Apollo stuff

[Jochen Kunz]

On Wed, 13 Jul 2005 10:57:21 -0500
"Director" <csmuseum at cse.uta.edu> wrote:

> The Apollo cards I have have a strange connector. It appears to have
> two coax and a half dozen wires in a DB form factor.
It is called a 7W2 connector.

> I did not get any cables, so I have no idea what connections are
> actually used.
Only the two coax connectors are used. They are simply ring in and out.
You connect ring out of one machine to ring in of the next until you
closed the ring. The cables are 75 ohm RG59.

> I can't see how you could use a modern TR cable with that since it was
> 4 wire shielded twisted pair. F connectors would imply coax.
TR != ATR. Apollo Token Ring is a thing of its own, not compatible with
the Token Ring that IBM and a few others used.
-- 


tschüß,
       Jochen

Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/