GPS-41MLR
GPS-41MLF
GPS Receiver Module
VTG - COURSE OVER GROUND AND GROUND SPEED
Velocity is given as course over ground (COG) and speed over ground (SOG).
Format:
GPVTG,<1>,T,<2>,M,<3>,N,<4>,K,<5>*<6><CR><LF>
Example:
$GPVTG,221.0,T,224.3,M,016.0,N,0029.6,K,A*1F<CR><LF>
Field
Example
221.0
224.3
016.0
0029.6
A
Description
True course over ground, 000.0 ~ 359.9 degrees
Magnetic course over ground, 000.0 ~ 359.9 degrees
Speed over ground, 000.0 ~ 999.9 knots
Speed over ground, 0000.0 ~ 1800.0 kilometers per hour
Mode indicator
1
2
3
4
5
‘N’ = Data invalid
‘A’ = Autonomous
‘D’ = Differential
‘E’ = Estimated
6
1F
Checksum
ZDA TIME AND DATE
Format:
$GPZDA,<1>,<2>,<3>,<4>,<5>,<6>*<7><CR><LF>
Example:
$GPZDA,104548.04,25,03,2004,,*6C<CR><LF>
Field
Example
104548.04
25
Description
UTC time in hhmmss.ss format, 000000.00 ~ 235959.99
UTC time: day (01 ... 31)
UTC time: month (01 ... 12)
UTC time: year (4 digit year)
Local zone hour
1
2
3
4
5
03
2004
Not being output by the receiver (NULL)
6
7
Local zone minutes
Not being output by the receiver (NULL)
Checksum
6C
Binary Messages
Please refer to DS-41COM, Binary Message Protocol Guide for detailed descriptions on configuration of the
NMEA string.
DS-41ML-1 Feb ’06
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