[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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