Hi Gang,
i am trying to do the oscillator alignment on my 5200A which went ok until step 23 on page 4-56 when it states that you should get "total spread of approximately 13 mv" ie:- +7to -7 mv whereas i get +14 to -13mv for a total spread of 27 mv.
My question is is the 13 mv total correct or should i get +- 13mv as in my case.
Given that i have found several other mistakes in the service manual writings i was wondering if this may be also a mistake.
If the total 13mv spread is correct it leads me down another rabbit hole.
Any advice welcome.
Ken Goodhew.

Hi volt-nuts fellow, Hello Ken,

I just discovered your question, as this site was not used for a long time.. I’ll look for your request on eevblog as well.

First off, I never got to this long check table for the regular calibration and adjustment procedure, as this is obviously intended as a  ‘troubleshooting sequence’ only, see hint 4.93 on page 4-20. The adjustment process is much shorter. If your 5200A works properly, I suggest to not fiddle around with that long procedure.. as you would probably fall into that rabbit hole.

I understand this paragraph, that you should see a variation of about 13mV in total, going through zero, i.e. that could be asymmetric around zero. 27mV therefore would be too high, but as you said, the manual is full of errors, and probably there could have been a modification (Engineering Change) at one time, so that the spread was enlarged by re-design.

As far as you can align that feature to zero, I guess, it’s ok.

Frank