From: Iain Barker (ibarker@aastra.com)
Date: Mon Jul 28 2003 - 18:54:45 EDT
Sorry, I should have been more explicit in the description here.
The RS232 standard includes one primary serial connection on pins 2,3
It also includes a secondary serial connection on pins 14,16
These are independent serial lines, as far as I am aware.
The cable we need has to support full RS232 DB25 connection. i.e. more than
just the primary TX+RX pins wires, it specifically has to include the
secondary TX and secondary RX pins wired to another serial line.
In our application one pair (the main, on pins 2,3) is being used for serial
terminal. The other pair (the secondary, on pins 14,16) is being used for a
serial printer.
What is required is a cable or adapter which can split the single DB25
connector into two separate RS232 MMJ (or DB9 etc) connections so that they
can go to independent ports on the VT520, which is replacing the aged VT100
plus printer.
i.e.
MMJ1 to RS232 25D-F (primary connection)
2 TX to pin 2 TX1
5 RX to pin 3 RX1
3+4 SG to pin 7 SG
MMJ2 to the same 25D-F (secondary connection)
2 TX to pin 14 TX2
5 RX to pin 16 RX2
3+4 SG to pin 7 SG
Does anyone have an idea for a supplier of this type of RS232 splitter
cable?
I need a quantity of these, otherwise I would just solder one up myself.
thanks.
ps. apologies for the double posting.
This archive was generated by hypermail 2.1.7 : Sat Apr 12 2008 - 10:49:28 EDT