BackMesa Pro Cellular GNSS Settings and Correction Service Instructions
29 Nov 2022
For accurate GPS/GNSS positioning with the Mesa Pro, we recommend using our Geode receiver (which can provide 60cm 2DRMS or better accuracy).
Otherwise, the Mesa Pro uses Qualcomm's gpsOneXTRA® correction service built into the cell/GNSS modules to improve positional accuracy and time-to-first-fix. In testing, this service has been shown to provide 3 to 5 meters typical (RMS) accuracy.
When the Mesa Pro is connected to an LTE cellular network, the modules automatically download the correction data file from a web server provided by Qualcomm every 24 hours. The correction benefits can last up to seven days, however you must connect to an LTE network at least every three days to maintain that accuracy, or else typical (RMS) accuracy will be reduced to 5 to 8 meters without corrections.
To use the gpsOneXTRA correction service, connect the Mesa Pro to an LTE cellular network:
- Ensure you have a data-only SIM card.
- Power off the Mesa Pro.
- Insert the SIM card.
- Turn on the Mesa Pro.
- Verify the Mesa Pro has an LTE connection by checking the Network & Internet settings.
The Mesa Pro will update its correction file within a few minutes of obtaining an LTE connection. The Mesa Pro must be outside under open sky sometimes up to 25 minutes before providing a reasonable position. The position can be accessed by apps through the Windows Location Services. An NMEA Port may be limited or not functional even if using a utility such as GPSComplete GPSReverse.
