Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!gatech!uflorida!indri!aplcen!jhunix!ecf_hap
From: ecf_hap@jhunix.HCF.JHU.EDU (Andrew Poling)
Newsgroups: comp.unix.ultrix
Subject: Re: DECstations 3100 serial port pinout configuraion
Summary: DECconnect?
Message-ID: <2021@jhunix.HCF.JHU.EDU>
Date: 30 Jun 89 21:45:43 GMT
Expires: 29 Jul 89 23:00:00 GMT
References: <25929@agate.BERKELEY.EDU>
Reply-To: ecf_hap@jhunix.UUCP (Andrew Poling)
Followup-To: comp.unix.ultrix
Organization: The Johns Hopkins University - HCF
Lines: 30

In article <25929@agate.BERKELEY.EDU> wilson@potassium.cchem.berkeley.edu (Michael A. wilson) writes:
>
>     Does anyone know the pinouts to adapt the RJ/11 (6 wire) serial port
>on the 3100 to a 9-pin RS232 ( or a 25-pin RS232 ) ?  We don't yet have
>the technical specs for our machines.

If it's DECconnect (the clip is offset to one side) then it looks like this
inside:

	RS 232 Specs for DECconnect MMJ

		DTR--- 1
		TD --- 2
		GRD--- 3
		GRD--- 4
		RD --- 5
		DSR--- 6


Obviously, if it's not DECconnect you should ignore this.  Note that
flipping the cable over in the MMJ causes a DTE/DCE flip - clever.


-Andy

--
Andy Poling						andy@gollum.hcf.jhu.edu
Network Services Group					ecf_hap@jhunix.UUCP
Homewood Academic Computing				ECF_HAP@JHUVMS.BITNET
Johns Hopkins University