Simrad SU90 - HDM Heading, Magnetic; HDT Heading, True; MWD Wind Direction and Speed

Telegramformats
HDMHeading,magnetic
Thistelegramcontainsvesselheadingindegreesmagnetic.Thetelegramisnolonger
recommendedforuseinnewdesigns.
ItisoftenreplacedbytheHDGtelegram.
Format
$--HDM,x.x,M*hh<CR><LF>
Formatdescription
1––=talkeridentier
2HDM=telegramidentier
3x.x=headingindegrees,magnetic
HDTHeading,true
Thistelegramisusedtotransferheadinginformationfromagyro.
Format
$--HDT,x.x,T*hh<CR><LF>
Formatdescription
1––=talkeridentier
2HDT=telegramidentier
3x.x,T=heading,degreestrue
MWDWinddirectionandspeed
Thistelegramprovidesthedirectionfromwhichthewindblowsacrosstheearth's
surface,withrespecttonorth,aswellasthespeedofthewind.
Format
$--MWD,x.x,T,y.y,M,z.z,N,s.s,M*hh<CR><LF>
Formatdescription
1––=talkeridentier
2MWD=telegramidentier
3x.x,T=Winddirection,true,0to359degrees
4y.y,M=Winddirection,magnetic,0to359degrees
5z.z,N=Windspeedinknots
6s.s,M=windspeedinmeters/second
381293/A
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