Hi If you watch a z3801 or 3805 you can see it switch time constants. There appear to be about 4 steps on the 3805. Beyond that I have only a guess that they are starting in the vicinity of 4 seconds and finishing at or beyond 200 seconds.
Bob On Jul 8, 2010, at 4:40 AM, Ulrich Bangert wrote: > Bob, > >> More or less you would be making the TBolt do a dumbed down >> version of what the Z38xx's do. > > If you have more detailed knowlegde about what the Z38XX do concerning their > time constant, would you share it with me? > > There has been another thread here on TBolt's time constants. A TBolt that > has run for some weeks or so lives well with a time constant of 1000. More > than that is no improvement because then the loop cannot follow the dayly > temperature changes in a typical flat anymore. > > Best regards > Ulrich Bangert > >> -----Ursprungliche Nachricht----- >> Von: [email protected] >> [mailto:[email protected]] Im Auftrag von Bob Camp >> Gesendet: Donnerstag, 8. Juli 2010 03:23 >> An: Discussion of precise time and frequency measurement >> Betreff: [time-nuts] Auto TBolt TC Adjust >> >> >> Hi >> >> From looking at the numbers on a set of TBolt's it's apparent >> that adjusting the time constant after they have been on >> power for a while is a good idea. Something like: >> >> Start at 10 seconds until pps is within 10 ns for 5 minutes >> Run at 50 seconds until the same condition is met >> Bump to 200 seconds, check >> Bump to 1000 seconds >> >> More or less you would be making the TBolt do a dumbed down >> version of what the Z38xx's do. >> >> Before I go out and build up a gizmo to read TSIP and shoot >> the commands to the TBolt, I thought I'd see if somebody had >> already made one of these up. Anybody have one of these already? >> >> Thanks! >> >> Bob >> _______________________________________________ >> 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.
