Garmin 396 Guida Utente

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Using the Sonar Page
When combined with a GSD 20 Sounder Module, your GPSMAP 
396 becomes a powerful fishfinder/flasher with the Sonar Page. If 
a GSD 20 is attached, but the unit does not detect a transducer, a 
“Sonar Turned Off” message appears across the Sonar Page. If a 
GSD 20 is not attached, the Sonar Page only appears when the unit 
is in Simulator Mode. 
The middle of the page contains a right-to-left moving sonar image 
of the water beneath your boat. Items appear as they pass under your 
transducer. Those items on the right side of the screen are closer 
to you than those on the left. Along the right side of the screen is 
an adjustable scale that reflects the depth of the area being shown. 
The top left corner shows the Adjustment Option, the depth, and the 
water temperature. 
Sonar Page
The sonar returns show as red (strongest), then orange (strong), 
yellow (medium), green (weaker), and blue (weakest). The Fish 
Symbols option allows you to view the actual sonar data, a fish 
symbol or a combination of both. When the unit is set to 
Dual, the 
appearance of the fish symbols changes. Fish symbols from the 
center of the beam (200 kHz) are solid (or narrow arches), but the 
returns from the edges of the beam (50 kHz) are hollow (or wide 
arches). 
The Sonar Page can also be set to show a split screen view of a 
zoomed portion of the sonar, bottom lock (screen scaled from the 
bottom up), or a combination of these options. For example, you 
can choose to show dual frequency at a 2X zoom (Dual 2X) on one 
half and normal range dual frequency (Dual) on the other half. The 
current display mode is shown at the bottom of each sonar screen.
136 
GPSMAP 396 Pilot’s Guide
S
ETTING
 
UP
 
AND
 U
SING
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ONAR
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SING
 
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ONAR
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AGE