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HP 8566B Service Manual and schematics

Question asked by rufus on Dec 18, 2008
Latest reply on Dec 16, 2014 by pcunagin

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I'm looking for a service manual that also has schematics for a HP 8566B. I have found the Verification Manual, Performance and adjustment manual and the Operational and Programming manual but I haven't located a manual that has any schematics.

My 8566B has funny looking response in all the bands except for the low band. Please see attached.

Thanks,

Bryan

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HP8566B.pdf22.8 KB

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dgun Dec 19, 2008 9:56 AM
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Service manual is indexed in the Agilent web:
http://cp.literature.agilent.com/litweb ... -90042.pdf

That looks like a fairly normal response. The discontinuities are band switching points, noise level usually increases with increasing frequency. What reason do you have to believe it's not working?
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rufus Dec 19, 2008 12:22 PM
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Hi Dgun,

Thank you for the link to the manual.

I understand the noise increase due to multiplying the LO but usually the noise in each band break can indicate the response or at least that's what I thought.

Please see attached of what I would expect.
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- good HP8566.pdf14.0 KB
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dgun Dec 19, 2008 12:57 PM
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Yes, it does look worse than the "good" one. Hope the manual helps you tune it back up.
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rufus Dec 19, 2008 1:50 PM
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Thanks for the help, have a nice holiday.

Bryan
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JohnMiles Jan 2, 2009 8:14 AM
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Bryan, that fault will probably be on the A6A11 Slope Generator board. One or more of the (many) trimpots might be intermittent.
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pcunagin Dec 16, 2014 10:31 AM
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Hey Bryan,

Do you still have the HP 8566B? I'm looking to purchase a used one and could use some advice! If anyone else reads this and has one or can give some input, please message me.
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HP 8566B Service Manual and schematics

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