[ntp:questions] PLL vs. FLL why is their behavior so different?

Mischanko, Edward T Edward.Mischanko at arcelormittal.com
Sat Jul 9 01:52:12 UTC 2011


I've noticed that when polling at lower intervals, and PLL is in use,
that the frequency tends to change as expected to steer the offset
towards zero.  When polling intervals increase, and FLL is in use, the
frequency tends to follow the offset and not steer the offset towards
zero.  Why does FLL behave like this?  I am using a Windows XP operating
system.




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