90
922-00027001/2.2
TVG Setup dialog box
When an acoustic pulse is sent through the water, it will gradually lose its energy. The
greater the distance between the Sonar Head and the target(s), the greater the loss of energy.
The
TVG
(Time Variable Gain) function is used to compensate the received echo data for the
loss of acoustic energy due to geometric spread and absorption.
How to open
Note
Each sonar application has its own TVG profile. Before changing the TVG settings, select
the sonar application you want to configure from the
Sonar applications list
.
Click the
Preferences
button. This button is located on the top bar.
Click the
Show TVG Config
button.
Simrad FM90 Reference Manual
Содержание FM90
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