Fluke 5200A GPIB Card

[Tony_G]

Hey All,

Just wondering if anyone has every seen this card or if you know of anyone who has recreated it?

TonyG

[picburner]

I had that calibrator but I sold it and I didn't think to take a picture of the IEEE board.
Judging from the schematic the board would not be difficult to replicate the only obstacle is U34, a microcontroller of the MCS-48 family, you would need to have one to extract the code.
With the 8051, at least with the old devices, it is quite simple to do probably the thing is also possible with the MCS-48 family.
But you have to find someone who has the calibrator with the IEEE 488 card.....

Edit: I already had the U34 firmware, fortunately I hadn't deleted everything after selling the calibrator.
I'm attaching the firmware here, maybe it will be useful to someone.

[srb1954]

I have a GPIB card in my 5200A. I will take a photo and post it tomorrow.

There is a full schematic and component layout in the back of the Fluke 5200A manual P/no 357194 Sept 1975 Rev. 3 5/85. It is indeed based around an 8749 micro and all the GPIB functions appear to be implemented in LSTTL logic. It should be possible to replicate this circuit although 1 or 2 of the GPIB interface chips and old LSTTL chips may be a little more difficult to source these days.

The KO4BB site has a copy of the binary file for the 8749.

[Tony_G]

Interesting - I have a 5200 manual that says it is an 8448:

U34 IC, 8-bit micro-computer, with EPROM 454876 34649 8448-8C

I was primarily wondering because I took my 5200A out of the rack to test an extender board and I noticed that the cover plate I had taped in place said 488 instead of the the typical remote controller TTL stuff - I sort of glossed over that when I first acquired the unit years ago.

TonyG

[srb1954]

Interesting - I have a 5200 manual that says it is an 8448:

U34 IC, 8-bit micro-computer, with EPROM 454876 34649 8448-8C

I was primarily wondering because I took my 5200A out of the rack to test an extender board and I noticed that the cover plate I had taped in place said 488 instead of the the typical remote controller TTL stuff - I sort of glossed over that when I first acquired the unit years ago.

TonyG

I popped the label off the controller chip and found it was an Intel D8748H rather than an 8749 as I first thought. The label was "5200A-4086  454652 U34" which must be a different S/W revision to what you have.

Attached is a photo of the PCB.

[Tony_G]

Thanks - Great photo - I don't actually have the card, I just have the cover plate for the slot - Originally I thought it was just the standard TTL remote control card slot as the manual I got from Artek doesn't include the 488 option but checking, the manual I downloaded from Fluke does.