Console VT320 out of order

[Steven Schweda]

My dim recollection of the VT320 includes an
MMJ (or two), not a 25-pin D, but every VT320
I ever saw died while it was still relatively
young, so it's been a long time. I assume
that this VAX has an MMJ for its serial
console port, so, with no actual information,
I also assume that a normal
(null-modem-equivalent) DECconnect cable was
being used with the VT320.

So, when I see a reference to "the adaptor",
I assume that it's an MMJ-to-25-pin-D
adapter, but without a part number, I don't
know if it's the right one, or if now a null
modem also needs to be added to the chain.

I might continue to try to guess what's
actually happening here, but it's just too
frustrating to ask question after question
and get no useful answers, so I've given up.
I still don't know if this VT220 can even
talk to itself.

[Gilles Salvin]

Thank you all.

well ; in fact I was connecting the console cable on the printer port (because it is the same cable format).

Now I have to find which interface using with which cable and where to connect on the
server.

EIA or 20mA HOST PORT CONNECTOR ?
I have to find a doc on VAX 4000/300 console port because I can't find a empty port.

[Volker Halle]

Gilles,

this page has a picture of the VAX 4000-300 console panel/bulkhead. It clearly shows the MMJ connector for the console terminal:

http://www.mcmanis.com/chuck/computers/vaxen/panels.htm

Volker.

[Volker Halle]

Gilles,

you need to use the 'EIA RS232C port' on your VT220.

Volker.

[Gilles Salvin]

Hi Volker,

Thank you very much for your answers.
My server is a 4000-300.
And the console port is a DEC-423 modular jack.
I think a vt220 is not compatible with a VAX-4000/300.

[Volker Halle · Accepted solution]

Gilles,

the type of terminal does not matter ! You'll need to find the correct adapter to be able to plug in your existing cable.

As the VT220 has a 25-pin DB25 port, you need an adapter from DEC-423 (MMJ) to 25-pin DB25.

Have a look at this page for types of adapters used in thise case:

http://labs.hoffmanlabs.com/node/467

Volker.

[junaid akhtar]

You just need a cable with one side of 25db connector and other side of mmj connector.It will work .Also check that on console you have configure it on line or offline.

[Gilles Salvin]

I have a display.
Thank you all.
But now the server don't start.
I open a new thread.