Re: Xyplex RJ45-DB9 wiring

Albrecht Schlosser wrote:
Tom Linden wrote:

Trying to bring up a terminal server, and have difficult time getting
the wiring correct for the RJ45-DB9 (to go on OPA0) using straight through cable.


I'm not sure, what you want to do, but I think what you need would be
only a three/four pin wiring (data signals only, no modem control).

Connect:

xyplex pin 4/5 (signal ground) to OPA0(DB9) pin 5 (signal ground).
xyplex pin 3 (XMT) to OPA0(DB9) pin 2 (RCV).
xyplex pin 6 (RCV) to OPA0(DB9) pin 3 (XMT).

Some terminal emulators require the rts-cts lines to be jumpered if you are not sending them from end to end.

Others require the dsr-dtr lines to be jumpered.

It is best to always jumper these lines when they are not connected through so that the resulting cable or adapter can be used everywhere.

-John
wb8tyw@xxxxxxxxxxx
Personal Opinion Only
.

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  • Re: Xyplex RJ45-DB9 wiring
    ... the wiring correct for the RJ45-DB9 (to go on OPA0) using straight through cable. ... Anybody out there gone through the excercise? ...
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