[time-nuts] Capturing NMEA and TICC timestamp data in time-correlated way?

Mark Sims holrum at hotmail.com
Sun Sep 15 00:20:25 UTC 2019


Lady Heather should do the job.  It supports using a GPS device as the main input device and a TICC/counter as an auxiliary input device (/ei=  command line option).   Writing a .xml format log file will have all the data.  On a TICC you should connect chA to the 1PPS signal (and optionally the divided down 10 MHz to chB.

The next version of Lady Heather has a way to write a file with sawtooth corrected counter measurements.  Note that there are 12 ways to sawtooth correct the PPS measurement.  Only one way will work for a given combination of GPS/counter:
   add/subtract receiver sawtooth value
   apply the sawtooth correction to the previous/current/next counter reading
   apply the correction to the PPS reading or the PPS phase



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