Maarten, Maybe I didn't make myself clear. The case in question is when the intrinsic frequency error of the computer clock is greater than 500 PPM, in which case the discipline loop cannot compensate for the error. The result is a systematic time offset error that cannot be driven to zero. This has nothing to do with the initial offset as you suggest.
Dave Maarten Wiltink wrote: > "Unruh" <[EMAIL PROTECTED]> wrote in message > news:[EMAIL PROTECTED] > >>>David L. Mills wrote: > > >>>>Unless the computer clock intrinsic frequency error is huge, the >>>>only time the 500-PPM kicks in is with a 100-ms step transient and >>>>poll interval 16 s. The loop still works if it hits the stops; it >>>>just can't drive the offset to zero. > > [...] > >>Why can't it drive the offset to zero? 100ms should take about 5 min(if >>it were always 500 but the loop would make it take longer) > > > That would presumably be in the case of 'huge intrinsic frequency error'. > > Groetjes, > Maarten Wiltink > > _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
