Operating Panel description (Mk3)
The SN90 Operating Panel is the most important device for fast and efficient user interface.The Operating Panel offers all necessary control functions for normal operation.
The controls provided by the Operating Panel are arranged in logical functional groups. This offers you clear and easy operation with fast access to key functionality. All the functionality provided by the SN90 system can be accessed using the trackball on the Operating Panel and the menu system shown in the display presentation. The Operating Panel allows you to assign certain functions to dedicated buttons and switches.
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(A) Power Off / Up
Press and hold this button for five seconds to turn the SN90 system off. Press Up to hoist the transducer to its upper position.
Note
Before you turn on the SN90 system, make sure that you have sufficient water depth to lower the transducer!
You must never turn on the SN90 system when the ship is in dry dock. The transducer can be damaged if it transmits in the open air.
You must never turn off the SN90 system by means of the on/off switch on the Processor Unit. You must ALWAYS use the Operating Panel or select Power Off on the top bar.
(B) Down
Press Down and hold it for three seconds to lower the transducer to its bottom position.
While the transducer is moving the indicator lamp flashes, and an audible signal is sounded. When the requested position has been reached, the indicator lamp is lit, and the audible signal stops.
(C) Rotary switches
Turn a rotary switch to apply a predefined function. To choose which function to apply open the Operating Panel page. Under Rotary Switch Options, assign one function to each rotary switch on the Operating Panel.
(D) Panel Backlight
Adjust the background illumination to suit your preferences and the ambient light conditions.
(E) User Settings / Presentation Modes
On the Mk3 Operating Panel, the requested user setting or presentation mode is chosen with a single button. To choose which function to apply open the Operating Panel page. Select Mode Selection to specify what you want to use the button for.
Press the button repeatedly to cycle through the settings or modes.
User Settings
Any user setting selected on the Operating Panel is identified in the upper left corner of the Horizontal view. The identifying number refers to the User Setting number on the Operating Panel page. Click on the text to make it larger. Click one more time to restore the original font size.
Presentation Modes
All echoes offered by the SN90 system are shown in rectangular views. Combinations of these views are organized in presentation modes. Each presentation mode offered by the SN90 system provides a selection of views in a predefined pattern. You must first find the presentation mode that meets your operational requirements, then you can change the size of the individual views.
(F) Target Marker
During normal operation, some echoes are clearly more interesting than others. In many situations specific echoes may be regarded as targets. To set up the SN90 system to provide such information, you can start target tracking.
Place the cursor over the echo you wish to track. Press Target Marker. The tracked target is regarded as an object, and it is identified with a circle and two lines. The bearing line is automatically locked on the object to reflects its bearing. By default, a new manually initiated tracked object is automatically given priority status. If another object has this priority, the status is transferred to the new object. The priority is identified with a "P".
Tip
On the User Settings Setup page, de-select New Manually Initiated Track if you do not want new tracked targets to become priority targets. This page is located in the Installation dialog box. To open the page, select Installation on the Setup menu.
(G) Set Priority Target
You can give priority status to one marker to identify the relevant object as the most important target or position. If another object has this priority, the status is transferred to the new object. The priority is identified with a "P".
(H) Set New Ship Centre / Reset Ship Centre
Place the cursor anywhere in the view and press Set New Ship Centre. The function moves the vessel symbol to the selected position. Press the button one more time to move the vessel symbol back to the centre of the presentation.
(I) Marker
Press Marker to place a generic marker in the active view. One or more markers can be placed in the view to identify specific echoes. Each marker is shown as a small triangle with or without a short identifying label. It is positioned based on the two known axes in the view as well as the tilt and bearing of the current ping.
(J) Circle Marker
Press Circle Marker to place a circular marker in the active view. 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.
(K) Gear
Use the Fishing Gear function to define your type of fishing gear. Use the Fishing Gear Setup page to change the fishing gear properties to match your own equipment. Press Gear to place a gear symbol in the active view.
Purse seine
The gear symbol is provided as a tool to help you plan and shoot the purse seine. The symbol is intended to be used in a structured sequence that starts when you plan to shoot the purse seine. For use with a purse seine, the intended process follows:
1 To start the process:
•  Press Gear on the Operating Panel.or:
•  Right-click and select Show Gear Symbol on the shortcut menu.
This places a circle marker in the view. The size and location of the marker is defined by the choices you have made with the Fishing Gear function. Until you proceed, the marker follows the movements of the vessel by keeping its relative location to the bow. This allows you to position your vessel in the best possible location before you shoot the purse seine.
2 When you shoot the net:
•  Press Gear on the Operating Panel.or:
•  Right-click and select Place Gear Symbol on the shortcut menu.
The first timer starts when you select Place Gear Symbol.
A rectangular marker is placed in the view, and marks the position where the purse seine was shot. The circular marker is disconnected from the vessel movements, and acts as a guideline for your manoeuvring. The history line shows the movements of your vessel. Since the SN90 system 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. In this phase the Fishing Gear function is disabled.
The first timer stops when the progress bar reads 100%. This action starts the second timer, which stops when you select Remove Gear Symbol.
3 When the process is finalized:
•  Press Gear on the Operating Panel.or:
•  Right-click and select Remove Gear Symbol on the shortcut menu to delete the markers from the view.
Trawl
When the function is activated, the Horizontal view presents a trawl illustration. The size and location of the image reflect the measurements you added in the Fishing Gear Setup dialog box.
The trawl image appears aft of the vessel symbol. When your vessel turns, the trawl presentation will reflect this, but the location and movements could be more precise. If you want an accurate trawl positioning, you must equip the trawl with relevant positioning sensors and connect the data to the SN90 system.
(L) Screen Capture
Press Screen Capture to make a copy of the current display presentation. You can choose either a single screen capture or a sequence with multiple screen captures. Open the Screen Captures dialog box to select screen capture mode. Use Screen Capture File Location to define where to save your screen captures.
(M) Increase / Decrease
Press these buttons to increase or decrease the value of the current setting.
(N) Mouse buttons
These buttons correspond to the two most common buttons on a standard computer mouse. When an instruction tells you to "select" or "left-click", press the left button. When an instruction tells you to "right-click", press the right button.
(O) Trackball
Use the trackball to control the cursor in the user interface.
Before you can change the settings related to a view, you must click inside the view to activate it. The changes you make are by default only valid for the active view. Several of the functions offer Apply to All. If you select Apply to All your setting is applied to all the views in the current presentation mode.