[time-nuts] GPS 1 PPS accuracy limits
jimlux at earthlink.net
Wed Apr 21 01:59:20 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.
Do they have other requirements (Allan deviation? phase noise?)
Over what time span do they want 4E-11 accuracy? 1 second, 1000 seconds,
A synthesizer locked to a Stanford Research PRS10 (datasheet accuracy
5E-11) is in that ballpark.
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