Forums - NMEA sentence definitions

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NMEA sentence definitions
Join Date: 22 Feb 12
Posts: 2
Posted: Wed, 2012-02-22 11:57

What is the format of the special Gobi $PQXFI sentence?

The $GPRMC sentence on the GOBI device I am using (in a Motion Computing tablet computer) does not emit values for Speed or Course.

Docs for all the NMEA (the actual Qualcomm implementation not the generic docs at would be good to have.



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Alan_Soloway Moderator
Join Date: 2 Jun 11
Posts: 358
Posted: Mon, 2012-02-27 14:11

Hello Brian,

The $PQXFI provides diagnostic information which has no additional value at the user level.  This is used by our GPS Team to support remote debugging.

The other sentences follow the NMEA standard, so there are no additional documents required by Qualcomm to explain those formats.

I am not sure why you would not get complete NMEA data including Speed and Course. Are you testing in clear sky conditions?  If you can provide a capture of the NMEA sentences, I can try to determine if there is anything wrong.

Regards, Alan

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