Danny, It doesn't stop working; it just clamps whatever it gets to +-500 PPM as appropriate. If the intrinsic error is greater than 500 PPM, the loop will do what it can with the residual it can't correct showing as a systematic time ofset.
Dave Danny Mayer wrote: > David L. Mills wrote: > >>Danny, >> >>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. >> >>Dave > > > Yes, I found this out when my laptop stopped disciplined the clock and > was complaining about the frequency limits and I started digging into > the code to figure out why. > > Danny _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
