Garmin gpsmap 5212 User Manual

Using Sonar

When connected to an optional Garmin GSD 22 sounder module and a transducer, your chartplotter 

can be used as a fishfinder. The GSD 22 connects through the Garmin Marine Network and shares 

sonar data with every chartplotter connected to the network.

Use the Full Screen to view a full-screen graph of the transducer’s sonar readings.
From the Home screen, touch 

 > 

. 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.

Use the Split Zoom screen to view the full sonar data from the graph and a zoomed in portion on the 

same screen.
From the Home screen, touch 

 > 

.