ST2276
Scientech Technologies Pvt. Ltd.
39
$GPHDT :
Heading, True.
Actual vessel heading in degrees true produced by any device or system producing
true heading.
$--HDT, x.x,T
x.x = Heading, degrees True
$GPMSK :
Control for a Beacon Receiver
$GPMSK, 318.0, A, 100, M, 2*45
where :
318.0 A Frequency to use
A Frequency mode, A = auto, M = manual
100 Beacon bit rate
M Bitrate, A=auto, M=manual
2 frequency for MSS message status (null for no status)
*45 checksum
$ GPMSS :
Beacon Receiver Status
Example 1: $GPMSS, 55, 27,318.0, 100,*66
Where :
55 signal strength in dB
27 signal to noise ratio in dB
318.0 Beacon Frequency in KHz
100 Beacon bitrate in bps
*66 checksum
Example 2 : $GPMSS,0.0,0.0,0.0, 25,2*6D
Field
Example
Comments
Sentence ID
$GPMSS
Signal strength
0.0
Signal strength (dB 1uV)
SNR
0.0
Signal to noise ratio (dB)
Frequency
0.0
Beacon frequency (KHz)
Data rate
25
Beacon frequency (BPS)
Unknown field
2
Unknown field sent by GPS receiver
used for test
Checksum
*6D
HiK-Consulting