Path: utzoo!utgpu!water!watmath!clyde!rutgers!sri-spam!ames!ll-xn!husc6!amcad!billb
From: billb@amcad.UUCP (Bill Burton)
Newsgroups: comp.terminals
Subject: Re: Goofy DEC terminal to eia232 question.
Keywords: I know this must get asked often, but...
Message-ID: <136@amcad.UUCP>
Date: 11 Jan 88 08:49:00 GMT
References: <163@flatline.UUCP>
Reply-To: billb@amcad.UUCP (Bill Burton)
Organization: American Academy of Arts and Sciences, Cambridge, Mass.
Lines: 31

In article <163@flatline.UUCP> erict@flatline.UUCP (eric townsend) writes:
>...A friend of mine (not on the net) wants to hook up a DEC VT50 terminal
>to his CoCo-III (he's running OS9 w/30 meg HD).  We opened up the box,
>this kind of console television washing machine thing, and instead of
>a semi-standard serial port, we find current loop terminals.
>We're not old enough to know how these ancient and arcane things
>work. :-) We do know, however, that they use current levels instead of
>voltage levels. At least that's the current fantasy, and since we can't
>test it...
>
>Anybody have any suggestions, or have a wiring scheme they could
>provide?
>-- 
>J. Eric Townsend ->uunet!nuchat!flatline!erict smail:511Parker#2,Hstn,Tx,77007
>'Girls play with toys. Real women skate.' --Powell Peralta ad.| 'Hey, watch
>I disclaim all responsibility for others' ignorances. | me ollie this <whump>'

A device for converting from Current Loop to RS-232 is available from:
	Black Box
	P.O. Box 12800
	Pittsburgh, PA 15241
	(412) 746-5530

In their Winter '88 catalog, the device on p112 lists for $95.

disclaimer:  I am not related to Black Box in any way.  This is not meant
to be an endorsement of any of their products.  I am not a satisfied or
unsatisfied customer since I have never purchased anything from them :-) .

Hope this helps,
Bill