[Info-vax] DECServer 900tm Console port connection

[jasonkoelling at gmail.com]

On Wednesday, May 12, 2010 at 1:51:43 PM UTC-5, syslost wrote:
> On May 11, 6:52 pm, Steven Schweda <sms.antin... at gmail.com> wrote:
> > syslost wrote:
> > > [...] regular ethernet cable [...] and a xover cable [...]
> >
> >    Step one, get a VOM, and see what you're connecting to
> > what.  It's usually pretty easy to see the difference between
> > the solid (>= 6V) output on an output pin and what's left on
> > an input pin.  If you're not connecting a data output to a
> > data input, then it's not likely to work.
> >
> >    Worry about the data signals first, then the control
> > signals.
> >
> >    The (null-modem) cables I recently built for my DECserver
> > 90TL look like the following:
> >
> >           RJ45         D25F
> >    |    1  Rgnd      GND   7
> >    |    2  RXD       RXD   2
> >    |    3  Tgnd      GND   7
> >     |   4  CTS (nc)  CTS   5
> >     |   5  RTS       RTS   4
> >    |    6  TXD       TXD   3
> >    |    7  DTR       DTR  20
> >    |    8  DSR       DSR   6
> >
> > I have 25-9 adapters from those to 9-pin connectors, where
> > needed.
> 
> Thanks for all the help
> 
> The problem was the pin config on the mj45.  It's a crimp type
> connector, just lay the wires in as needed and crimp.  The crimp side
> pins were numbered different than the mj45 side of the connector.  I
> had assumed that the crimp in the first position was to pin 1 and so
> on to pin 8 - not true
> 
> 
> Crimp side pin order          mj45 side pin
> 1                                     2
> 2                                     1
> 3                                     3
> 4                                     5
> 5                                     4
> 6                                     6
> 7                                     8
> 8                                     7




so can you give your final pinout from RJ45 to DB9 ?