Have just seen this and is relevant to the current CSAC discussion https://www.iqdfrequencyproducts.com/news/2018/01/18/iqd-targets-high-performance-communications-applications-with-new-tight-stability-low-phase-noise-ocxo Blair lade (Australia) --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

Hi The “ppb” number in this case is the temperature performance. Indeed, that is “pretty close” to the temperature performance of the CSAC. Aging is rated at 50 ppb / year. That’s a bit further out than what a typical CSAC will do. In either case, if you let the beast run for a year, it is aging that will dominate the error. Temperature and voltage affects will be minor on either the CSAC or this OCXO *if* it runs “open loop” for a long time. On the other hand, if it “phones home” for a sync on a daily basis, aging does not matter much at all. Bob > On Jan 26, 2018, at 6:29 AM, Blair Lade <blairl@bettanet.net.au> wrote: > > Have just seen this and is relevant to the current CSAC discussion > https://www.iqdfrequencyproducts.com/news/2018/01/18/iqd-targets-high-performance-communications-applications-with-new-tight-stability-low-phase-noise-ocxo > > Blair lade (Australia) > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.