Using Sonar

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.

Understanding the Full Screen

Select the Full Screen option to view a full-screen graph of the sonar readings from the 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.

Depth, temperature, and water speed

Suspended target

Bottom

Range

 

GPS speed and GPS heading

Transducer frequency

Understanding the Split Zoom Screen

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, select Sonar > Split Zoom.

Depth, temperature, and water speed

Zoomed depth scale

Zoom Range

GPS speed andwindow GPS heading

Zoom level

Transducer frequency

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GPSMAP® 4000/5000 Series Owner’s Manual

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