Simrad SN90, Руководство оператора

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381295/B
83
Tip
We recommend that the reverberation controlled gain is active all the time, but be careful
in the vertical presentation.The filter works best on small schools. This rough guide to
the settings can be used as a starting point for own experiments.
1 Use for schools.
2 Use for schools with higher density.
3 Use for schools close to bottom. This setting will also reduce the bottom echoes.
4 Use for scattered fish.
5 Use for scattered fish. This setting uses a slightly different algorithm than the other
scattered fish settings.
6 Use for schools. This setting uses a slightly different algorithm than the other
school settings.
7 Use for schools. This setting uses a slightly different algorithm than the other
school settings.
8 Use for scattered fish. This setting uses a slightly different algorithm than the other
scattered fish settings.
9 Use for scattered fish. This setting uses a slightly different algorithm than the other
scattered fish settings.
The filters in the SN90 are implemented in “series”. The reverberation controlled gain
adjustment is made late in the sequence, so any changes to the preceding filters may
have an effect on how it works.
Procedure
1 Click in any view to make it active.
The active view is identified with a thicker border. Unless you use the
Apply to all
function, all changes you make will only be applied to this view.
2 Open the
Active
menu.
3 Select
RCG
(Reverberation Controlled Gain).
4 Select a value from the options provided.
The choice you make is by default only applied to the currently selected (active)
view.
Related topics
Improving the recognition of fish and schools using receiver filters, page 79
Operating procedures