[time-nuts] Phase noise vs warmup or time

Hal Murray hmurray at megapathdsl.net
Tue Dec 29 20:43:06 UTC 2009


dk4xp at arcor.de said:
> What we already have seen is that crystals from the same production
> run may yield up to 15 or 20 dB worse phase noise at 100 Hz than the
> best. (in the same oscillator) 

If I have several crystals and I want to find the ones with good phase noise, 
do I have to let them run in their ovens for a week/month, or can I just turn 
them on and measure the phase noise?


-- 
These are my opinions, not necessarily my employer's.  I hate spam.






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