[ntp:questions] SNTP with 1ms of precision?

David J Taylor david-taylor at blueyonder.co.uk.invalid
Fri Jun 18 06:14:00 UTC 2010

"Richard B. Gilbert" <rgilbert88 at comcast.net> wrote in message 
news:fcGdnXzbxfVY7IfRnZ2dnUVZ_sadnZ2d at giganews.com...
> If you have a GPS timing receiver (different from navigation receiver), 
> with a PPS output, one edge of that pulse should be accurate to within 
> 50 nanoseconds.  A serial output will tell you which second is marked by 
> the pulse.

.. although the very popular GPS 18x LVC specifies:

   "Accuracy: Measurement Pulse Output Time: +/- 1 microsecond at [the] 
rising edge of the pulse."

so not quite as good as 50 nanoseconds.


More information about the questions mailing list