DECServer 90L+ startup help

From: John Lawson <jpl15_at_panix.com>
Date: Sun Dec 28 18:39:28 2003

On Mon, 29 Dec 2003, Witchy wrote:

> > -----Original Message-----
> > From: cctalk-bounces_at_classiccmp.org
> > [mailto:cctalk-bounces_at_classiccmp.org]On Behalf Of John Lawson
> > Sent: 29 December 2003 00:11
> > To: cctalk_at_classiccmp.org
> > Subject: DECServer 90L+ startup help
> >
> > I have a pair (3 actually) of the above terminal servers - I have them
> > cabled up, yet the two I have connected seem not to play well together...
> > the remote terminal (a VT220) displays :
> >
> > >XDS90L-321, Connection Not Established - Network Not Connected
>
> Have you got a proper thinwire segment between all of them? The one thing

 Thinwire/thickwire = does this equal x-length of good 50 ohm coax with
BNCs on either end? If so - thats covered. What I'm *not* doing is
terminating - I didn't figure I'd have to with each connector on the
servers joined by a single run of coax. I have the BNC Ts - should each
end also need 50 Ohms...? Mongo not Grok LAN voodoo...


> that always caught my customers out was the end connections MUST be t-pieces
> with 50 ohm terminators, even on the servers. If you've got a DS90 on its
> own it must have a t-piece with 2 terminators on its thinwire port,

2 50 Ohm terms per port? Mongo very confused now... Mongo Least
Significant Bit in Error Register of Life....


Cheers

John
Received on Sun Dec 28 2003 - 18:39:28 GMT