Turning On the A-Scope
NOTE:
This feature is available in the
Traditional sonar views.
The a-scope is a vertical flasher along the right side of the view, showing you what is underneath the transducer right now. You can use the a-scope to identify target returns that may be missed when the sonar data is quickly scrolling across the screen, such as when your boat is moving at high speeds. It can also be helpful for detecting fish that are close to the bottom.
The a-scope above shows fish returns 
and a soft bottom return 
.
-
From a sonar view, select
> Sonar Setup > Appearance > A-Scope.
-
If necessary, select
> Peak Hold to adjust the length of time the sonar returns are displayed.