Assigning functions to F1, F2 and F3 on the Operating Panel (Mk2)

No specific functionality is assigned.

This is an "on/off" function. When Auto Tilt mode is activated the beam will automatically change its tilt angle for each transmission ("ping"). The centre of the tilt sector is defined by the chosen tilt angle just before the Auto Tilt mode is started. The chosen tilt sector is shown on the tilt indicator in the Horizontal view using a shaded background. The sector and step settings are made using the Tilt function on the Main menu.

Place the cursor anywhere in the view, right-click and select Zoom. Only one zoom level is provided. Select Zoom one more time to restore the original view.

This is an "on/off" function. Unless you need to make frequent changes to the operating parameters, you may want to hide the menu from the display presentation. This gives you more space for echo information.

Select Audio to turn the audio output on or off.

This is the same function as Place Own Ship Marker on the shortcut menu. Select this function to add a square symbol to the vessel’s current position in the echo presentation. The own ship marker is now regarded as an object. All information about the object is shown in the Objects menu listed as "OSM". Use Delete Own Ship Marker on the shortcut menu to delete the marker from the current view.

This is an "on/off" function. Set this function to On to start the automatic search function. In the Auto Bearing mode the ST90 system will automatically search within defined sector limits. The sector is identified in the view using two angular symbols. The sector and step settings are made using the Bearing function on the Main menu.

This is an "on/off" function. The Screen Recording function allows you to record and save the echo presentation as a video file. Each screen recording you make is saved in .mp4 format on the Processor Unit hard disk. The file name reflects the current date and time.

Select Screen Recording to start and stop the recording from the Operating Panel.

Use the Screen Recording page to define where the video files are saved. This page is located in the Output dialog box.

Select Delete Oldest Marker to use the Operating Panel to remove the oldest marker from the echo presentation.

Each marker is identified with its geographical location. This marker location can be very useful for other instruments. For example, you can export this information to a chart plotter. You can configure your ST90 system to export marker information. You must choose a suitable output port and select which datagram formats to export.

Place the cursor on the marker from which you want to export the target information. Press Send To External.

Press Place Marker to create a visual marker symbol at the cursor's current position. Each marker is shown as a small triangle with or without a short identifying label.

Placing a marker on an echo identifies the echo as "interesting". It is regarded as an object that you can act upon. You can add as many markers as you like.

Markers are shown as small triangles. Select Delete All Objects to remove all the markers from the views.

Use Display Gain to increase or decrease the "strength" of the echo presentation.

Use this setting together with Gain to adjust the sensitivity of the ST90 system. Display Gain controls the "amount" of echo that is displayed, in other words the "strength" or "intensity" of the echo presentation. The function thus increases or decreases the presentation of the echo colours.

Adjust the Display Gain so that you can see the targets without too much noise and reverberation. The chosen setting is a matter of personal preferences.