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What can I do if Precis GPS RTK board (BX305) cannot position?

The problem can be diagnosed by following procedure.

-Check whether indicator lights are blinking. If not, then check power supply system, e.g. whether the wire is well connected.

-Check whether Precis output NMEA data. If not, configure output of Precis with configuration tools.

-Check NMEA data, if NMEA does not contains valid data, e.g. $GPGGA,051502.00,,,,,0,00,99.99,,,,,,*7B, then check whether antenna is connected to Precis.

-Check NMEA sentence $GPGGA, if the GPS status section in $GPGGA sentence is 1, and then it means Tersus/Precis is working in point position mode, then check the status of RTCM data stream. If GPS status section is 4 or 5, it means Tersus/Precis is working in relative positioning mode and everything goes well. If the GPS status is 4, then you get centimeter level RTK fixed solution. If the GPS status is 5 then you get sub-meter level RTK float solution.

Remark: the seventh section in $GPGGA sentence in the GPS status, which is after ‘E’ or ‘W’.e.g. $GPGGA, 092204.999 ,4250.5589, S, 14718.5084 ,E ,1 ,04 ,24.4 ,M, 19.7,M ,,, 0000*1F.



If you have further questions, feel free to contact us to info@tersus-gnss.com or visit our official website www.tersus-gnss.com

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