System settings allow you to customize the GPS and select units of measure.
To change system settings, select (Menu >) Settings > System.
Remote GPS - opens the Remote GPS Information page.
Disconnect Bluetooth GPS on Phone Call (not available on all phones) - select Always, When not routing, or Never.
Distance/Speed, Direction, Elevation, Depth, and Temperature - select a unit of measure.
Location Format - select a grid format. If you select User UTM Grid, enter the appropriate grid information.
Datum - select a map datum.
Device has Keypad - Select Yes if your device has a traditional phone keypad.