[ntp:questions] Help appreciated

Richard B. Gilbert rgilbert88 at comcast.net
Thu May 14 01:15:11 UTC 2009


David Woolley wrote:
> 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.

I'd say that precision tells you where time ends and imagination begins!




More information about the questions mailing list