[ntp:questions] Assistance with PPS on Windows

Chris Albertson albertson.chris at gmail.com
Thu May 5 16:57:52 UTC 2011

The most simple explanation is that the PPS signal out of the clock is
just about as poor as NTP is reporting it to be.  In other words
everything is working fine.  Nothing is wrong with your cable or with
NTP or with Windows.    Until some tests show otherwise I think it is
best to assume the PPS signal going into the PC is close to how NTP is
describing it.

If you need better buy a GPS.  You can get setup with one that does
works at the nanosecond level for under $100.

On Thu, May 5, 2011 at 9:32 AM, Ken Link <klink at numberzero.org> wrote:
> Assuming the Delay, Offset, and Jitter column units are msec, after
> letting it run overnight and half of the next day I still see PPS with
> 0 delay, 4.559 msec offset, and 3.123 msec jitter.
> The PPS source is the Meinberg TCR511PCI card, as seen here:
> http://www.meinberg.de/english/products/tcr511pci.htm

Chris Albertson
Redondo Beach, California

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