22 Jan
2002
22 Jan
'02
10:16 a.m.
On Tue, 22 Jan 2002, Dave McGuire wrote:
On January 22, Tothwolf wrote:
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
- 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.