[ntp:questions] About use of PPS in NTP sync

Paul tik-tok at bodosom.net
Wed Sep 3 15:45:02 UTC 2014


On Wed, Sep 3, 2014 at 10:30 AM, William Unruh <unruh at invalid.ca> wrote:
> Without PPS, the GPS has an accuracy (delay and fluctuation)
> in the tens of milliseconds range

Most of the time but, of course, not always.  From my stable NMEA
source (also using PPS):

remote: oPPS(0)
offset: -0.002
jitter: 0.003

remote: *GPS_NMEA(0)
offset:  -0.022
jitter: 0.013


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