Setting Up And Using Sonar; Showing Sonar On The Map Page - Garmin GPSMAP 376C Owner's Manual

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This section covers the additional sonar options for the
GPSMAP 376C when used in conjunction with a GSD 20 or
GSD 21 Sounder Module. Read the GSD 21 or GSD 20 Sounder
Module Installation Instructions to properly install the sounder
module. When you turn on your GPSMAP 376C, the sounder
module automatically turns on.
NOTE: You MUST have a transducer and a GSD 21 or GSD 20
installed and connected to your GPSMAP 376C to use the sonar
features.
The Sonar Page is added to the end of the page sequence when you
are in Marine Mode. To view the Sonar Page, press PAGE or QUIT
repeatedly until it appears.

Showing Sonar on the Map Page

You can change the layout of the Map Page to a split screen to show
the sonar on the Map Page. You must be in Marine Mode to use
sonar.
To show the Sonar Page on the Map Page:
1. Press and hold PAGE/MODE.
2. Highlight Marine, and press ENTER.
3. Press PAGE or QUIT to open the Map Page.
GPSMAP 376C Owner's Manual
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4. Press MENU. Highlight Set Up Page Layout, and press
ENTER.
5. Highlight Map with Sonar, and press ENTER.
Map Page with Split Screen
To resize the Map Page sonar split screen:
1. After showing the Sonar and Map Pages together in the split
screen as described in the previous steps, press MENU.
2. Highlight Size Split, and press ENTER.
3. Use the ROCKER to move the vertical double-arrow right or
left.
4. Press ENTER.
5. To stop resizing the screen, press QUIT. You can also press
MENU, highlight Stop Resizing, and press ENTER to stop
resizing the screen and retain the previous split setting.
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