Operation Manual
GPSMAP 400/500 Series Owner’s Manual  37
Conguring the Chartplotter
Conguring the Chartplotter
Use the Congure screen to congure unit settings.
Conguring System Settings
  To change general system settings from the Home screen, select 
Congure > System.
Simulator—turn Simulator mode on or off. Select Setup to set 
simulator options, such as simulated position, speed, and direction.
Beeper/Display
—select Beeper to set when the unit makes audible 
sounds. Select Display > Backlight to brighten or darken the 
backlight. Select Display > Color Mode to switch between Day 
mode and Night mode (page 4). 
Auto Power 
(GPSMAP 421/451/521/551/526/556, including “s” 
models)—turn Auto Power On or Off. When On is selected, the 
chartplotter will automatically turn on whenever power is applied, 
unless the chartplotter is turned off with the Power Key before 
power 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-accurate 
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GPS position information. However, when using WAAS or 
EGNOS, the device takes longer to acquire satellites.
Speed Filter
—select On, Off, or Auto. The speed lter averages 
the speed of your boat over a short period of time for smoother 
speed values.
System Information
—view system information and reset factory 
settings. The Save to Card button is provided as a troubleshooting 
tool; a Garmin Product Support representative may ask you to use 
this feature to retrieve data about your chartplotter.
Event Log—displays a list of system events. Select the event to 
view additional information.
Conguring Units of Measure
  To change units of measure from the Home screen, select 
Congure > Preferences > Units.
System Units—a global setting that denes individual units of 
measure at the same time: Statute (mh, ft, ºF), Metric (kh, m, ºC), 
Nautical (kt, ft, ºF), or Custom. Select Custom to individually 
dene units of measure for depth, temperature, distance, speed, 
elevation, volume, and pressure.
  NOTE: You must be receiving NMEA sonar depth data or using 
a Garmin sounder module to view depth and water temperature 
information.
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