Installation manual

Simrad SD570

850--160139 / A

5.7 RCG (Reverberation Controlled Gain)

TheRCG functionisindividual for eachof the 32 receiving beams.

Signals with small variations, like propeller noise, surface and

bottom reverberation will be eliminated, while signals with fast

variations, like target echoes or bottom echoes will not be

removed.

RCG........:

OFF

WEAK

*MEDIUM

STRONG

As shown in the menu the RCG function has four different

settings. It is difficult to tell which is the best for extreme varying

sonar conditions, but with experience and by repeated usage one

will discover the best setting for any given situation.

The normal gain setting when RCG is OFF is 0-3. The optimal

gain setting when using RCG is normally gain 6.

Note that scattered fish can be perceived as reverberation, so

therefore the RCG should be used with care if scattered schools

are to be detected.