-------- In message <CADHrwpfp1kuXWW8XzQpqK+m=47z5pn4sumzfve_gjcjhzzd...@mail.gmail.com>, Dana Whitlow writes:
>Probably the easiest solution would be to feed 1 PPS from the T'bolt into a >full-featured >PRS-10 Rb, then fiddle with the loop parameters in the PRS-10 to best suit >your needs. Been there, tried that, not a good idea. The PPS input of the PRS-10 is OK for "coarse" PPS signals like those you get out of a GPS, because the sawtooth noise dithers over the unlinearity and "missing codes" of the PRS-10 timestamping circuit. When you feed a PRS-10 a "perfect" PPS signal, you get really erratic behaviour. Only way to slave a PRS-10 from a "good" source, is to do phase-comparison on the 10MHz signal, and after suitable filtering and integration, use that to set the PRS-10 frequency via the serial port. That, on the other hand can give amazing results because of the relatively good X-tals they put in the PRS-10. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [email protected] | 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 -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
