GPSMAP 392/398/492/498 Owner’s Manual 65M AIN MENU > SYSTM (SYSTEM) TABSystm (System) TabThe System tab controls system setting for beeper, speed filter,languages, system mode, and simulator controls, restores factorysettings, shows software version, and prepares software updatecards.The following settings are available:• Beeper—Off, Alarms Only, Key and Alarm: controls audiblebeeps.• Speed Filter—Off, Auto, On: averages speed readings.• Language—sets the language for the unit’s on-screen text.• Automatic Backlight—adjusts the backlight based on thebuilt in sunrise and sunset information.• System Mode—sets Normal or Simulator Mode. The Setupbutton allows you to simulate navigation.• Set Position*—sets your location while in Simulator Mode.See page 3 for additional instructions.• Track Control*—Auto Track, User Track: controls yourheading in Simulator Mode.• Track*—sets your heading in Simulator Mode.• Speed*—sets your speed in Simulator Mode.• Transducer*—sets a transducer type.* These fields are only available when the unit is in Simulator Mode.The following options are also available from the Systm tab:• System Information—shows the unit’s software, basemapversion, and electronic serial number.• Prepare SW Update Card—prepares a data card to acceptsoftware updates from your computer through the data cardprogrammer.Press ADJ/MENU for the following options:• Factory Defaults—restores all settings to Garmin’s originalsetup values for the entire unit.