[A bit long] Stuff for sale...

From: Tothwolf <tothwolf_at_concentric.net>
Date: Tue Jan 22 18:16:28 2002

On Tue, 22 Jan 2002, Dave McGuire wrote:
> On January 22, Tothwolf wrote:
> > > - Black Box 232/CL-E RS232 to Current Loop adapter -- modem-sized box
> >
> > What are these for? I've got two or three of these units on a shelf behind
> > some boxes.
>
> Uhh, they convert RS232 to a current-loop interface? :)
>
> PDP8, early PDP11, and lots of other systems used 20mA (and other)
> current-loop interfaces before +-15V RS232 came into vogue.

I'm afraid I just haven't been exposed to enough of the older gear yet :)

-TOth
Received on Tue Jan 22 2002 - 18:16:28 GMT