[time-nuts] Fury Interface Board: 5MHz needed?

Tom Van Baak tvb at LeapSecond.com
Fri Nov 9 17:18:07 EST 2007

>>Is the worry, then, about the minor ambient temperature related
>>variations in steady-state oven current? Or something else?
> Tom the problem is easy to observe by cooling the OXCO with a fan and 
> watching the EFC change.
> I like to think of the issue in EFC steps. The OXCO's internal ground 
> bounce is about 100 DAC steps. A fresh off the shelf Z3816 main board adds 
> an additional 4mV of ground bounce so the total variation is a fraction of 
> 1000 DAC steps.
> Peter 

I'd like to verify this myself in a similar Z3816A; can you show
me how you got the 100 and 1,000 DAC step figures and also
how you measured the 4 mV value? Do you also have a Z3801A
you can measure?


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