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Serial port layout for Ultra 25

807557
807557 Member Posts: 35,835
Hi,

I have looked through the forum but cannot find an answer to my question.
It might be that this is common knowledge, but I was wondering how the Serial Port (DB9) A on the Ultra 25 Workstation is "pinned".

What I want to know is what pin sends/receives which signal. For example (clipped from random website):

1 CD «— Carrier Detect
2 RXD «— Receive Data
3 TXD —» Transmit Data
4 DTR —» Data Terminal Ready
5 GND System Ground
6 DSR «— Data Set Ready
7 RTS —» Request to Send
8 CTS «— Clear to Send
9 RI «— Ring Indicator

where 1 is upper left corner and 9 is lower right corner:
___________
\ X        /
\       X / <- 9
The reason for asking, and not just guessing and fooling around is that I am trying to connect to a:

8 CTS
7 DTR
6 GND
5 TD
4 RD
3 GND
2 DSR
1 RTS

system, and will probably have to make the cable myself.

Edited by: thebog on Dec 3, 2008 3:03 PM

Edited by: thebog on Dec 3, 2008 3:05 PM

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