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Hello Joel, I was thinking it is the version with 4 holes. I found the same design in 2 of my Meinberg GPS167 units. One had a battery holder with 2 pins and one had a battery with 3 pins. I looked

This is a link for service manual version A, This might be useful to you.

I have modelled a simple foot that I use for the ESG series generators. It is just tall enough for the instrument chin to hover over the desk surface. Leo Here goes nothing:

Hello everyone. Please help. I have a 3585B that wont power up. I need a copy of the service manual, can anyone help??

Thank you both for chiming in. The unit is a 7562A, I apologize for the typo. I pulled a couple from another board and measured one side of each package, presumption is the other is similar. I was

My standard approach for replacement of batteries that support NVRAM containing instrument calibration , etc. is to connect either another battery or external power supply **with floating outputs**

Just FYI, you can use the (much shorter) www.hpwiki.org hostname in that URL. -Dave

Many thanks for your feedback! What was the problem with yours? A broken data line? Why exactly 100MHz shift? Or is some YIG lookup table messed up so it locks to the wrong harmonic? How did you get

Hi Tom, I got same problem few years ago on my 83630B. The faulty module is the low band module on the RF deck at the far end opposite to the output RF connector.

Here is a link to EGS and some history. https://www.hewlettpackardhistory.com/item/a-new-dimension-to-design/

Hi folks, my 8510C system recently developped an unlock error, so I have checked the source HP83651A first. It turns out, that the source output below 2,4GHz is exactly (to the Hz) 100MHz too low,

Believe it was HP EGS...Engineering Graphics System , ran on series 200 and 300 and recall a package running on the HP 9816 desktop.

David, everytime I walk past the delivery section in my company I wonder what "sending from and to" of these quite sensitive instruments will do to the calibration. There are always some instruments

[email protected]> wrote: Another option is to ignore trying to save the calibration constants, replace the battery and send it to Keysight and let them calibrate it. Then it will be as good as you

Hi have a pdf from the flowcharts, group B schematics and the groupB service excerpt.

"Joel Setton via groups.io" <setton@...> writes: Using an FRAM might be a possible solution. A quick search showed that there's a FM1608B vom Cypress - 8Kx8 and available in DI

Hi Jared, I had a check - no info on this instrument Peter

Hello Razvan, You are right, the original battery has 1 pin on the (-) end, and two pins on the (+) end. However, I found that the PC board has three plated holes on the (+) side including one in the

Hello Martin, The EPROM idea is interesting, I have explored it but I don't think it could work. The main issue is that the 8Kbyte RAM chip which holds the calibration data (TC5564APL-15) is also

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