[time-nuts] Sneaky Errors

Hal Murray hmurray at megapathdsl.net
Thu Oct 20 13:27:58 EDT 2011


> Yup, I agree..  If I could count on the Tbolt output going dead if there's a
> problem, that would be wonderful, but my worst fear is that it would keep on
> going but be wrong enough to matter. We are calibrating other equipment
> against the TB output to 1ppm so the TB would have to be pretty far off
> before it would matter, but I could see it happening. 

1 ppm is pretty easy to detect.

How about something like a counter and a PC.  Use the crystal in the counter 
as a 3rd opinion.  You don't care if the crystal is off a bit.  You are just 
assuming it is reasonably stable.

Of course, now you have added a PC to the system.


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







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