[time-nuts] GPS 1 PPS accuracy limits
magnus at rubidium.dyndns.org
Tue Apr 20 20:07:03 UTC 2010
life speed wrote:
> Time Nuts;
> I have a customer request for a microwave frequency synthesizer with extreme accuracy requirements;
> 4 X 10^-11, or 0.04 PPB. Obviously this is way out of quartz oscillator territory.
> Is GPS 1 pulse-per-second useable, or do they need an atomic clock?
> Maybe they don't realize what they are spec'ing.
I really think you should ask them to motivate themselves on that spec,
the intended use etc. They can certainly get a spec like that, but is it
what they need?
You certainly want something like a GPS clock to feed that thing if they
really need that level of accuracy. Or do they only need that level of
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