That should have been: Its only necessary (as NIST have shown) to cool the splitters to reduce the correlated or anti-correlated thermal noise between splitter outputs. Everything else can run at ambient temperature.
Bruce > On 21 August 2019 at 21:13 Bruce Griffiths <bruce.griffi...@xtra.co.nz> wrote: > > > Its only necessary (as NIST have shown) to cool the splitters to reduce the > correlated or anti-correlated noise between the outputs. Everything else can > run at ambient temperature. > > Bruce > > On 21 August 2019 at 18:49 ed breya <e...@telight.com> wrote: > > > > > > That's quite an impressive system. I guess it's a few generations beyond > > my 11729C. > > > > One way to get overall performance to the limits of room temperature kT > > noise level, is to lower the T where you work. I wouldn't be surprised > > if some parts are TE-cooled, easily affordable in a big budget system. > > My first thought was maybe a bunch of stuff in a cryogenic system, but > > it looks like most pieces are modules in a rack mainframe, and not in a > > special environment. But, within the modules, I could picture some > > degree (PTP) of TE-cooling being included, giving some margin on the > > capabilities. > > > > Ed > > > > _______________________________________________ > > 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.
