Article View: sci.electronics
Article #8864Re: Converting RS-422 to RS-232
From: Tomislav Lozic
Date: Tue, 11 Dec 1990 01:48
Date: Tue, 11 Dec 1990 01:48
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In article <1990Dec10.173757.1162@ccu.umanitoba.ca>, kujanpa@ccu.umanitoba.ca writes: |> |> Can I build a circuit to change from RS-422 to RS-232? |> Can this circuit be powered from the Mac SE port? |> Using an external power supply is ok, but if the |> circuit could be powered from the line it would be |> great. |> You _can_ build such a circuit. However, if you have better things to do, you can buy RS-232 to RS-422 converter for about $10-$15 from B&B electronics. Their address is: B&B electronics P.O.Box 1040 Ottawa, Illinois 61350 The part is: RS-232 to RS-422 converter (model 422CFC) It comes together with a required power-supply (12V, 100mA). [ I don't know of any such circuit that is powered from SI port ] NOTE: To have a good long-distance performance connect the converter at RS-232 side and use RS-422 cable. (More expensive but also more reliable than long RS-232 cable.) ___________________________________ Tomislav Lozic <tom@bumrl1.bu.edu>
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!usc!apple!olivea!orc!bu.edu!bumrl1.bu.edu!tom From: tom@bumrl1.bu.edu (Tomislav Lozic) Newsgroups: sci.electronics Subject: Re: Converting RS-422 to RS-232 Message-ID: <70419@bu.edu.bu.edu> Date: 11 Dec 90 01:48:09 GMT References: <1990Dec10.173757.1162@ccu.umanitoba.ca> Sender: news@bu.edu.bu.edu Reply-To: tom@bumrl1.bu.edu (Tomislav Lozic) Distribution: na Organization: Boston University Lines: 29