Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site oddjob.UChicago.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxj!ihnp4!gargoyle!oddjob!sean From: sean@oddjob.UChicago.UUCP (Sean Casey) Newsgroups: net.periphs Subject: How long can an RS232 line be? Message-ID: <487@oddjob.UChicago.UUCP> Date: Thu, 11-Oct-84 19:21:12 EDT Article-I.D.: oddjob.487 Posted: Thu Oct 11 19:21:12 1984 Date-Received: Sat, 13-Oct-84 06:20:29 EDT Organization: U. Chicago: Astronomy & Astrophysics Lines: 20 <> Dear Netland, I'm planning to run a few rs232 lines around my office and I would like to know the net's opinion as to o the maximum length a line can be before inductive voltages become a problem. Is shielding really necessary? (Lines lengths are about 200ft or so) o what length and under what conditions are optical isolators (or their equvalent) between the system and the terminals required (advisable) for rs232 lines. Please reply by mail and thanks in advance. Sean Casey ...ihnp4!oddjob!sean University of Chicago Department of Astronomy and Astrophysics