40
922-00047001/1.1
Procedure
1
Click one of the filter buttons.
Observe the changes in the sonar view.
2
If you are using the Ping to Ping filter, you can Increase or decrease the filter effect.
a
Click the
Display Widget
icon.
This icon is located in the lower-right corner of the sonar view.
b
Drag the
Filter
slider to adjust the strength of the filter.
3
To turn all the filters off, deselect the filter buttons (the buttons will no longer be
highlighted).
Related topics
Ping to Ping filter, page 84
Noise Reduction filter, page 84
Limit Strong Targets filter, page 84
Adjusting the sonar views, page 34
Adjusting the TVG (Time Variable Gain) setting
You can adjust the time variable gain for each sonar application in the
TVG Setup
dialog box.
Context
TVG
(Time Variable Gain) compensates for the loss of acoustic energy due to geometric
spread and absorption.
Tip
Click the
TVG
button on the top bar to enable the TVG Correction filter. This filter reduces
TVG-amplified noise at further ranges where no targets appear. You can adjust the
percentage of this filter (applied to the range) in the
Display Widget
.
Procedure
1
Select the sonar application you wish to configure from the
Sonar applications list
on the top bar.
Note
Each sonar application has its own TVG profile.
Simrad FM90i Reference Manual
Содержание Simrad FM90i
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