[time-nuts] HP5065A A3 board

[timeok at timeok.it]

Hi all,

I am looking to understand the real difference between the old and new A3 board installed in the HP5065A. It is the multiplier chain from 5 to 60 MHz. I am sure there is a phase noise improvement between the two versions.
So I am looking for the old type  A3 schematics. Actually I have the manual referred to the serial prefix 1908A, I suppose the new version,  and an HP5065A prefix 1320A, I suppose the old version. 

thanks all,

Luciano
timeok at timeok.it
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