Hi There are tables made for low vibration test setups. They are (essentially) a big heavy cast iron table sitting on air cushions under each of the legs. Not a great approach for a low G OCXO ….
Bob > On Jun 27, 2020, at 8:09 PM, Neville Michie <[email protected]> wrote: > > An old trick I learned from an Australian standards lab was to make a > vibration free > table with a 2 foot by 2 foot by 2 inch paving slab supported by a partly > inflated > wheel barrow inner tube. > I tried it recently for measurements of force in an electric clock movement > and it cut out the background vibration in a spectacular way. > cheers, Neville Michie > >> On 27 Jun 2020, at 22:02, Michael Wouters <[email protected]> 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 >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
