Re: [ntp:questions] Bug 1700 - Clock drifts excessively at pollinglevels above 256.

2011-04-24 Thread David L. Mills
Edward, I don't know enough about the mechanism Windows uses to adjust the system clock. If some variant of the Unix adjtime(), the solution may be straightforward. The phase-lock loop parameters determine the risetime and overshoot of the discipline loop, in particular the loop gain and core

Re: [ntp:questions] Windows time question.

2011-04-24 Thread Uwe Klein
Terje Mathisen wrote: Depending upon the cut, quartz crystals can be more or less temperature-sensitive, so it is in fact possible to get one that will wander less when the surrounding temperature changes. AT cut at ~10MHz has best performance. A TCXO avoids the problem, as you noted, by hav

Re: [ntp:questions] Bug 1700 - Clock drifts excessively at polling levels above 256.

2011-04-24 Thread Mischanko, Edward T
Dr. Mills, Happy Easter. Thank you for your constructive comments. I am unable to run your suggested test because I currently don't have the knowledge and means to introduce that small of an error. Through expimentation, I have found that adjusting the CLOCK_PLL to 1.8 and CLOCK_FLL to