[time-nuts] GPSDO and PPS measurement precision
attila at kinali.ch
Fri Jun 3 11:14:35 EDT 2016
With all the talk about GPSDOs going on in the last couple of months,
I started to wonder how much precision in the measurments is actually
needed. On one hand, we have the old GPSDO designs, like Shera's,
that offer a resolution in the 40ns range. On the other hand, we
have modern designs, that measure the PPS down to <100ps.
How much does the accuracy/stability improve using higher resolution?
Does anyone have data on that? If not, would someone be willing to
measure one of the better GPSDO's by artifically decreasing its
resolution in software and see what happends to the ADEV/MDEV/TDEV?
I am willing to give a hand with the data analysis, but I don't have
the equipment to do such a measurement.
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use without that foundation.
-- Miss Matheson, The Diamond Age, Neil Stephenson
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