[time-nuts] Help with HP 8640B generator

[J. L. Trantham]

I did an e..y search for '8640B' and there were parts units as well as bags
of parts and various boards. You might check there.

Joe

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Murray Greenman
Sent: Thursday, September 04, 2008 10:03 PM
To: time-nuts at febo.com
Subject: [time-nuts] Help with HP 8640B generator

I've obtained a faulty HP 8640B signal generator, and have determined
that the fault is in one of the dividers. (The unit has output only on
the top two ranges). Other than that, the generator seems to be in fine
fettle.

Since the chance of finding a replacement gold-plated HP-numbered ECL
chip is less than improbable, I'm left with the option of trying to find
a replacement board from another junked generator.

So, does anyone by any chance have a spare divider board from an 8640B,
or a suggestion of how to replace the 64-128MHz divider with something
else?

73,
Murray ZL1BPU


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