Datasheet for Beckman SM-854

[Dylan Distasio]

Hi all-

I picked up a Beckman SM-854 counter awhile back with some kind of panaplex display.  Does anyone happen to have a datasheet for it?  I was hoping it would be easy to figure out, but when I opened it, it is on some kind of ribbon that looks like it is made out of a paper like substance (just describing it visually) and it is difficult for me to see traces.

There are 6 ICs on the ribbon.  3 in a row on one part of the ribbon are SN7475Ns, and the next section closest to the display consist of two Beckman DD-700, and one DD-702 decoders/display drivers.  The display itself is a 1 with a plus minus sign and two 7 segment displays.

The back of the counter has 3 separate blocks of 14 pins each.  I'm still a beginner with reverse engineering, so if noone has a datasheet, I would also appreciate any suggestions on figuring this out.  I thought it might make a fun project.

Thanks,

Dylan

[Nick]

DD-700 & 702 datasheets here: http://www.decodesystems.com/dd-700.html

The Panaplex display itself looks like an SP-754 - datasheets here: http://www.tube-tester.com/sites/nixie/data/SP-754/sp-754.htm

HTH

Nick

[Dylan Distasio]

Thanks, Nick.  I saw those there.  Ideally, I am looking for one for the counter itself with pinouts for the back of the casing.

On Fri, Feb 28, 2014 at 10:20 AM, Nick <ni...@desmith.net> wrote:

DD-700 & 702 datasheets here: http://www.decodesystems.com/dd-700.html

Nick

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