GPHDT

NMEA heading log

Platform:

OEM719, OEM729, OEM7500, OEM7600, OEM7700, OEM7720, PwrPak7, CPT7, CPT7700, SMART7

This log contains actual vessel heading in degrees True (from True North). See also a description of heading in the HEADING2 log. You can also set a standard deviation threshold for this log, see the HDTOUTTHRESHOLD command.

You must have an ALIGN capable receiver to use this log.

The GPHDT log can only be logged using the ONCHANGED trigger. Other triggers, such as ONTIME are not accepted.

If the NMEATALKER command is set to AUTO, the talker (the first 2 characters after the $ sign in the log header) is set to GP (GPS satellites only), GL (GLONASS satellites only), GA (Galileo satellites only), GQ (for QZSS satellites only), GB/BD (for BeiDou satellites only) or GN (satellites from multiple systems).

Message ID: 1045

Log Type: Asynch

Recommended Input:

log gphdt onchanged

Example 1 (GPS only):

$GPHDT,75.5664,T*36

Example 2 (Combined GPS and GLONASS):

$GNHDT,75.5554,T*45

Field	Structure	Description	Symbol	Example
1	$GPHDT	Log header		$GPHDT
2	heading	Heading in degrees	x.x	75.5554
3	True	Degrees True	T	T
4	*xx	Check sum	*hh	*36
5	[CR][LF]	Sentence terminator		[CR][LF]