DRAFT 3 – JANUARY 10, 2005 NOT FOR RELEASE
ORBITGPS USER GUIDE
SERIAL GPS RECEIVERS
14
When in SiRF mode, choose this option to switch to NMEA mode.
The GlobalPoint GPS application requires the user to confirm switching the mode of
operation from SiRF to NMEA. To cancel the Change Receiver Protocol command, tap
on “Cancel.”
The Change Receiver Protocol also allows the user to choose which NMEA sentences
are to be communicated from the Serial GPS receiver to the mobile computer. The
following NMEA sentences are supported by the Serial GPS receiver:
GSV - Set this NMEA sentence to the update interval for the GNSS Satellites in view.
GLL - Set this NMEA sentence to the update interval for the Geographic Position: Latitude
and Longitude.
RMC - Set this NMEA sentence to the update interval for the Recommended Minimum
Specific GNSS Data.
GSA - Set this NMEA sentence to the update interval for the GNSS DOP and Active
Satellites.
VTG - Set this NMEA sentence to the update interval for the Course Over Ground and
Ground Speed.
The default NMEA sentences for the Serial GPS receiver are GGA, GSV, GSA and RMC.