[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.
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