GettInG StartedUnit OverviewThe GPSMAP 378/478 is an all-in-one, versatile color chartplotter and automobile navigator—perfect for land or water. This portable GPSnavigator features a 256-color TFT display that is easy to read in bright sun and includes built-in g2 cartography (GPSMAP 478) or built-inlake cartography (GPSMAP 378), and preloaded City Navigator NT® to provide you with automatically generated turn-by-turn directions.With the optional GXM 30 antenna and a subscription to XM WX Satellite Weather, users have constant access to NEXRAD radar, lightning,wind speed, wave direction, and more. In addition, the GPSMAP 378/478 offers XM Satellite Radio capabilities featuring more than 160digital channels of commercial-free music; more than 30 channels of news, sports, talk, and entertainment; and more than 20 dedicatedchannels of XM Instant Traffic & Weather.External powerconnector underweather capUSB/GXM 30antenna connectorunder weather cap Slot for optional data cardBattery pack. Press tab downto remove battery pack forreplacement, if necessary.Backlit keypad for easy nighttime operationGPS antenna256-Color TFT displaywith backlightingDetachable GPS antennacollapses for storage.Be sure the antenna sup (as shown here)to receve satelltesignals. See the“Appendx”,page 122, fornstructons onremoving theantenna.Seral number Headphone/stereo jackunder weather capGPSMAP 378/478 Owner’s Manual 1gettIng stArted > unIt overvIeW
