JRC JMA-3300 Series Installation Manual page 101

 Heading Correction
1 Open MAG Compass Setting
"Heading Correction" menu appears.
This item is set as to whether or not the heading bearing is to be corrected.
Switches between On and Off.
 Correct Value
1 Open MAG Compass Setting
"Correct Value" menu appears.
Press the cursor key or turn the [MULTI] control to correct bearing and angle.
The bearing and angle can be corrected between W9.9° and E9.9°.
Chapter 4 ADJUST MENU SETTINGS
- Heading Correction .
- Correct Value .
4.7 I/F DEVICE
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