[time-nuts] Re: Counter internal resolution error

[Bob Camp]

Hi

The 53230A will generate a cute little histogram that backs up whatever “one sigma” number it
presents. Just as one would expect, when it is down in the 10 ps one sigma range you see bins
that are empty. That said, the “eyeball" distribution still looks like a gaussian sort of thing. 

Bob

> On Mar 16, 2023, at 3:17 AM, Michael Wouters via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> Dear time-nuts
> 
> Counter specs often include an “internal resolution” error. For example,
> the SR620 specs say that it is 25 ps in single-shot, but this can be
> reduced to 4 ps with sufficient, repeated measurements. Can anyone    offer
> any enlightenment as to the origin of this error, and the statistical
> distribution it has? I mentioned the SR620 but information about the 53230A
> would be interesting too.
> 
> Cheers
> Michael
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