[time-nuts] Does a frequency counter locked to GPS need to "warm up"?

Bob kb8tq kb8tq at n1k.org
Thu Feb 8 08:19:31 EST 2018


It depends a *lot* on the frequency counter. An old style “just count the number of
edges” device should be good to go pretty fast. One of the “fry an egg on it” interpolating 
counters that get into the 20 ps range may well need some time to stabilize. If you 
are doing ADEV runs, a couple hours of warmup would be a good idea.


> On Feb 8, 2018, at 2:33 AM, Chris Wilson <chris at chriswilson.tv> wrote:
>  08/02/2018 07:31
> Does  a  frequency  counter  connected  to a permanently running (Trimble Thunderbolt) GPS
> disciplined frequency standard need to warm up after switch on before readings settle?
> Just curious, thanks.
> -- 
>       Best Regards,
>                   Chris Wilson.
> mailto: chris at chriswilson.tv
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