GPSMAP 400/500 Series Owner’s Manual 5Getting StartedUsing the KeypadPOWER/BACKLIGHTMENUROCKERSELECTHOMERANGE (-/+)MARKPOwER/baCKLigHT—Press and hold to turn the unit on or off.Press and release to adjust the backlight and day and night modes.RaNgE (-/+)—Press to adjust the range of the sonar. Press to zoomin or out on a chart. Press to page up or down on lists.ROCKER—Press to adjust the range of the sonar, to zoom in or outon a chart, to page up or down on lists, to scroll the map, or to adjustthe backlight level.MaRK—Press to mark a waypoint at your current location.SELECT—Press to select highlighted items.HOME—Press to return to the Home screen.MENU—Press to access additional settings and configurationoptions. Press to return to the previous screen when indicated.Acquiring GPS Satellite SignalsWhen you turn on the unit, the GPS receiver must collect satellitedata and establish the current location. When the unit acquiressatellite signals, the signal strength bars at the top of the Homescreen are green . When the unit loses satellite signals, thegreen bars disappear and the position icon displays a flashingquestion mark.For more information about GPS, visit the Garmin Web site atwww.garmin.com/aboutGPS.Using Simulator ModeSimulator mode turns the GPS receiver off for use indoors or forpractice. The unit does not track satellites in simulator mode. WArnInGDo not try to navigate using simulator mode, because the GPSreceiver is turned off. Any satellite signal-strength bars shown areonly simulations and do not represent the strength of actual satellitesignals.
