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>
GPS-41UMR
GPS-41UMF
Field
1
2
3
4
5
Example
221.0
224.3
016.0
0029.6
A
6
1F
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
‘N’ = Data invalid
‘A’ = Autonomous
‘D’ = Differential
‘E’ = Estimated
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
1
2
3
4
5
6
7
Example
104548.04
25
03
2004
6C
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
Not being output by the receiver (NULL)
Local zone minutes
Not being output by the receiver (NULL)
Checksum
Binary Messages
Please refer to DS-41COM,
Binary Message Protocol Guide
for detailed descriptions on configuration of the
NMEA string.
DS-41UM-1 Feb ’06
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