David Taylor wrote:
On 26/04/2013 20:20, David Woolley wrote:
David Taylor wrote:
I don't see that here. With a local PPS reference you get within a
few microseconds within an hour. If the precision needed is less than
that,
We are discussing getting a good frequency lock, so that it will coast
well, rather than a good time lock.
If the time is stable, the frequency must also be stable, no?
If the time error is low and bounded the frequency error does not
necessarily have a low error bound. Simply polling fast and using a
short loop time constant can give you a low error bound on the time, if
the network delays are stable and the source is good.
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