[ntp:questions] Help appreciated

David Woolley david at ex.djwhome.demon.co.uk.invalid
Wed May 13 22:38:30 UTC 2009


Richard B. Gilbert wrote:

> 
> Precision is the smallest possible difference between two successive 
> readings of the clock.  It has nothing to do with accuracy.  Precision 

The only reason it is reported is that it does affect accuracy.  It is 
one of the components that go to make root dispersion which in turn is 
used to estimate the error band on a time measurement.

However, the internal clock can be more accurate than the precision. 
The problem is that you cannot access that accuracy using only a single 
sample.




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