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Thank you Hal, those pictures should have all the missing information, I can see they removed a double thickness ground trace from the front and made a much wider trace on the back, it confirms the

My board was a revision "D" and I uploaded pictures to the 3400A area of the files section. Hal

Just from your description I knew it's a wet-slug Ta type. These were used in certain spots where fairly high capacitance is needed, with low leakage. When it opened up, there went the CW filter

Those are very very special caps. They are made to insure that the equipment fails after a number of years. The acid that leaks out will dissolve PC traces. Make sure you clean any residue off. I use

Below is a partial screengrab showing what the dropbox email from Artek contained, from this you should be able to make out the Agilent front page on the second file, I've sent a message, hopefully

Thanks to both Hal & David for info. The 03400-60013 manual covers 03400-66512 Rev A (prefix 2225) & Rev C (prefix 2415). As has been suggested elsewhere, it's most possible the Rev D was only covered

The custom scale compensates for nonlinearity in the meter movement itself, not the instrument the meter is installed in. Dave Wise ________________________________ Sent: Monday, November 20, 2023

Hi all, I can hardly believe what I saw when I took out the A6-board. A capacitor with only one leg... what the heck is so special about this one that its so different to all the others - and leaking,

David - you mention you are doing your own replacement for this board - if you are still in the design stage i would suggest you look at the OPA182 for the chopper amp - I used it in one I did a while

I'm *think* that I have one that has this revision - I'll check this evening and post pictures if I do. Hal

I have the 03400-90013 version from Artek and it is a very good and clear scan of the manual with full page schematics and bookmarks - typical Artek quality... maybe your copy was overwritten or

Strange . Not listed as available. Must be sold out .

Hi Martin, One important detail. is that the CW filter is only active when the 8350 is in CW mode. If the 8350 is set to a center frequency and zero span, its still in "sweep mode", and the CW filter

On Sun, Nov 19, 2023 at 06:24 AM, factory wrote: > > The original boards with edge connectors were nickel or gold plated, the > ones I saw on ebay looked to be HASL, this could be a problem with the >

Probably not good for professionals, but cheap and usable for hobbyists. Here is how successfully used a couple of Aeroflex-Weinschel attenuators. (

I'd like to echo Andrew's suggestion of testing the traces from end to end. It is tedious, but testing each trace that runs under or near where the runners sat may find your problem.? A signal trace

There have been several posts recently both here and on other sites concerning the replacement of the chopper amplifier board in the HP 3400A meters.? I myself have made a couple of different ones

Hi Chuck, thanks for reminder on BT1 battery inside the HP8350B. In the two units that I have both were still present and already corroded but no damage done yet the HP 8350B. If you wish to rebuild

Bonjour Yves, The trace is as noisy with or without CW-filter. I already wondered what this CW button is doing at all :-) When its on, the LED behind is not as bright as the others, perhaps there's a

Yes. I was coming to the errors in the diagnostics. I am waiting for a decent solder sucking station to turn up now. Now that you have pointed out some more of the bad VIA I can see how some I thought