Location Settings
NOTE:
You should not change the position format or the map datum coordinate system unless you are using a map or chart that specifies a different position format.
From the main menu, select .
- Position Format
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Sets the position format in which a location reading appears.
- Map Datum
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Sets the coordinate system on which the map is structured.
- Map Spheroid
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Shows the coordinate system the device is using. The default coordinate system is WGS 84.
- Heading
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Sets the direction references used in calculating heading information. The Auto Mag. Var. option sets the magnetic declination for your location automatically. The True option sets geographic north as the heading reference. The Grid option sets grid north (000º) as the heading reference. The User Mag. Var. option allows you to manually set the magnetic variation at your location.