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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
Gain
Tip
During normal operating conditions we recommend that you keep the gain between 15
and 30. If you need to adjust the gain "from scratch" disable AGC (Automatic Gain
Control) and RCG (Reverberation Controlled Gain) to see the immediate effect of the
gain adjustments. While you adjust the gain you may find it useful to have a known
target (for example an island) as reference.
Procedure
1
Click in the view you want to activate.
The active view is identified with a thicker border. Unless you use the
function, all changes you make will only be applied to this view.
2
Turn the relevant rotary switch to make the adjustment.
Tip
The Operating Panel is fitted with three rotary switches. The switches are identified
with numbers. Each switch can be assigned a function related to range, gain or
bearing. Investigate the functionality provided on the
page is located in the
Optionally:
3
Observe the
Main
4
Select
.
Gain
5
Make the necessary adjustment.
6
Open the button and select
the views in the current presentation mode.
Related topics
Controlling the gain and range settings, page 63
64
setting with the
TVG
dialog box.
Installation
menu.
if you wish to use the chosen setting in all
Apply to all
(Time Variable Gain) setting.
Operating Panel
Apply to all
page. This
381295/B
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