6
Appendix : Software Specification
NMEA Protocol
The software is capable of supporting the following NMEA message formats
NMEA Message Prefix
Format
Direction
SGPGGA
GPS fix data.
Out
SGPGLL
Geographic position Latitude / Longitude.
Out
SGPGSA
GNSS DOP and actives satellites
Out
SGPGSV
Satellites in view.
Out
SGPRMC
Recommended minimum specific GNSS data.
Out
SGPVTG
Velocity and track over ground.
Out
SGPZDA
Date and time.
Out
NMEA Extensions
The software is capable of supporting the following NMEA extensions:
NMEA Message Prefix
Format
Direction
$PNMRX100
Set serial port parameters.
In
$PNMRX101
Navigation initialization
In
$PNMRX103
NMEA message rate control
In
$PNMRX104
LLA navigation initialization
In
$PNMRX106
Set Datum.
In
$PNMRX107
NemeriX messages rate control
In
$PNMRX108
NMEA message sequence control
In
$PNMRX110
Fix Settings
In
$PNMRX111
Software Reset
In
$PNMRX112
Operating Mode Control
In
$PNMRX113
Fix and Extraction control
In
$PNMRX300
Almanac data transfer
In / Out
$PNMRX301
Ephemeris data transfer.
Out
$PNMRX302
Ionospheric correction
Out
$PNMRX303
UTC Time
Out
$PNMRX304
GPS Constellation Health Status
Out
$PNMRX600
SW Version report
Out
$PNMRX601
ISP mode
In
$PNMRX602
Flash content version report
Out
