[time-nuts] ADEV and fractional frequency

[Magnus Danielson]

Hi,

Well, there is two different ways to evaluate ADEV, but the 5360 variant 
would be the non-overlapping Allan Deviation for sure.

Cheers,
Magnus

On 04/14/2016 04:33 PM, Jeremy Nichols wrote:
> Correct, Attila. I've been trying to find two separate definitions when
> it seems they are the same thing. It also shows my age that I don't
> automatically check Wikipedia.
>
> Jeremy
>
> On 4/14/2016 3:18 AM, Attila Kinali wrote:
>> Hoi Jeremy,
>>
>> On Wed, 13 Apr 2016 16:16:02 -0700
>> Jeremy Nichols <jn6wfo at gmail.com> wrote:
>>
>>> It would appear that the Allen variance as defined at the bottom of page
>>> 4 in TVB's reference to the December 1970 HP Journal (thanks, Tom!) is
>>> the same formula as that used for "fractional frequency deviation" in
>>> other HP publications on the 5360A. This is helpful to me because I've
>>> been tearing my hair out trying to find one reference that equates
>>> the two.
>> Do you mean by "the two" ADEV and fractional frequency? If so,
>> could you enlighten me where the confusion comes from? Because
>> the formula you refere to in the HP journal is just a different
>> way of writing the standard two sample ADEV which you can also
>> find on wikipedia.
>>
>>             Attila Kinali
>>
>
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