[time-nuts] GPSDO control loops and correcting quantization error
Bob Camp
lists at rtty.us
Sat Sep 15 02:03:07 UTC 2012
Hi
Very few VCXO's have reference outputs. Some OCXO's have reference outputs. The gotcha there is the oven current. You can easily get multiple mV sort of changes in the OCXO ground voltage as the oven current cycles over a fairly narrow range. That significantly impacts the usefulness of the reference, since they share a common ground.
Bob
On Sep 14, 2012, at 6:10 PM, Don Oconnor <eGunk at wowway.com> wrote:
> Hello all,
>
>
>
> Most voltage controlled XOs have a voltage reference output. Is it necessary for the DAC output / frequency control input, to track this voltage reference output?
>
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> Thank You
>
>
>
> Don O'Connor
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