[time-nuts] Measuring gpsdo vs itself

[Brian Kirby]

I would measure the counter both ways to characterize it, and you may 
learn a little more about how it reacts.

Use its internal oscillator for the counter, apply the same 1PPS signal 
to both inputs.

Use an external time base for the counter, apply the same 1 PPS to both 
inputs - make sure the timebase is not related to the 1 PPS. Then 
repeat, and use  a common oscillator for all.

You may also introduce delay into the stop channel and see what that 
causes and any differences, etc.

Log your results in your time-nuts log book, you may have a reason to 
look at it again, down the road.



Brian
KD4FM