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I forget the nomenclature of the pen style red LED readout DVM. I had several and they were neat. Regards – Mike Mike B. Feher, N4FS 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 Sent: Tuesday,

Hello All, I am doing a bit of research to accomplish a comprehensive understanding of the DVM / DMM technology from the late fifties and early sixties into the 90's. I have come up with what I think

I can't speak to the ROMS in the 3325A specifically, but a lot of these ROMS have gold plated pins, which causes a very specific problem. The gold alloys with the tin and lead in the solder to form a

Perhaps you might think that, but Didier's site has a ROMS section which aspires to have ROMS for just about everything. Far easier to go to one place for everything, than to go hunting hither and

I drew a blank looking for these a while back, I deduced from the data in my 8553B manual that it may have been an HP proprietary part as it's HP part number 5060-0467 and its manufacturer part number

No, they are definitely non mini-DIN. Here's a photo: http://www.us-instrument.com/objects/catalog/product/image/img2324.jpg

I think my 3325A originally had the two EPROM option. The person with the problem referred to in the original ‘thread’ had a three or four EPROM option, IIRC. He was able to install the ‘two

I am, of course, interested in the details. I'm not seeing either of those two motorolla eprom numbers as available from the usual suspects. Did you have a supplier in mind? Do you think your machine

I found the data that I was looking for regarding the ‘two EPROM’ option for the 3325A as linked to by Dennis and replied to by Dave. I can send it to anyone that is interested. The ‘two

By alternately heating and cooling the area around U3, one of the rom chips, I can get it working and make it fail. It appears I have the beginnings of Rom rot. BTW, it has behaved this way for the 2

Go to Mouser and search for Mini DIN connectors. I think HP used them on these power supplies; nothing special. Dave M ---In hp_agilent_equipment@..., <starmux64@...> wrote : Has anyone

There is a copy of the 3325B ROMs on Dieders site. In my opinion, that is the go to place for firmware. Regards

I think it might be better if they were in the FILES section of this group or in a group set up for that purpose. Bob Macklin K5MYJ Seattle, Wa. "Real Radios Glow In The Dark"

Sorry guys. I meant to reply to directly to Miles. Thanks, Barry - N4BUQ

Hi Miles, I could use a "new" range switch knob. Also, do you have the individual boards for the counter available or are you selling just the complete counter? Mine has the short shaft for the fine

Not too long ago I acquired an 8640B carcass to plunder. It was missing the UHF oscillator unit when I bought it, and I pulled off the front panel, slide switches and a few other parts I needed. I do

There is at least one site that is a depository for such things. It’s Dieder’s site, http://www.ko4bb.com/manuals/index.php?dir=01_ROM_Images_and_Drivers Not complete by any means, but probably

Hi guys, Does someone in Switzerland or even better Geneva area, has and is willing to cede to me for day or two HP 8560 or 8563 Specrum analyzer? I need that for calibrate my signal generator.

After the recent discussion about the problems in a HP 3325 I think it would be wise if the group developed a depository of ROM programming files and modification instructions. In the case of the HP

Hello Tom, I think the Weinschel 5872 are similar to the HP step attenuators. There is not even much troubleshooting information on the HP types. I'll list a couple of links. As I understand there are