UniTraQ International Corp.
RoHS compliance
2007, Version 1.1
11
Eastern Star 7 series GT-3731R
GPS Receiver
9.6 VTG - COURSE OVER GROUND AND GROUND SPEED
The Actual course and speed relative to the ground.
Structure:
GPVTG,x.x,T,x.x,M,x.x,N,x.x,K,a*hh<CR><LF>
1 2 3 4 5 6
Example:
$GPVTG,89.68,T,,M,0.00,N,0.0,K,A*5F<CR><LF>
Field Name
Example
Description
1
Course
89.68
True course over ground in degrees (000.0 ~ 359.9)
2
Course
Magnetic course over ground in degrees (000.0 ~ 359.9)
3
Speed
0.00
Speed over ground in knots (000.0 ~ 999.9)
4
Speed
0.00
Speed over ground in kilometers per hour (0000.0 ~
1800.0)
5 Mode
A
Mode
indicator
‘N’ = not valid
‘A’ = Autonomous mode
‘D’ = Differential mode
‘E’ = Estimated (dead reckoning) mode
‘M’ = Manual input mode
‘S’ = Simulator mode
6 Checksum
5F
9.7 ZDA -TIME AND DATE
Structure:
$GPRMC,hhmmss.sss,dd,mm.yyyy, , ,xxx<CR><LF>
1 2 3 4 5 6 7
Example:
$GPZDA,104548.04,25,03,2004,,*6C<CR><LF>
Field Name
Example
Description
1
UTC time
104548.04
UTC time in hhmmss.ss format, 000000.00 ~ 235959.99
2
UTC time: day
25
UTC time: day (01 ... 31)
3
UTC time: month 03
UTC time: month (01 ... 12)
4
UTC time: year
2004
UTC time: year (4 digit year)
5
Local
zone
hour
Not being output by the receiver (NULL)
6
Local
zone
minutes
Not being output by the receiver (NULL)
7
6C 6C Checksum
9.8 BINARY MESSAGES
See
Binary Message Protocol User’s Guide
for detailed descriptions.
