System

    Setting up the SN90 in a synchronized system, page 148 Synchronization modes The purpose of the synchronization modes are to set up the SN90 to operate alone, or as a "master" or "slave" in a synchronized system. Whenever more than one hydroacoustic system is installed on a vessel, interference may occur.

  • Page 151: Synchronization Using Clear To Send (Cts) And Request To Send (Rts) Signals

    • Master Master mode is used if the SN90 is going to act as the controlling unit in a synchronized system. The peripheral hydroacoustic system(s) are only permitted to transmit when enabled by the SN90. When Master mode is selected, the SN90 will run using its internal ping interval parameters and send trigger signals to the peripheral system(s).

  • Page 152: Synchronization Sequences

    Wait for slave mode. Slave mode When the SN90 is set up in Slave mode, it must receive a trigger signal from a peripheral system every time the SN90 is going to transmit. This trigger signal is connected to a serial port on the Processor Unit, and the Clear To Send (CTS) pin is used to give the SN90 an "event"...

  • Page 153: Selecting Synchronization Port

    Setting up the SN90 in a synchronized system, page 148 Selecting synchronization port If you want to use the SN90 as a master or slave in a synchronized system, you must set it up for such operation. To do this, you must select which communication port to use for the synchronization interface, and you must select the requested synchronization mode.

  • Page 154: Selecting Synchronization Mode

    Setting up the SN90 in a synchronized system, page 148 Selecting synchronization mode If you want to use the SN90 as a master or slave in a synchronized system, you must set it up for such operation. To do this, you must select which communication port to use for the synchronization interface, and you must select the requested synchronization mode.
  • Page 155 • Master Master mode is used if the SN90 is going to act as the controlling unit in a synchronized system. The peripheral hydroacoustic system(s) are only permitted to transmit when enabled by the SN90. When Master mode is selected, the SN90 will run using its internal ping interval parameters and send trigger signals to the peripheral system(s).

  • Page 156: Menu System

    Simrad SN90 Operator Manual Menu system Topics About the menus and menu buttons, page 155 Using the “smart” menu buttons, page 156 Main menu, page 158 Operation menu, page 160 Display menu, page 162 Setup menu, page 165 Active menu, page 169...

  • Page 157: About The Menus And Menu Buttons

    To Menu retrieve the menu, select one more time. When the menu is hidden, it is temporarily Menu shown on the left or right side of the SN90 presentation if you move the cursor to that position. 381295/B...

  • Page 158: Using The "Smart" Menu Buttons

    Simrad SN90 Operator Manual Using the “smart” menu buttons Each menu provided by the SN90 contains several menu buttons. Each button shows the purpose of the button. Some of them also display the current setting. Depending on the properties of each individual button, several methods can be used to change settings.
  • Page 159 Menu system Choosing a setting with the keyboard Place the cursor on the button. Click the button to open the text field. Type a numerical value. If the value exceeds the permitted range, the frame turns red. Type a new value within the accepted range.

  • Page 160: Main Menu

    It offers the most common Main functions for efficient use of the SN90. Unless you hide the entire menu system, the menu is visible at all times, even if you close the secondary menus.
  • Page 161 Menu system • Bearing The Horizontal view in the SN90 presentation covers the entire 160° sector For the other views you must define the horizontal direction of the beam. Use Bearing adjust the horizontal angle referenced to the vessel heading.

  • Page 162: Operation Menu

    Immediately after you have turned on the SN90, the icon is flashing. The icon Operation is flashing to indicate that even if the SN90 is turned on, "pinging" is disabled. When the SN90 is turned on, is by default set to Off. This is a safety precautions to Tx Power prevent inadvertent transmissions when the vessel is in dry dock.
  • Page 163 Menu system • Tx Power to increase or decrease the output power. The output power is selected Tx Power from predefined steps. 381295/B...

  • Page 164: Display Menu

    The choices in the this menu depends on which view in the SN90 presentation that is currently "active". The menu may therefore change from one view to another. The screen capture may not show you all the menu choices.
  • Page 165 Menu system • Screen Brightness The intensity of the light given off by the SN90 presentation can be adjusted. You can use this function to increase or decrease the light from the screen to match the ambient light. • Transparency When you open an information pane, you will see that it is transparent.
  • Page 166 SN90 presentation. • About Every SN90 software release is uniquely identified. The dialog box identifies About the current SN90 software version with its release date. The version described in this Operator Manual is 3.1.4. 381295/B...

