21 Jan
2008
21 Jan
'08
3:52 a.m.
From: "Charles":
Wayne (Teletypeparts at aol.com) posted this on
Greenkeys a few days
back, but so far there have been no responses. I don't have my DEC
manual collection handy and my 8/A has a different console connector.
I'm sure that someone here knows the pinout, or where to find that
schematic diagram or manual page (isn't it a W076 card)? Please let
him (or the list) know...
thanks
Charles
>I am looking for the simple wiring diagram to connect a 33 ASR to a
>PDP 8. I have the 6 wire cable with the flat molex connector that
>goes to the PDP 8. The other end is just wire ends. I know that
>wires 2 go to 33's receive and 2 to 33's send, the other 2 to the
>tape reader control, but not which ones. My color pairs are
> black/white black/red black/green
>if that is any help. But if I knew the molex pin layout, I could
>trace them back to the right connection on the 33.
My LT33 print set shows BLU/WHT/BLK/ORN/RED/GRN on the W076 card,
going to WHT/GRN/BLU/BLK/ORN/RED on pins 2-7 of the 8 pin molex
connector #7006593. ORN(+) (orange) and BLU(-) are the reader
run relay. WHT goes to 6 (TTO-), BLK goes to 7 (TTO+), RED goes
to 4(TTI+), and GRN goes to 3(TTI-) on the TTY board. (Assuming
you've got your TTY modded per DEC's instructions, of course.)
The notes say yellow is sometimes used for WHT, and gray for GRN.)
Your color scheme seems quite a bit different, but you should be
able to translate based on the pins at the molex connector. Pin
one is at the top looking into the connector's mating edge (that
is, at the male pins) with the keying tab to your left.
Hope that helps!
Vince