SkyTraq PX1172R - NMEA THS - True Heading and Status; THS Structure and Field Explanations

23
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THS–TrueHeadingandStatus
ActualvesselheadingindegreesTrueproducedbyanydeviceorsystemproducingtrueheading.Thissentence
includesa“Modeindicator”fieldprovidingcriticalsafetyrelatedinformationabouttheheadingdata,andreplacesthe
HDTsentence.
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Structure:
$GPTHS,x.x,a*hh<CR><LF>
123
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Example: 
$GNTHS,121.15.A*1F<CR><LF>
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Field Name Example Description
1 Heading 121.15 Heading,degreesTrue
2 Mode A Modeindicator
‘A’=Autonomous
‘E’=Estimated(deadreckoning)
‘M’=Manualinput
‘S’=Simulator
‘V’=Datanotvalid
3 Checksum 1F Checksum
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