Hi Fred,
On 05/15/2011 10:01 PM, Tijd Dingen wrote:
Check. That is what I understood the "Overlapped variable tau estimators"
bit on wikipedia to be about. Same raw data, smarter processing.
Indeed.
Notice that you need to adjust your data for cycle-slips. If you don't
do that you will get
Hi Magnus,
Magnus Danielson wrote:
>>> Notice that the pre-scaler is only used for higher frequencies.
>> Understood. I was just using the prescaler as an example for the "what if
>> if take every Nth edge".
> Consider then the typical measurement setup:
> A counter is set up to make a time int
Hi Fred,
On 05/14/2011 01:02 PM, Tijd Dingen wrote:
Magnus Danielson wrote:
Notice that the pre-scaler is only used for higher frequencies.
Understood. I was just using the prescaler as an example for the "what if
if take every Nth edge".
Consider then the typical measurement setup:
A coun
Magnus Danielson wrote:
> > http://en.wikipedia.org/wiki/Allan_variance#Non-overlapped_variable_.CF.84_estimators
> Nice to see people actually read and use what I wrote.
:-)
> If you use a prescaler of say 1/64 then it takes 64 cycles of the original
> signal to cause a cycle to the counter
On 05/13/2011 05:28 PM, Tijd Dingen wrote:
In trying to put together a way to calculate Allan variance based on a series
of timestamps of every Nth cycle, I ran into the following...
Suppose you have an input signal, but it's a bit on the high side. So you use a
prescaler to divide it down to
In trying to put together a way to calculate Allan variance based on a series
of timestamps of every Nth cycle, I ran into the following...
Suppose you have an input signal, but it's a bit on the high side. So you use a
prescaler to divide it down to a manageable frequency range. And now you wan
