Operator's Manual

APPENDIX 4 DIGITAL INTERFACE
AP-8
HDG - Heading, deviation and variation
HDM - Heading magnetic
HDT - Heading true
$ -- HDG, x.x, x.x, a, x.x, a*hh<CR><LF>
Checksum
Magnetic variation, degrees E/W
Magnetic deviation, degrees E/W
Magnetic sensor heading, degrees
$ -- HDM, x.x, M*hh<CR><LF>
Checksum
Heading, degrees magnetic
$ -- HDT, x.x, T*hh<CR><LF>
Checksum
Heading, degrees true