NavSpark PX1175RD Manual page 22

VTG – Course Over Ground and Ground Speed
The actual course and speed relative to the ground.
Structure:
GPVTG,x.x,T,,M,x.x,N,x.x,K,a*hh<CR><LF>
1 2 3
Example:
$GNVTG,000.0,T,,M,000.0,N,000.0,K,D*16<CR><LF>
Field Name
1 Course
2 Speed
3 Speed
4 Mode
5 Checksum
ZDA – TIME AND DATE
UTC, day, month, year and local time zone
Structure:
$GPZDA,hhmmss.sss,xx,xx,xxxx,xx,xx*hh<CR><LF>
1 2 3 4
Example:
$GNZDA,094242.000,27,09,2023,00,00*4E<CR><LF>
Field Name
1 UTC time
2 UTC Day
3 UTC Month
4 UTC Year
5 Local zone hour
6 Local zone minutes
7 Checksum
4 5
Example Description
000.0 True course over ground in degrees (000.0 ~ 359.9)
000.0 Speed over ground in knots (000.0 ~ 999.9)
000.0 Speed over ground in kilometers per hour (000.0 ~ 1800.0)
D Mode indicator
'A' = Autonomous mode
'D' = Differential mode
'E' = Estimated (dead reckoning) mode
'M' = Manual input mode
'N' = Data not valid
'P' = Precise
'S' = Simulator mode
16
5 6 7
Example Description
094242.000 UTC time in hhmmss.ss format (000000.00 ~ 235959.999)
27 UTC time: day (01 ~ 31)
09 UTC time: month (01 ~ 12)
2023 UTC time: year (4 digit format)
00 Local zone hours (00 ~ +/- 13)
00 Local zone minutes (00 ~59)
4E Checksum
22