[time-nuts] DMTD question

J. Forster jfor at quik.com
Thu Jun 18 14:41:57 EDT 2009


Hi Corby,

Are you still fixing sick FTS and HP Rb's?

Best,
-John

========

> Hi,
>
> The delay circuit consists of toggle switch increments of 1 thru 180
> degrees in binary steps (using differing lengths of miniature coax cable)
> as well as a fine adjustment that consists of a couple transistors with
> varactors. These are built into the unit inside sealed cases and with the
> unit in the rack with covers on the drift is minimal. (I don't ever turn
> the unit off)
>
> I have made plots of oscillator 1 against oscillator 2 and get a 1 second
> stability of  around 3.50 X10-13th.
>
> Will be making some more measurements between an HP 5065A and HP 5071A
> high stability.
>
> Corby






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