GPS OptionsPress MENU twice to open the Main Menu. Use the ROCKER tohighlight the GPS tab. Press MENU to open the options menu.GPS Page Options MenuStart/Stop Simulator—starts and stops Simulator Mode, which ishelpful when learning how to use your unit.Enable/Disable WAAS—enables or disables WAAS capability. Seepage 123 of the “Appendix” for more information about WAAS.Track Up Skyview/North Up Skyview—orients the sky viewdisplay on the GPS page to North up or Track up.New Altitude—allows you to manually enter your altitude.New Location—allows you to enter a new location automatically orusing the map.GPS TipsWhile the receiver is gathering information, your location on themap might appear different from where you are actually located.As soon as the receiver gathers enough satellite information, yourproper location appears on the map.Any time you have traveled more than 600 miles with the GPSreceiver turned off, the receiver may take longer than normal toinitialize and find your location.The GPS receiver can lose satellite signals due to interference fromsuch items as buildings, tunnels, and heavy tree cover. Monitoringthe GPS status is recommended.To learn about GPS, see “Learning about GPS” on page 122.6 GPSMAP 378/478 Owner’s ManualGETTING STARTED > GETTING SATELLITE SIGNALS
