GPSMAP 700 Series Owner’s Manual
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Sonar
Sonar
When connected to a transducer, the following 700 series models can be used as fishfinders:
• GPSMAP 720s
• GPSMAP 740s
• GPSMAP 750s
Sonar Views
The chartplotter shows sonar data using three different views: a full-screen view, a split-zoom view, and a
split-frequency view.
Full-screen Sonar View
The full-screen sonar view shows a full-view graph of sonar readings from a transducer. The range scale along
the right side of the screen shows the depth of detected objects as the screen scrolls from the right to the left.
From the Home screen, select
Sonar
>
Full Screen
.
Full-screen Sonar View
➌
➍
➋
➏
➐
➎
➊
➊
Range adjustment buttons
➋
Depth, water speed, and unit voltage
➌
Suspended target
➍
Bottom
➎
Range
➏
GPS speed and GPS heading
➐
Transducer frequency
Setting the Zoom Level on the Full-screen View
You can zoom in to a section of the full-screen sonar view.
1. From the Home screen, select
Sonar
>
Full Screen
>
Menu
>
Zoom
.
2. Complete an action:
• Select
2x Auto Zoom
to zoom in on the sonar data at two-times magnification.
• Select
4x Auto Zoom
to zoom in on the sonar data at four-times magnification.
• Select
Manual Zoom
to set the depth range of the magnified area manually. Select
View Up
or
View Down
to set the depth range of the magnified area, select
Zoom In
or
Zoom out
to increase or
decrease the magnification of the magnified area, and select
Done
.
• Select
Bottom Lock
to zoom in on sonar data from the bottom depth, select
Up
or
Down
to set the
depth range of the magnified area, and select
Done
.
