Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!kentrox!kentrox.uucp!bud From: bud@kentrox.uucp (Bud Couch) Newsgroups: comp.dcom.modems Subject: RS423 specs Message-ID: <1991May29.213236.16713@kentrox.uucp> Date: 29 May 91 21:32:36 GMT Sender: bud@kentrox.uucp (Bud Couch) Organization: Kentrox Industries, Inc. Lines: 18 In article braun@dri.com (Karl T. Braun (kral)) writes: >Does anyone have a machine readable copy of the RS423 standard that I can grab. >I'm not looking for anything as in depth as the real EIA spec, but a >description of pinouts, etc. > EIA 423 (no longer RS) is only an electrical specification, and does NOT specify "pinouts, etc." It simply states what voltages (+2v< ON >+6V) are output for "ON" or "SPACE", what voltages (-2v> OFF < -6V) are output for "OFF" or "MARK", and what voltages should be detected ( more than |200 mV|) for each state. It also specifies rise times and such. Other specification such as EIA 449 or EIA 530 specify the definitions of the interchange circuits and their pinouts. -- ################################################# Bud Couch - ADC/Kentrox | And diff'ring judments serve but to declare | If my employer only knew... |That truth lies somewhere, if we knew but where| standard BS applies | -William Cowper |