[time-nuts] NCOCXO anyone?

Attila Kinali attila at kinali.ch
Thu Jul 28 17:54:09 EDT 2016


On Thu, 28 Jul 2016 14:06:09 -0700
Alex Pummer <alex at pcscons.com> wrote:

> On 7/28/2016 11:03 AM, Attila Kinali wrote:
> > On Fri, 22 Jul 2016 08:19:43 +0000 (UTC)
> > Bruce Griffiths <bruce.griffiths at xtra.co.nz> wrote:
> >
> >> No, the first one merely uses a pair of cascaded heterodyne PLLs
> >> as shown on p3 of the manual.
> > Ok. I tried to understand how this circuit works. While I can see
> > how a small and precise frequency offset can be produced, I do not
> > see how a small phase offset with fixed frequency can be produced.
> > At least not at the 100fs resolution level they are claiming in
> > the manual. Would someone be so kind and explain the working
> > of the circuit?

> if you send the circuit to me Attila, I would try to help you

Ah.. sorry. the link got cut off when i trimmed the mail.
It's the one on page three in the FemtoStepper manual:
http://www.spectratime.com/products/itest/clock-instruments/FemtoStepper/


			Attila Kinali

-- 
Malek's Law:
        Any simple idea will be worded in the most complicated way.



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