Hello Tom, (and thanks everyone for your advice) I want to do the same as you: rack mount the oscillators. Elaborate vibration isolation solutions are not possible in the available space viz 3 to 4 RU.
I have the manufacturer’s test data for the oscillators, plus my own test data, so I think I will just make a trial test with the existing isolation system and then see if there any problems when in the rack. Cheers Michael On Tue, 30 Jun 2020 at 2:52 am, Tom Knox <act...@hotmail.com> wrote: > I am enjoy this Nth degree Vibration Isolation discussion. Countless > amazing tables where I work. > I have been focused on more practical solutions for Vibration isolation of > my rack mount oscillators in my home lab, and I think at that level in some > ways are focused on eliminating resonances as well as trading one frequency > for another taking higher intensity "square waves" and dissipating them > over time. > Any thoughts? > Cheers; > > Tom Knox > > SR Test and Measurement Engineer > > Ascent Concepts and Technology > Much > 4475 Whitney Place > > Boulder Colorado 80305 > > 303-554-0307 > > act...@hotmail.com > > "Peace is not the absence of violence, but the presence of Justice" Both > MLK and Albert Einstein > > ________________________________ > From: time-nuts <time-nuts-boun...@lists.febo.com> on behalf of > Poul-Henning Kamp <p...@phk.freebsd.dk> > Sent: Monday, June 29, 2020 12:16 AM > To: Discussion of precise time and frequency measurement < > time-nuts@lists.febo.com>; ed breya <e...@telight.com> > Subject: Re: [time-nuts] Vibration isolation of quartz oscillators > > -------- > ed breya writes: > > > The nicest optical bench I've ever seen in person, was in one of our > > labs many years ago. It was a huge, precisely flat polished granite slab > > about 6-8" thick, about 4x8' or maybe 5x10', mounted on active-leveling > > pneumatic bladders. It was loaded with thousands of threaded inserts, > > uniformly spaced on a grid, for mounting optical devices and equipment. > > It is worth foot-noting here, that at that level of quality they > are usually not made from natural granite, but rather from > "epoxy-granite", which can be designed to have very low temp-co. > > > There are lower-grade type platforms available, commonly called "optical > > breadboards," that are made from thick sheets of aluminum or stainless > > steel, [...] > > and these obviously have a sizeable temp-co, so the money you saved on > your bench you get to spend on your air-con. > > They are a lot easier to move around though. > > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > p...@freebsd.org | TCP/IP since RFC 956 > FreeBSD committer | BSD since 4.3-tahoe > Never attribute to malice what can adequately be explained by incompetence. > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.