Electronics > Repair

Looking for HP 3325A ROM Images

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NE666:
Hello.

As per the title, I'm hoping that someone on the forum is able to either provide me with, or point me in the direction of, ROM images for the 4 ROM version of the 3325A Synthesizer/Function Generator. I've been able to locate images for the successor 3325B online ('K04BB' website) but not for the A version.

I recently came into possession of one that I'm using as much for exercising my diagnostic and repair chops on, as anything else. So far, my investigations suggest that (as a minimum) the U1 ROM has failed. I'd like to be able to either emulate or substitute a replacement in order to test that theory.

Thanks.

fzabkar:
Can you upload your ROM images?

picburner:
Actually on the Ko4bb site there are the files of the 3325A but for only two eproms. Are there different hardware versions of the same instrument?

Edit: However, the two 8KB eprom files found on the Ko4bb site can be converted into 4 x 4KB files for your instrument, as someone at HP/Agilent in groups.io did.

TERRA Operative:
I have two 3325A, I'll check this weekend if they have what you need.

NE666:

--- Quote from: picburner on December 06, 2024, 03:42:08 am ---Actually on the Ko4bb site there are the files of the 3325A but for only two eproms.

--- End quote ---

Would you mind providing a link to where you saw those? I'd thought I'd made a good search of that site, yet only found the 'B' version of FW. Even the section on 3325A has only images marked as being for the B.


--- Quote from: picburner on December 06, 2024, 03:42:08 am ---Are there different hardware versions of the same instrument?

--- End quote ---

Yes, I believe that to be the case, based on threads I've returned during Google searches. The suggestion being that HP flipped between 2 and 4 ROM (sometimes using EPROMs) variants during the production lifetime of the 'A' version, where they needed to because of supply issues. The subsequent 'B' version had many HW changes and improvements, especially to the logic and control board, including a different processor, so the 'B' ROMs certainly can't be used in the 'A'.


--- Quote from: picburner on December 06, 2024, 03:42:08 am ---Edit: However, the two 8KB eprom files found on the Ko4bb site can be converted into 4 x 4KB files for your instrument, as someone at HP/Agilent in groups.io did.

--- End quote ---

Again, might I trouble you for a link? I've been unable to locate that discussion.

Thanks for your help.

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