GPSMAP® 500 Series Owner’s Manual confIGurInG the unItconfIGurInG the unItUse the Configure screen to configure unit settings.Configuring System SettingsTo change general system settings, from the Home screen, selectConfigure > System.Simulator—turn Simulator Mode on or off and set Simulator Modeoptions. (If you set the unit into a Store Demonstration mode duringthe initial unit setup, this setting will be named Demo.)Language—select the on-screen language.beeper/Display—select beeper to set when the unit makes audiblesounds. The three settings are Off, Alarms Only (default), and On(keys and alarms). Select Display to switch between Day or Nightmodes and brighten or darken the backlight.GPS—view GPS satellites, turn WAAS/EGNOS on or off, andinitialize the GPS receiver.System Information—view system information and restore factorysettings.Event Log—shows a list of system events.Overlay Numbers—set the styles for Wind and Next Turn numbers.Changing Units of MeasureTo change units of measure, from the Home screen, selectConfigure > Units.System Units—this is a quick global setting that defines mostof the individual units of measure listed below at once. Statute(mh, ft, ºF), Metric (kh, m, ºC), or Nautical (kt, ft, ºF).Depth—individually set the units of measure for depth to Feet (ft),Fathoms (fa), or Meters (m).Temperature—individually set units of measure for temperature toFahrenheit (ºF) or Celsius (ºC).NOTE: You must be receiving NMEA Sonar depth data or using aGarmin sounder module to view depth and temperature information.Dist, Spd, Elev—individually set the units of measure for distance,speed, and elevation readings.Heading—set the reference used in calculating heading information.Position—change the coordinate system in which a given locationreading appears. The default format is hdddºmm.mmm'. Onlychange the position format if you are using a map or chart thatspecifies a different position format.Time—set the time format (12 hour, 24 hour, or UTC time format),time zone, and indicate whether to use daylight saving time.