[time-nuts] 5370A vs 5370B
magnus at rubidium.dyndns.org
Wed Mar 10 12:48:16 UTC 2010
Bob Camp wrote:
> Yes indeed, the period was measured with the two channels in the com mode and the reference
> into one of them. I hadn't considered the trigger offset issues and was expecting something
> sub-100 ps rather than 500 ps. Obviously I need to spend some "quality time" with this beast.
> Now I gotta figure out how to change the gate time :}......
If you do not fiddle with trigger levels, you _will_ loose accuracy. It
is a systematic error.
> It sounds like my oscillator buffer board is going to get butchered pretty soon.
I hope you mean modified. Applying a short at the right point improves
the situation, but you don't need that to get started. It is a
refinement that could wait for a little while.
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