[Test-Equipment] HP 8601A Sweep Generator repaired!

[gil smith]

Hi Arthur:

I'd like to know what you found on your 8601A.  I also have one.  I thought
it would look good next to the 141/855x analyzer (similar knobs etc.)  Plus
the frequency-crank/digit mechanism is quite cool. 

I have never really look too closely at the 8601A sweeper, since I didn't
really need it (I have an 8640A gen, and a 8443A TG).  Though I recall
noting the harmonics to be decent.

But I'd like to know if I can improve it.

thanks,

gil smith


At 10:19 PM 10/23/02 -0400, you wrote:
>Many thanks to all those who replied with help & suggestions. I
>considered their advice and finally decided that there was indeed a
>problem. (Some readers thoughtfully suggested that this instrument is
>not in the same category as a standard signal generator, and I respected
>their good opinions.)
>
>A bit of work with a scope and the schematics offered a diagnosis of
>excessive voltage drop across a narrow PCB trace, causing the undesired
>FM hum. There appear to be several variations of these boards, so
>perhaps HP addressed the problem in a later run.
>
>If any readers would like my eventual solution, please email me
>directly.
>
>Once again, many thanks to those who offered advice, without which I
>might not have investigated further.
>
>Arthur Shulman
>
>
>
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