Yes, the E1740A it is a VXI plug-in like the Racal 2351. I have the Racal and the VXI C-size small mainframe E1421B.
On Thu, May 3, 2012 at 12:31 AM, Pete Lancashire <[email protected]>wrote: > Or my E1740A :-) > > On Wed, May 2, 2012 at 2:18 PM, Tom Knox <[email protected]> wrote: > > > > I cannot believe my Guidetech GT4000 was left off your list. > > > > > > Thomas Knox > > > > > > > >> Date: Wed, 2 May 2012 22:11:25 +0200 > >> From: [email protected] > >> To: [email protected] > >> Subject: Re: [time-nuts] Setting up PRS10 with M12+T GPS > >> > >> On 05/02/2012 10:03 PM, Azelio Boriani wrote: > >> > You don't have a Cs reference but you have a GPS: in the long term it > is > >> > the same. By using a TIC (your preferred: HP5370B, HP5372A, SR620, > PM6680, > >> > PM6681, HP53132A, Racal 2351, Yokogawa TA720, PICTIC II, Wavecrest > DTS275 > >> > [SIA3000?] and others) keep track of the GPS PPS vs. the PRS10 PPS. > >> > >> Considering the M12+T PPS noise, you won't need anything stellar. A > >> PICTIC II will do just fine... or if you trust the PRS-10 readings, run > >> from that. > >> > >> What would make this better would to use a sawtooth-correction to PPS > >> delay setup, as the PRS-10 measurement resolution will be about on par > >> with that. Would lower the effects of hanging-bridges, even if one > >> suffers less when dealing with a rubidium. > >> > >> Adjust the PRS-10 PLL bandwidth/time-constant, the default value is most > >> probably not optimum, you can go further up in time. Do check the > manual. > >> > >> Cheers, > >> Magnus > >> > >> > On Wed, May 2, 2012 at 9:46 PM, Jerry Mulchin<[email protected]> > wrote: > >> > > >> >> I need some guidance from the collective. > >> >> > >> >> I just finished rebuilding my PRS10 lab standard and it is now using > a > >> >> M12+T GPS module. > >> >> I have completed my site survey and it is now in "hold position > mode", > >> >> TRAIM is enabled > >> >> with 500ns alarm setting and the 1PPS is enabled during non-TRAIM > alarm > >> >> conditions. > >> >> > >> >> The PRS10 is set for default 1PPS steering, but all of the other > >> >> parameters are just as > >> >> I received the unit 5 years ago. > >> >> > >> >> My questions are these; > >> >> > >> >> 1.) Should I reset the PRS10 to its Default settings or just adjust > >> >> selected parameters to > >> >> align the unit for proper operation with the M12+T unit? And if that > is > >> >> the case, what parameters > >> >> need adjusting? > >> >> > >> >> 2.) Are there any special settings, other than what WinOncore sets, > that I > >> >> should make to the > >> >> M12+T unit? > >> >> > >> >> 3.) After all this is completed, how do I know that the PRS10 is > properly > >> >> tracking GPS and > >> >> maintaining frequency accurately? I don't have a Cesium reference, > but I > >> >> do have an un-disiplined > >> >> LPRO-101, but I don't think that really helps me determine frequency > >> >> accuracy. > >> >> > >> >> I will be adding the sawtooth correction eventually to the M12+T 1PPS > >> >> output, but observed > >> >> negative sawtooth with WinOncore shows +/- 14ns changes with some > bridging > >> >> occasionally. > >> >> > >> >> While I don't ever want to claim NIST traceability, I would like to > be a > >> >> close as possible, and I > >> >> guess that is the bottom line need here. So what else do I need to > do to > >> >> get as close as possible? > >> >> > >> >> Thanks for any help. > >> >> > >> >> > >> >> > >> >> > >> >> Jerry Mulchin > >> >> > >> >> > >> >> > >> >> _______________________________________________ > >> >> 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. > _______________________________________________ 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.
