Sure it is message ID #21 to be looked for? On Sat, Mar 10, 2012 at 2:54 PM, Magnus Danielson < [email protected]> wrote:
> On 03/10/2012 02:38 PM, Filip Ozimek wrote: > >> >> It's an old novatel SUPERSTAR II. >> > > It's not hard to hook up a more stable 10 MHz oscillator to the Novatel > Superstar II. There is PCB foot-print for it and you need to move a > component (don't recall if it is a resistor or cap) to enable it. > > Get the message ID #21 and use the clock bias and clock drift measures to > steer the oscillator. It should be trivial to setup a FLL/PLL PI loop and > steer a DAC. > > http://webone.novatel.ca/assets/Documents/Manuals/om-20000086.pdf > > The PPS may still need some processing. > > I've intended to do this for ages, but never got off the ground. > > Cheers, > Magnus > > Filip. >> >> >> Dnia 10 marca 2012 14:14 Bob Camp<[email protected]> napisał(a): >> >> Hi >>> >>> Which module do you have? >>> >>> Bob >>> >>> >>> >>> On Mar 10, 2012, at 8:07 AM, Filip Ozimek<[email protected]> wrote: >>> >>> Hello, >>>> >>>> >>>> could you recommend me a good project of GPS-DO? I've got a GPS module >>>> with 1PPS output and a 20 MHz VCXO. >>>> As I understand to do a phaselock to 1 PPS signal one must build some >>>> kind of digital PLL. But I'm not sure >>>> how to calculate a correction signal to the VCXO and how to test such a >>>> disciplined oscillator. >>>> >>>> Filip. >>>> >>>> _______________________________________________ >>>> 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. >>> >>> >> _______________________________________________ >> 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. _______________________________________________ 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.
