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Simrad SH40
How to adjust the gain
You can adjust the sonar gain by m eans of the control buttons
on the Sonar Control Panel, or by using the
Gain button on the
Horizontal and Vertical menus.
UsingtheSonarControlPanel:
1 Locate the Gain eld on the Sonar Control Panel.
2 Press the
Gain H+ or Gain H- to increase or decrease the
horizontal gain.
3 Press the
Gain V+ or Gain V- to increase or decrease the
vertical gain.
Using the menu system:
1 Click the Horizontal or Vertical tabtoopentherespective
menu.
2 Click the
Gain button to adjust the gain.
Click the left side of the button to decrease the gain.
Click the right side of the button to increase the gain.
Click the middle of the button to open the parameter
dialogue.
How to control the RCG
The RCG (Reverberation Controlled Gain) regulates the receiver
gain individually for each of the receiving beams. If you select
Weak and Medium, echoes from propellers, surface and bottom
reverberations will be suppressed, while target echoes will
remain in view. If you select
Strong, a special lter removes the
bottom, while echoes on the bottom will be presented.
Note
Scattered sh can be perceived as reverberation. The RCG
function should therefore be used with care if scattered schools
are to be detected.
1 Click the Horizontal or Vertical tabtoopentherespective
menu.
2 Click the
RCG button to adjust the parameter.
Click the left side of the button to decrease the parameter
value.
Click the right side of the button to increase the
parameter value.
Click the middle of the button to open the parameter
dialogue.
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