DECstations 3100 serial port pinout configuraion

[Andrew Poling]

In article <25929 at agate.BERKELEY.EDU> wilson at 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 at gollum.hcf.jhu.edu
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