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"Lothar baier" <Lothar@...> writes: Interesting, thanks for sharing. I checked my own manuals. The one I purchased from Artek has the 2812A component level service manual for the 8340B,

Hello George, from 12,000 miles away. If only I had met you when I lived and worked in the UK. I have a couple of 8640Bs that I’ve managed to keep going – the odd capacitor failing, and those

Hi Ruben, sorry, for white/white-red wire, the AC current for “no plugin” is 2.67A, not 267mA…I forgot to multiply by ten for this measurement, my probe was on the scale 100mV/A. Yves De :

LO that, My experience would not agree with your thoughts. The one I recently bought off eBay seems to work as described in my previous message to Lou. NI software seems to like it as does at least

Its the 8516A 40GHz testset ! The manual outlines that FW 11.88 is required and SN 2812A or higher. Yes there are hardware changes, the CPU and sweep board have different part numbers , the 8516 uses

Not surprised at all ! Virtually all “NI” GPIB/USB adapters sold by Chinese vendors on ebay are Fake , unfortunately this also starts to spill over on US sellers as people who bought them from

Hi Lou, I believe I have NI-Visa 19.5 64 bit installed. I did an upgrade to the newest version tonight as the tool claimed I had an old version. I can confirm that both my Old and New NI-GPIB-HS both

What’s the test set and does it provide any reason why it requires a newer serial number source? I had a compatibility issue with my 8341 and 8510C but it was firmware related and simply fixed by

Interesting Dave, You must have installed NI drivers to get it to work. What version are you using? Regards Lou VK3ALB

I purchased recently from EBL2018 on a NI USB HS and it seemed to recognize fine on time labs. I can’t say 100% that I did anything else other than plugging it in and seeing software found it FWIW.

Thanks All, It probably won't surprise you as much as it disappointed me to learn that I bought a fake adapter from eBay. The seller gave me all my money back in a heartbeat as soon as I lodged a

John made a custom connector for LSSM not long ago, for a Varian 620 minicomputer. It needed some cleanup (copper whiskers from the milling

Hi All HP8640B's should have a card extender clipped over the main capacitors along with some spare PSU fuses, check if one is there.? Over the long manufacturing lifetime a number of different power

You should ask John Nery (WA1ESO) for a set of 8640B extenders. He is selling sets for specific instruments on the big platform or directly at avery reasonable price. These are sold as kits

Just realized I made a duplicate response, my last one went to the second page and I didn't notice, so I thought I never asked my question about the focus. oops, now I feel stupid :)

Jim- that is how it happened to me. Thought about it for a moment and it worked....still have a case of canned air...so it will be a while...not like the old days when we had Freon.... maybe someone

Ref unlock is a symptom in any case - it indicates, that soon you should do the 10MhZ Ref adjustment and probably also the 100MHz REF Oscillator adjustment. The diagnostic section of the earlier 8566

Thanks for all the tips, guys; really helpful. I've found a very readable and comprehensible description of the various functional blocks concerned and how they inter-relate to one another in the

Ok.? Just wondering because it seems whenever I need one, all I have is the other!? So tempting to just turn it upside down....JimSent from my T-Mobile 4G LTE Device

works for me, although seems the condensation is worse with canned air, may be my imagination. Renée