> On Sep 14, 2019, at 5:20 PM, Mark Sims <[email protected]> wrote:
> 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

I’m interested in learning more about how this sawtooth comes about, how it’s 
predicted (so you can correct for it) and so on. Are there approachable 
documents/sites/source with this information? I’m still a time-nuts newb.

-A.


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