On Tue, Jun 16, 2009 at 6:07 PM, Magnus Danielson<[email protected]> wrote: > Hal Murray skrev: >> >> [email protected] said: >>> >>> I've recently gotten an opportunity to work on a GPSDO at work, and >>> so I now have a real need to pick up some more information on the >>> design tradeoffs and approaches in a GPSDO. I've plowed through a pile >>> of old emails, but it's difficult to get a good overview from email >>> threads. >> >>> I would appreciate links to discussions on the tradeoffs inherent in a >>> GPSDO. Sampling clock rate, filter bandwidths, jitter requirements >> >> Be sure you know about hanging bridges. Start with the >> "Timing for VLBI" slides at http://gpstime.com/ > > The key issue is, what type of specs is needed? What may it cost? > What kind of receiver may be considered? What's the intended application? > Specs.. Hmmmm. Good question. The application is for a frequency reference, so frequency stability vs. PPS accuracy is important. Cost is perhaps less important than size. The OCXO under control is a small, surface mount part with +/- 0.5 PPM over temp, but flexibility to use higher accuracy parts would be good. As this is for an internal application, I'm not sure how much else I can disclose.
Thanks Dave > Cheers, > Magnus > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
