66 GPSMAP 640 Owner’s ManualAutomotive Mode: Advanced ConfigurationAutomotive Mode: AdvancedAdvancedConfiguration1. Touch Tools > Settings.2. Touch the setting you want to change.3. Touch the button under the setting name to change it.Changing the System SettingsTouch tools > Settings > System.GPS Simulator—turn on the simulator to turn off the GPS andsimulate navigation, and to save battery power.usage Mode—change to marine mode.units—change units of measure to Kilometers or Miles.Keyboard—touch QWeRtY for a layout similar to a computerkeyboard, or touch aBC for an alphabetical layout.about—display the GPSMAP 640 software version number,the unit ID number, and the audio version number. You need thisinformation when you update the system software or purchaseadditional map data (see page 73).Restore—restore the original system settings.Changing the Navigation SettingsTouch tools > Settings > Navigation.Route Preference—select a preference for calculating your route:Faster time—to calculate routes that are faster to drive but canbe longer in distance.Shorter Distance—to calculate routes that are shorter indistance but can take more time to drive.off Road—to calculate point-to-point routes (without roads).avoidances—select the road types you want to avoid on yourroutes.Restore—restore the original navigation settings.Adjusting the Display SettingsTouch tools > Settings > Display.Color Mode—select Daytime for a light background, Nighttimefor a dark background, or auto to automatically switch betweenthe two.Screen Shot—turn on Screen Shot mode. Touch to take ascreen shot. The picture bitmap file is saved in theGarmin\Screenshot folder on the GPSMAP 640 drive.•••