  • Page 167: Setup Menu

    An invisible area - the tracking area - is created as an acquisition area. In order for the SN90 to find and lock on the intended target, it needs to be kept within this tracking area. If the intended target falls outside the area, the tracking can not be started.
  • Page 168 Depending on the current sea and weather conditions, you may need to change these values frequently. • Language You may prefer to use the SN90 with a user interface in your own language. A selection of languages is provided. The function allows you to select the Language language to be used in the SN90 presentations, menus and dialog boxes.
  • Page 169 • Installation Before you use the SN90 you must set it up to communicate with the relevant peripherals. This includes the transducer. Use the dialog box to set up all...
  • Page 170 A motion reference unit (MRU) measures the vessel’s pitch and roll movements in the sea. Depending on make and type, some sensors will also measure heave. The information provided by the motion sensor is used by the SN90 to stabilize the beams and the echo presentation.

  • Page 171: Active Menu

    The choices in the this menu depends on which view in the SN90 presentation that is currently "active". The menu may therefore change from one view to another. The name of the currently active view is identified at the top of the menu.
  • Page 172 • Ping-Ping Filter analyses the historical information from previous consecutive Ping-Ping Filter pings in order to remove unwanted noise and false echoes from the SN90 presentation. • Pulse Type function allows you to select the "shape" of the transmitted pulses Pulse Type ("pings").
  • Page 173 Information Pane Options The SN90 offers several information panes to provide additional and detailed data from the SN90 presentation. The information panes are opened and closed using the buttons on the top bar. Several of the information panes are fitted with a button.

  • Page 174: Objects Menu

    - 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 SN90 presentation. Each object is identified with a visual marker.
  • Page 175 Delete Select to delete all the markers you have selected in the objects list. Each Delete marker is removed both from the list and from the SN90 presentation. Select to add a new marker manually. The dialog box opens to New Marker accept position and depth information.
  • Page 176 Simrad SN90 Operator Manual Control buttons In the object list, select the object line to activate the control buttons for that particular object. Priority One marker can be given priority status to identify the object as the most important target or position.
  • Page 177 Menu system Comment A text field at the bottom of the menu allows you to type comments. You Objects can only do this if you have computer keyboard connected to your Processor Unit. Insert Relative Position Select to insert object information into the comment field. Insert Relative Position The information is inserted as a text string that contains the following information: •...

  • Page 178: Visual Objects Menu

    The choices in the this menu depends on which view in the SN90 presentation that is currently "active". The menu may therefore change from one view to another. The screen capture may not show you all the menu choices.
  • Page 179 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 SN90 presentation, and visualizes your past movements. The function adds Minute Markers markers to the line to indicate the travelled distance for each minute.
  • Page 180 The length of the line reflects its speed. For this function to work, a sea current meter must be connected to the SN90. The use of an ADCP (Acoustic Doppler Current Profiler) is recommended.

  • Page 181: Cosmetics Menu

    The choices in the this menu depends on which view in the SN90 presentation that is currently "active". The menu may therefore change from one view to another. The screen capture may not show you all the menu choices.
  • Page 182 Simrad SN90 Operator Manual • Coverage Plot When you operate with sector transmissions, the area covered by the sonar beams is limited by the chosen transmit sector angle. To make it easier to recognize the area limits, dedicated border lines may be added to the presentation. These lines are used to outline the sector.

  • Page 183: Shortcut Menus

    The screen capture is provided as an example. In this context, the phrase marker is used to identify a visual symbol placed in the SN90 presentation. By placing a marker on the echo it is regarded as an object that you can act upon.
  • Page 184 Place Own Ship Marker in the SN90 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 185 Menu system • Place Ruler Place the cursor over the first echo. Right-click to open the shortcut menu, then select . The ruler starts wherever you place the cursor, and ends when you Place Ruler release the button. The length and relative bearing of the ruler is displayed next to it.
  • Page 186 ©2020 Kongsberg Maritime...

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