Date: Tue, 06 Apr 1999 00:41:39 +0300 From: =?koi8-r?Q?=E1=CE=C4=D2=C5=CA=20=F7=2E=20=EF=CC=C5=CA=CE=C9=CB?= <andyo@prime.net.ua> To: German Tischler <tanis@gaspode.franken.de> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Strange garbage on COM1 Message-ID: <37092E0E.919DC2B1@prime.net.ua> References: <370875F1.44D037C2@prime.net.ua> <19990405152645.A745@gaspode.franken.de>
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German Tischler wrote: > On Mon, Apr 05, 1999 at 11:36:02AM +0300, Andy V. Oleynik wrote: > > Hi, guys, > > I know it 's offtopic, but due the lack of time > > I write here, sorrey, > > Recently I've discovered "getty repeat to quickly on ttyd1" > > (this is port2port leased line to my customer). I've investigate > > this event & descovered there is 15V Rx/Tx (2/3 pins) voltage > > on my port.Futher I measured voltage on another properly > > working port & there was 11V Rx/Tx voltage. > > I looked in the MBD but didnt recognize any suspecious things. > > Pls, tell me what the voltage must be there? > > The hardware specs you give are normal for an RS-232-C interface, > which says that the voltage between Tx and Rx should be between > -15 and -5 volts (MARK) when the port is idle (given that you have > DTE interface, which you should have). From what you say, you probably > didn't get the configuration right yet. If U talk about gettytab I'm sure that it isnt 'cos I turned of getty from port & simply looked with cu what had happened. There was permanets stream of garbage on output. BTW when I measured voltage on customer port there was 0V. What a hell? Have U any ideas? > > > -- > German Tischler tanis@gaspode.franken.de > Apple eaten (core dumped) tanis@cip.informatik.uni-wuerzburg.de > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message -- Andy V. Oleynik (When U aim for perfection, U discover it's a moving target ö80) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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