[time-nuts] Worst possible error on a rubidium

[Bob Camp]

Hi

For most Rb's most of the time, the answer is a few ppb (like say +/-3 ppb). Unfortunately there's no guarantee that it will fail to lock even with low probability / crazy stuff wrong. That opens up the window a bit...

Bob

On Jul 13, 2011, at 5:15 PM, Dr. David Kirkby wrote:

> If an old random 10 MHz Rubidium oscillator is working (i.e. powers up, and eventually locks), what is the maximum possible frequency error it could have?
> 
> Could it remained locked with an error of 1 part in 10^7, 10^8, 10^9, 10^10 etc?
> 
> I assume there are physical limits which would simply stop it functioning too far from the correct frequency, but don't have much clue what they are.
> 
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