[time-nuts] Switching oscillators

Magnus Danielson magnus at rubidium.dyndns.org
Mon Dec 10 00:32:25 UTC 2012


On 12/10/2012 12:45 AM, Bob Camp wrote:
> Hi
>
> A runt pulse during the switch over might well do some odd things.

Exactly. For instance, two FFs holding the state may not both trigger, 
so inconsistent state may occur. I've had one of those problems, turned 
out to be evil cross-talk in that case, but never the less, runt-pulses 
can be evil. Hence doing reset after switching.

Cheers,
Magnus



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