[time-nuts] Seeking HP 3561A schematic diagrams

Rob Sherwood. rob at nc0b.com
Fri Feb 12 18:29:22 EST 2016


Any 3561A will work. 
Rob
NC0B

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Charles Steinmetz
Sent: Friday, February 12, 2016 12:28 PM
To: TimeNuts
Subject: [time-nuts] Seeking HP 3561A schematic diagrams



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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