Installation manual

Parameters

RCG

The RCG (Reverberation Controlled Gain) parameter dialogue

opens when you click the

RCG button in the Horizontal and

Vertical menus.

Reverberation C ontrolled Gain (RCG) regulates the receiver gain

individually for each of the 64 receiving beams. If you select

weak or medium ﬁlter strength, signals with small variations,

like propeller noise, surface and bottom r everberations will be

removed, while signals with fast variations, like target echoes

or bottom echoes, will not be removed. If you select a strong

ﬁlter, a special function removes the bottom, while echoes on

the bottom will be presented.

Note

Scattered ﬁsh can be perceived as reverberation. The RCG

function must therefore be used with care if scattered schools

are to be detected.

Options

The following options are available in the RCG parameter

dialogue:

•

Off: Click to switch the ﬁlter off.

•

[Value]: Click to select ﬁlter strength.

•

Close: C lick to close the parameter dialogue.

•

Help: Click to access the on-line help.