[time-nuts] Re: Self monitoring

[Bob kb8tq]

Hi

If you are trying to evaluate things like accuracy and stability, 
you really can’t do it internally. You need something else to
compare to. If you want to count number of dac bits of change
per hour, you certainly can measure that. Just what it means ….

Bob

> On Mar 31, 2022, at 7:15 PM, Hal Murray <halmurray at sonic.net> wrote:
> 
> 
> kb8tq at n1k.org said:
>> You really can???t compute things like ADEV by observing the device against
>> itself. You need an external / stable reference that is (hopefully) much more
>> accurate than the GPSDO to compare it to.  
> 
> What can I conclude when looking at data collected internally by a GPSDO (or 
> NTP)?
> 
> 
> -- 
> These are my opinions.  I hate spam.
> 
> 
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