[time-nuts] Advantages & Disadvantages of the TPLL Method

[Magnus Danielson]

John,

On 06/13/2010 10:00 AM, John Miles wrote:
>
>>
>> Correlation-based phase noise measurements
>> http://www.femto-st.fr/~rubiola/pdf-others/correl-report.pdf
>> -- for John Miles
>>
>> Practical Problems Involving Phase Noise Measurements
>> http://tycho.usno.navy.mil/ptti/ptti2001/paper42.pdf
>> --  also for John.
>
> I've got these in my collection, but it never hurts to go back over them.
> Both these papers, of course, end their exploration of averaged correlation
> by saying "and here a dynamic signal analyzer is typically used." :-P

Which is how they say "problem solved by somebody else".

> It turns out that the common OCXO I was using has a higher PN floor than I
> thought (about -154 dBc/Hz) so I'll probably switch to independent OCXOs
> before delving into this too much further.

You where kind of measuring the noise floor of your setup.

Cheers,
Magnus