Using Sonar; Understanding The Full Screen; Understanding The Split Zoom Screen - Garmin GPSMAP 4210 Owner's Manual

u S
SInG onar
When connected to an optional Garmin GSD 22 sounder and a transducer, your chartplotter can be
used as a fishfinder. The sounder module connects through the Garmin Marine Network and shares
sonar data with every chartplotter connected to the network.

Understanding the Full Screen

From the Home screen, select
sonar readings. 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
Depth, temperature,
and water speed
Suspended
target
Bottom
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
Depth, temperature,
and water speed
Zoomed depth
scale
GPS speed and
GPS heading
Zoom level
Transducer frequency
44

Using Sonar

Sonar Full Screen
> to view a full-screen graph of the transducer's
Sonar > Full Screen.
Sonar > Split Zoom.
Zoom
window
GPSMAP 4000 Series Owner's Manual
Range
Range