Trimble Inc. 6248192-B1 Benutzerhandbuch

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SPSx80 Smart GPS Antenna User Guide     
81
NMEA-0183 Output     
A
HDT
Heading from True North
The HDT string is shown below, and Table A.7 describes the message fields.
$GPHDT,123.456,T*00
Table A.7
Heading from true north fields
Field
Meaning
0
message ID $GPHDT
1
Heading in degrees
2
T: Indicates heading relative to True North
3
The checksum data, always begins with *