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g
Click the
Display Widget
icon to hide the widget.
3
Adjust the image in the up and down sounder views.
a
Click the
Display Widget
icon.
This icon is located in the bottom-right corner of each sonar view.
Observe that the
Display Widget
opens.
b
The
NR
button shows the status
of the Noise Reduction filter in the
sounder view. Clicking this button
will enable or disable the Noise
Reduction filter.
This filter reduces noise by boosting
weak echoes and suppressing strong
echoes. In the sounder views, use
this filter to see the fish, footrope,
and bottom at the same time.
c
To adjust the RCG (Reverberation Controlled Gain), check the box and drag the
RCG
slider to increase or decrease the gain.
Uncheck the box if you want to disable the RCG.
Note
The
RCG
(Reverberation Controlled Gain) controls the receiver processing
individually for the receiving beams. It will automatically remove unwanted
reverberation from the bottom or from the sea surface. The RCG will help you to
see the footrope when there are a lot of fish. It may however also remove scattered
fish from the presentation.
d
To adjust the display gain manually, check the box and drag the
Gain
slider to
increase or decrease the gain.
Note that automatic gain adjustment is not available for the up and down-sounder
views.
e
To choose your echo colours, right-click on the
Palette
bar to cycle through the
colour scale options.
f
To change the colour threshold, drag the
Palette
slider to increase or decrease
the number of colours.
g
Click the
Display Widget
icon to hide the widget.
Содержание FM90
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