SETTING UP AND USING SONARThis section covers the additional sonar options for the GPSMAP276C when used in conjunction with a GSD 20 Sounder Module.Read the GSD 20 Sounder Module Installation Instructions toproperly install the sounder module. When you turn on yourGPSMAP 276C, the Sounder Module automatically turns on.NOTE: You MUST have a GSD 20 installed and connected toyour GPSMAP 276C to use the sonar features.The Sonar page is added to the end of the page sequence when youare in Marine Mode. To view the Sonar page, press PAGE or QUITrepeatedly until it is displayed.Showing Sonar on the Map PageYou can change the layout of the Map page to display a split screento show the sonar on the Map page. You must be in Marine Mode touse the sonar feature.To display the Sonar page on the Map page:1. Press and hold PAGE. Highlight Marine and press ENTER.2. Press PAGE or QUIT to display the Map page.3. Press MENU. Use the Rocker key to highlight Set Up PageLayout and press ENTER.4. Highlight Map with Sonar and press ENTER.Map Page with Split ScreenTo resize the Map page sonar split screen:1. After displaying the Sonar and Map page together in the splitscreen, as described in the previous steps, press MENU.2. Highlight Size Split and press ENTER.3. Use the Rocker key to move the vertical double-arrow Rightor Left until the screen is divided how you want it.4. Press ENTER to complete the size split.5. To stop resizing the screen, simply press QUIT. You can alsopress MENU, highlight Stop Resizing, and press ENTER tostop resizing the screen and retain the previous split setting.GPSMAP 276C Owner’s Manual 91SETTING UP AND USING SONAR > SHOWING SONAR ON THE MAP PAGE
