Hi Bob, On 28 May 2010 04:32, Bob Camp <[email protected]> wrote:
> There are a raft of papers on each of the sub portions of the fitting > process. Aging, retrace, temperature, and acceleration all have their own > issues and fit approaches. > > The whole "how (and why that way) do they test a chronometer?" is something > there's a lot of papers on as well. Some of them date back into the 1600's. > > Where do you want to start? I'll probably start in the middle and figure out if I'm in the right place before I move from there. What I'm looking for are any docs on the various ways that xtal oscillators are affected, IE. drift over short time, long time, temp, pressure, humidity, gravitational effects of the Moon and the Earth, that sort of thing, things that have been studied and can be modelled for a xtal. I'm interested in what has been done by others to try and correct as much as possible, IE. ocxo et al, and to predict changes in an undisciplined xtal. When I look at the efc of my gpsdo I can see the effects of drift and temp changes and I'd like to look at the predictability of that. I'm excluding other forms of noise and xtal flips from this as they are outside any form of predictable control. Thanks, Steve -- Steve Rooke - ZL3TUV & G8KVD A man with one clock knows what time it is; A man with two clocks is never quite sure. _______________________________________________ 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.
