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Article #16224

RS 232 & RS-422 voltage specs wanted

#16224
From: Povl H. Pedersen
Date: Tue, 05 Jan 1993 02:24
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My Mac's serial port has partly died. It will receive data from RS-232
units, and both send and receive  to my DeskWriter which is RS-422.
So I would like to know what voltages does the standards use ?
What voltage is on the TxD when the port is not in use ?

thanks,
Povl
-- 
Povl H. Pedersen   -   Macintosh specialist. Knows some DOS and UNIX too.
pope@imv.aau.dk    -   povlphp@uts.uni-c.dk
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Message-ID: <1993Jan5.022447.20082@uts.uni-c.dk>
Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!sunic!dkuug!uts!povlphp

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Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!sunic!dkuug!uts!povlphp
From: povlphp@uts.uni-c.dk (Povl H. Pedersen)
Newsgroups: sci.electronics
Subject: RS 232 & RS-422 voltage specs wanted
Message-ID: <1993Jan5.022447.20082@uts.uni-c.dk>
Date: 5 Jan 93 02:24:47 GMT
Organization: UNI-C, Danish Computing Centre for Research and Education
Lines: 10