On Jan 9, 2009, at 2:24 AM, [email protected] wrote: > Message: 2 > Date: Fri, 09 Jan 2009 10:27:05 +0100 > From: Magnus Danielson <[email protected]> > Subject: Re: [time-nuts] GPSDO TC & Damping > > Dick, > >> Well, like many here, I don't actually have the equipment, especially >> the reference std., to do these MDEV, ADEV and other analyses, so, >> since I use the GPSDO for a frequency standard and not for UTC, I >> thought I'd get the expert opinions. Magnus has several times >> indicated here that a TC laying somewhere in and around 100 to 1000 >> secs is probably optimum. > > I think you have misinterpreted my postings. I never claimed it was > optimum, or at least never intended to. I think 100 secs is good for > doing additional experiments with damping parameters. It would be > interesting to see just how low the bulb may go. This only since it is > obvious that it makes such a clear difference at 100 secs. It's a > choice > out of measurement and interpretation practicality, not optimum from a > use perspective. If you consider my postings you would see that I > rather > promote the concept of adjusting the time constant dynamically to > situations rather than say 1234.5678 seconds is the optimum. > > Cheers, > Magnus
Sorry, Magnus, I didn't mean to put words in your mouth. I was remembering last Fall, when you suggested that people look at your ADEV plot and to be mindful of the of the bounding slopes of the curves. If I've mis-remembered the emphasis or the facts, I do apologize. I thought your argument then, as I remember it, was strong and valuable. Seems like it gave a good range of possible values to use for Tau in the measurements. I probably won't go far beyond the capabilities of the TBolt, such as implementing a PID controller with dynamic control of variables using a microcontroller and LPGAys and writing my own software, but I love it when you talk that way. Best, Dick Moore _______________________________________________ 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.
