MDC-7000/7900 Series Chapter 11 Appendix
0093169010-10 11-15
11.3 Details of the data input format
Check sum: All the data from $ to the check sum position * is calculated by exclusive-OR operation
and used as checksum.
Heading
THS True heading and status
Heading, degrees true M=Manual input invalid
II, IN, HE, HN, HC, GA, GP, GL, GN and SN are accepted.
Heading, degrees true
Note for IMO mode
II, IN, HE, HN, HC, GA, GP, GL, GN and SN are accepted.
HDG Heading, deviation and variation
Magnetic variation, degrees
Magnetic variation, degrees
Magnetic sensor heading, degrees
Note: This sentence is not accepted for IMO radar.
HDM
Heading, degrees magnetic
Note: This sentence is not accepted for IMO radar.
VTG
Course over ground and ground speed
Mode indicator A/P/D=Valid, E/M/S/N=Invalid
Speed over ground, km/h
Speed over ground, knots
Course over ground, degrees magnetic
Course over ground, degrees true