[time-nuts] ADEV test setup [was GPSDO TC & Damping]

Magnus Danielson magnus at rubidium.dyndns.org
Sat Jan 10 09:27:12 UTC 2009


Tom Van Baak skrev:
>> I'd like to see a similar test conducted against a local Cs clock (and/or
>> maser), just to get everything on one graph.
>>
>> -- john, KE5FX
> 
> It's on the list.
> 
> One earlier idea was to measure tc=1 10 100 1000 10k
> simultaneously with 5 Thunderbolts, but I suspected that
> unit to unit variations among the GPSDO would partially
> cloud the results. So that's why I did back-to-back runs
> using the same TBolt, same reference, and same TIC for
> each run. All I changed was the TC in the GUI, figuring
> that was the safest thing to do.

You could do thia, but in a rotating scheme such that you end up having 
measured all thunderbolts for all TCs. That would help decorrelate 
individual differences among the thunderbolts.

Cheers,
Magnus



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