[ntp:questions] Meinberg PPS signal is not synchronous with refclock signal

alkopedia at googlemail.com alkopedia at googlemail.com
Thu Dec 18 11:47:42 UTC 2008


On Dec 18, 10:08 am, Martin Burnicki <martin.burni... at meinberg.de>
wrote:
> Hi,
>
> The PCI511 card decodes the AM signal from DCF77 only. Due to the
> characteristics of the AM signal the accuracy of the PCI511 card is only in
> the range of a few milliseconds, while the GPS card provides an accuracy
> better than 1 microsecond.
>

Hi, you got me wrong. I did not wonder about the offset between gps
and pps but about the offset between gps refclock and it's own gps pps
(same for dcf refclock and it's own dcf pps).
Take a look at this picture: http://img-up.net/img/gps-delay0tHm49.png




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