Understanding The Split Freq Screen; Understanding The Split Zoom Screen - Garmin GPSMAP 420 Owner's Manual

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Understanding the Split Freq Screen

Use the Split Freq screen (dual frequency transducer only) to view
both the 50kHz and 200kHz frequencies on the same screen. A
50kHz frequency graph appears on the left; a 200kHz frequency
graph appears on the right.
To open the Split Freq screen, from the Home screen, select
Split Freq.
Depth, temperature, and speed
Frequencies
3

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 >
Zoomed
depth scale
Range
Zoom level
Sonar Split Zoom.
>
Depth, temperature,
and speed
Transducer frequency
or beam width
GPSMAP 400 Series Owner's Manual
®
Zoom
Range
window