88 GPSMAP
®
4000/5000 Series Owner’s Manual
Sonar
Split-zoom Sonar View
The split-zoom sonar view shows a full-view graph of sonar readings and a magnied portion of that graph on
the same screen.
From the Home screen, select > .
Split-zoom Sonar View
➐
➊
➌
➎
➍
➏
➋
➊
Depth, temperature, and water speed
➎
Transducer frequency
➋
Zoomed depth scale
➏
Zoom window
➌
GPS speed and GPS heading
➐
Range
➍
Zoom level