> Again, read Mark Martinec's web page. He's got a lot of good data.
> http://www.ijs.si/time/temp-compensation/
This is almost exactly what I was thinking. Mark's 7 years ahead of me
(laugh)
Thanks for the post, I appreciate the information.
___
q
> A Quadratic correction tends to run away pretty badly if you suddenly
> have a period of no ntp readings. But I am not at all sure that is what
> you mean. Rather you seem to mean that one use the temp to estimate what
> the linear drift is ( from the past readings of temp and drift.)
Correct, i
Has anyone thought about removing both the linear terms and quadratic
terms in the drift, by utilizing the temperature sensor readings
available on many of the latest motherboards?
Crystal oscillators tend to have both a linear bias and a quadratic bias,
determinate upon temperature, leaving a
