GPS TabThe GPS tab provides a visual reference of satellite acquisition,receiver status, and accuracy. The sky view and signal strength barsgive an indication of what satellites are visible to the receiver andwhether they are being tracked. For more information about GPS,see pages 4-6.Main Menu—GPS TabWeather TabUse the Weather tab on the Main Menu to view individual weatherfeatures without turning all other weather features on or off. Forexample, you can select Storm Cells to view only storm cells onthe Map window that appears on the Weather tab. When you closethe Main Menu and return to the Map Page, all of your previouslyselected weather features still appear on the Map Page.NOTE: You must have a subscription to XM WX Weather, andthe GXM 30 antenna must be plugged into the USB port on theback of the unit to use features described in this section.Main Menu—Weather TabFor more information about XM Weather, see the “Using XM WXWeather” section beginning on page 95.8 GPSMAP 378/478 Owner’s ManualMAIn Menu > gPs tAb And WeAther tAb
