On 04/09/2012 06:55 PM, Attila Kinali wrote:
On Mon, 9 Apr 2012 18:40:47 +0200
Azelio Boriani<azelio.bori...@screen.it> wrote:
It is clear that the short term is limited by the instrument trigger
jitter. A mixer pre->scaling is clearly needed.
that is, a mixing to take down the 10MHz to a lower frequency? Mixing with
a higher stability source?
He probably meant DMTD[1,2].
Attila Kinali
[1] "Picosecond time difference measurement system", by D.W. Allan, 1975
[2] http://www.wriley.com/A%20Small%20DMTD%20System.pdf
Indeed. I meant DMTD.
The oldest DMTD setup I know is from the NASA special conference on
short term stability in 1962, See NASA Special Publication 80 (SP80).
It's linked at the Wikipedia article on Allan deviation.
DMTD comes in many shapes.
Cheers,
Magnus
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