Pinout for current loop interface

On Sat, Aug 17, 2019 at 12:14 PM Charles via cctalk <cctalk at classiccmp.org> wrote: Given the problem you are trying to solve, if I were in your shoes, since I have a lot of DEC gear, I would standardize on 8-pin Mate-n-Lok connectors, but I have numerous devices already so equipped (ASR33, VT52, VT220, VT100 w/20mA option, PDP-8 (various), DZ11 breakout panel...) Since I was just holding an original IBM PC serial interface (as discussed above), I should probably bite the bullet and make a DB25-8-pin-Mate-n-Lok cable for it, just in case (I happen to have a couple of options for using ISA cards on Amigas, so it's even multi-platform). I happen to have a stash of the shells. What I should do is buy a bag of the pins and get a reel of the 4-wire (R/G/B/W) cable that was commonly used in the DEC world, then I'd be all set. DB25s are easier to come by, but as has been mentioned, there's not one way to wire them up and having a large stack of magic pin-swabber cables is kind of a pain. -ethan