Date: Mon, 5 Apr 1999 15:26:45 +0200 From: German Tischler <tanis@gaspode.franken.de> To: "Andy V. Oleynik" <andyo@prime.net.ua> Cc: freebsd-questions@freebsd.org Subject: Re: Strange garbage on COM1 Message-ID: <19990405152645.A745@gaspode.franken.de> In-Reply-To: <370875F1.44D037C2@prime.net.ua>; from Andy V. Oleynik on Mon, Apr 05, 1999 at 11:36:02AM %2B0300 References: <370875F1.44D037C2@prime.net.ua>
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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. -- 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
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