Timing newbie here, so please educate me - why does aging matter? Isn't the whole purpose of a GPSDO to completely eliminate long-term drift?
Thanks Henry On Tue, Feb 16, 2010 at 2:36 PM, Bob Camp <[email protected]> wrote: > Hi > > A similar question though would be - once you have done all the > "corrections" to the setup of the TBolt (damping, time constant, > sensitivity) what's left to fix? > > I would *guess*: > > Lower aging > Better TC > Better short term > > Aging will likely get better the longer you leave the existing oscillator on > power. You also may be able to pick between units to find the best of 4 or > something like that. > > TC can be improved a number of ways simply by "helping" the existing part. I > think we have gone over that in about 300,000 messages so far. > > Short term stability is about the only thing I can see that's still on the > list. > > That gets you to the question - just how good do you think the 1 second AVAR > is on the existing oscillator, independent of the TBolt environment? > > If for instance you have a 2.5x10^-12 OCXO in yours, you would only see a > significant improvement with a sub 1.0x10^-12 OCXO. That sort of bounds your > OCXO shopping list right there. > > Bob > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Scott Newell > Sent: Tuesday, February 16, 2010 1:06 PM > To: [email protected] > Subject: Re: [time-nuts] TBolt OCXO replacement > > At 11:37 AM 2/16/2010 , WarrenS wrote: >> >>In the ever ending battle to improve my TBolt's performance, I am in the > process of upgrading a OCXO replacement I did to it a while back. >>It would be Interesting to hear suggestions from others that have done > similar sort of things and the results they have achieved. > > Did you check out John Miles's writeup? > > http://www.thegleam.com/ke5fx/tbolt.htm > > > > _______________________________________________ > 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. > -- Henry Hallam Sent from my Laptop _______________________________________________ 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.
