[time-nuts] Very stable synthesizer, alternative to PTS(Programmed Test Sources) x10 or 040?

[Eric Williams]

We use an Agilent 8644B where I work as the master oscillator for an
electron cyclotron storage ring.  Electrons at 2GeV don't like to be pushed
around and are very sensitive to phase noise, so the feedback loop that
adjusts the frequency uses the FM input for fine adjustment.
--
eric


On Wed, Jul 10, 2013 at 3:57 AM, Bob Camp <lists at rtty.us> wrote:

> Hi
>
> Having hooked up a 9854 and tried it with realistic settings - it's not
> that great. If you run it at "magic" frequencies (where it's essentially
> just a divider) it looks like a divider.
>
> Bob
>
> On Jul 9, 2013, at 5:03 AM, Anders Time <anderstime at gmail.com> wrote:
>
> > Thanks a lot for the input.
> > I have been looking at the Fluke 6160b, but I thought that there might be
> > something as good out there that is not 40years old!
> > I want to use the synthesizer as a flexible offset source for beat
> > frequency measurements. So the frequency range is 5 to 30MHz approx.
> > I read Rubiola et al. "Phase noise and amplitude noise in DDS" yesterday
> > and thinks that it might be worth a try to test the AD9854 or AD9912 to
> see
> > if it is good enough. If I understand the paper right they get really
> good
> > results. Is there any one with experience?
> > Thanks Anders
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