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Magnetic Heading Reference
The GPS II
+
’s heading information can be displayed referencing magnetic north
(automatic or user-defined), true north, or calculated grid headings. The default setting
is automatic magnetic north, which is suitable for most applications.
To select a heading reference:
1. Highlight the ‘heading’ field (Fig. 81a), and press ENTER.
2. Select the desired heading preference, and press ENTER.
To enter a user-defined magnetic heading:
. 1. Select ‘User Mag’ and press ENTER (Fig. 81b).
2. Enter the degrees and direction of magnetic variation, and press ENTER.
Fig. 81a
Fig. 81b
gps ii + Mon (final?) 2/9/98 4:25 PM Page 81