Nope! No need for a lengthy standards tirade. Eric's right . . . I was
actually thinking of the RS449 rather than 422.
Dick
----- Original Message -----
From: Cameron Kaiser <spectre_at_stockholm.ptloma.edu>
To: <classiccmp_at_classiccmp.org>
Sent: Monday, September 18, 2000 6:42 PM
Subject: Re: RS-422 gender benders
> > "Richard Erlacher" <richard_at_idcomm.com> wrote:
> > > It's been at least 10 years since my last look at RS422, bit IIRC,
there
> > > were two connectors involved in that spec. There was a DC37 of one
geneder
> > > or another, and there was, I believe, a DA15 as well, which was the
one with
> > > the differential high-rate signals on it. Does that sound reasonable
to
> > > anyone. I know most applications use(d) a subset of this standard but
> > > referred to it as RS-422 only because they used the 5volt differential
> > > signalling-copmpatible drivers, e.g. 26LS32/33, MC3486/87, etc.
> >
> > I think you might be talking about RS-449. AFAIK, RS-422 is ONLY an
> > electrical specification, and does not recommend a connector. IIRC,
> > RS-449 specifies a connector and the use of RS-422 electrical
interfaces.
> >
> > And then there's RS-485, which is multi-drop (party line) RS-422. No
> > connector spec for this one either.
>
> AAAAAAA! Okay, okay, okay, Mac mini-DIN female-female! (lest I precipitate
> a standards discussion ... :-)
>
> --
> ----------------------------- personal page:
http://www.armory.com/~spectre/ --
> Cameron Kaiser, Point Loma Nazarene University *
ckaiser_at_stockholm.ptloma.edu
> -- The steady state of disks is full. -- Ken
Thompson -------------------------
>
>
Received on Mon Sep 18 2000 - 20:39:38 BST