Adjusting Color And Gain Settings; Using The Cursor On The Echosounder Panel - Simrad NSO-II Operator's Manual

Adjusting color and gain settings

Gain
The gain controls the sensitivity of the echosounder.
The more you increase the gain, the more details will be shown on the image. However, a
higher gain setting may introduce more background clutter on the image. Conversely, if
the gain is set too low weak echoes may not be displayed.
Auto gain
The Auto gain option will keep the sensitivity at a level that works well under most
conditions.
With the gain in auto mode, you can set a positive or negative offset that gets applied to
the auto gain. This is indicated as A-40 - A40.
Color
Strong and weak echo signals have different colors to indicate the different signal
strengths. The colors used depend on which palette you select.
The more you increase the Color setting, the more echoes will be displayed in the color at
the strong return end of the scale.
Adjusting the Gain and Color settings
Gain and Color are adjustable by tapping and a vertical dragging movement or by using
the OP40 rotary knob.
You select between Gain and Color by pressing the OP40 rotary knob. The active control
will expand and display it's name in full. You can then adjust the value by turning the
OP40 knob.
If you press and hold the OP40 rotary knob when Gain is selected, you switch between
Auto and Manual gain option.
If no adjustments are made within 3 seconds the controls will return to default size.

Using the cursor on the echosounder panel

The cursor is by default not shown on the sounder image.
When you tap the screen the cursor will appear and the depth at the cursor position will
be shown, the information window and the history bar will be activated.
To remove the cursor and cursor elements from the panel, press the Clear cursor panel
key or the OP40 X key.
Viewing sounder history
Whenever the cursor is shown on a sounder panel, the red scroll bar is also shown. The
scroll bar shows the image you are currently viewing in relation to the total echosounder
image history stored.
The scroll bar on the far right side indicates that you are viewing the latest soundings.
If you position the cursor to the left side of the screen, the history bar will start scrolling
towards left, and the automatic scrolling as new soundings are received will be turned off.
You can pan the image history by dragging left/right on the screen.
Clear cursor panel button or press the OP40 X key.
To resume normal scrolling, tap the
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Echosounder | NSO-II Operator Manual