[time-nuts] Question about SoundCard stability?

Bob Camp lists at rtty.us
Wed Oct 13 00:57:11 UTC 2010


Yes it is a reasonable expectation as long as you don't have a lot of drafts. A good TCXO can get down to sub 0.1 ppb over that period. 


On Oct 12, 2010, at 8:21 PM, David McClain wrote:

> Okay, perhaps I should rephrase the question... Is is reasonable to expect a TCXO to perform at 4e-9 over the FFT window period of about 87 sec? I can only imagine that the enormous (87 s) averaging period is making my measurements look so good.
> Dr. David McClain
> Chief Technical Officer
> Refined Audiometrics Laboratory
> 4391 N. Camino Ferreo
> Tucson, AZ  85750
> email: dbm at refined-audiometrics.com
> phone: 1.520.390.3995
> web: http://refined-audiometrics.com
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