GPSMAP 400/500 Series Owner’s Manual 41Configuring the ChartplotterConfiguring the ChartplotterUse the Configure screen to configure unit settings.Configuring System SettingsTo change general system settings from the Home screen, selectConfigure > System.Simulator—turn Simulator mode (page 6) on or off. Select Setupto set simulator options, such as simulated position, speed, anddirection.beeper/display—select beeper to set when the unit makes audiblesounds. Select display > backlight to brighten or darken thebacklight. Select display > Color Mode to switch between Daymode and Night mode (page 4).auto Power (GPSMAP 431/441/531/541/536/546, including “s”models)—turn Auto Power On or Off. When On is selected, thechartplotter will automatically turn on whenever power is applied,unless the chartplotter is turned off with the Power Key beforepower is lost.gPS—view GPS satellites.• Skyview—view the GPS satellite constellation.• waaS/EgNOS—toggle WAAS (in North America) or EGNOS(in Europe) on or off. WAAS/EGNOS can provide more-accurateGPS position information. However, when using WAAS orEGNOS, the device takes longer to acquire satellites.• Speed filter—select On, Off, or auto. The speed filter averagesthe speed of your boat over a short period of time for smootherspeed values.System information—view system information and reset factorysettings. The Save to Card button is provided as a troubleshootingtool. A Garmin Product Support representative may ask you to usethis feature to retrieve data about your chartplotter.Event Log—displays a list of system events. Select the event toview additional information.Configuring Units of MeasureTo change units of measure from the Home screen, select Configure> Preferences > Units.System Units—a global setting that defines individual units ofmeasure at the same time: Statute (mh, ft, ºf), Metric (kh, m, ºC),Nautical (kt, ft, ºf), or Custom. Select Custom to individuallydefine units of measure for depth, temperature, distance, speed,elevation, volume, and pressure.