Garmin 720 Two-Way Radio User Manual


 
GPSMAP 700 Series Owner’s Manual 71
Sonar
Sonar
When connected to a transducer, the following 700 series models can be used as shnders:
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  > .
Full-screen Sonar View
Range adjustment buttons
Depth, water speed, and unit voltage
Suspended target
Bottom
Range
GPS speed and GPS heading
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  >  >  > .
2. Complete an action:
Select  to zoom in on the sonar data at two-times magnication.
Select  to zoom in on the sonar data at four-times magnication.
Select  to set the depth range of the magnied area manually. Select  or
 to set the depth range of the magnied area, select  or  to increase or
decrease the magnication of the magnied area, and select .
Select  to zoom in on sonar data from the bottom depth, select  or to set the
depth range of the magnied area, and select .