[time-nuts] Vibration isolation of quartz oscillators

[Adrian Godwin]

Would a mechanical image-stabilisation system work ?

https://en.wikipedia.org/wiki/Image_stabilization#Stabilizing_the_camera_body


On Sat, Jun 27, 2020 at 7:58 PM Tom Van Baak <tvb at leapsecond.com> wrote:

> Michael,
>
> These are really good oscillators so in addition to guessing what sounds
> like a good solution verify with actual vibration / acceleration
> experiments.
>
> Last year I tested some Oscilloquartz BVA's for axis sensitivity to
> acceleration. It's quite easy. Some plots here:
>
> http://leapsecond.com/pages/bva-rotate/
>
> At the end of that page are two videos showing the Arduino-driven
> stepper motor rotating platform that I used. If anyone can't view the
> videos let me know off-list (my email is tvb at leapsecond.com).
>
> If you end up doing something similar I would very much like to see how
> your results compare.
>
> Thanks,
> /tvb
>
>
> On 6/27/2020 5:02 AM, Michael Wouters wrote:
> > I have three Oscilloquartz 8607-Bs that I'm rehousing.
> >
> > In their former life they were part of the frequency synthesis chains
> > for H-masers and they hung vertically from a rubber suspension that was
> > presumably intended to provide vibration isolation. Unfortunately, the
> > person responsible for this has long since retired so is no longer
> > around to ask questions of.
> >
> > In the experiment I will be averaging over  100 s, which suggests to
> > me that very low frequencies are what I need to filter out (if at
> > all), and I am skeptical that the rubber will do this. Space is tight
> > so I am wondering
> > whether I should simply ditch the isolation.
> >
> > What do other people do with their quartzes ? I thought I should ask
> > for some advice before attempting measurements.
> >
> > Cheers
> > Michael
> >
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