406388/B
279
Description
1$—:Talkeridentier
2HDG:Datagramidentier
3x.x:Heading(DegreesMagnetic)
4z.z,a:Deviation(DegreesMagnetic),East/West
E=East
W=West
5r.r,aVariation(DegreesMagnetic),East/West
E=East
W=West
6*hh:Checksum
NMEAHDMdatagram
TheNMEAHDMdatagramprovidesvesselheadingindegreesmagnetic.Thedatagram
formatisnolongerrecommendedforuseinnewdesigns.ItisoftenreplacedbytheNMEA
HDGtelegram.
Format
$--HDM,x.x,M*hh<CR><LF>
Description
1$—:Talkeridentier
2HDM:Datagramidentier
3x.x,M:Heading(DegreesMagnetic
4*hh:Checksum
Datagramformats