[time-nuts] Seeking HP 3561A schematic diagrams

[Adrian]

Hi Charles,

an original manual is listed on ebay.
There are pdf's available for less money.
I don't know of any free downloads of Vol.2.

The 3048A system is running with a standard 3561A.

Cheers,
Adrian

Charles Steinmetz schrieb:
> I'm helping a colleague resurrect a hard-luck HP 3048A phase noise
> measurement system.  In particular, he asked me to help get the 3561A
> dynamic signal analyzer working again.  I downloaded Volume 1 of the
> service manual from Keysight, which contains Sections I through VI but
> does not contain Section VII (schematics and service information).  I
> suspect that Section VII is Volume 2 of the manual, but do not know
> for sure.
>
> So far, I have been unable to find downloadable schematics.  Does
> anyone have a PDF of Section VII, or know where one is available to
> download?  Failing that, does someone have a hard copy they are
> willing to scan or copy?  (Because of the basket-case nature of the
> instrument, my friend does not want to pay real money for
> documentation until we have some assurance that we will be able to get
> it going.  He is willing to pay reasonable copying costs to someone
> who is not in it for profit, if we cannot find a free download.)
>
> (I'm not sure if there are any hardware differences between "regular"
> 3561As and the ones supplied as part of the 3048A system.  I'm pretty
> sure the faults [at least the major ones] lie in the basic hardware,
> so I don't think we need schematics particular to the 3048A if there
> are differences.)
>
> Thank you,
>
> Charles
>
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