Rs-232 Rj-45 To Db-25 Cables For Terminals And Printers; Table A-5: Rs-232 Rj-45 To Db-25 Connector Signals - Alpha Microsystems AM-6000 Owner's Manual

Connector Configurations

RS-232 RJ-45 TO DB-25 CABLES FOR TERMINALS AND PRINTERS

The following table shows the signal-to-pin orientation of each of the AM-6000's four on-board serial
I/O connectors. Note that this particular cable uses an RJ-45 to RJ-45 patch cord, and a DB-25
connector adapter to interface to the terminal or printer. The AM-359 serial I/O paddle cards can use an
identical cable when required.
Computer End
SIGNAL PIN#
RXD
RTS
TXD
DTR
CTS
GND
DCD
Shld GND
The patch cords should be internally twisted-pair cable with RJ-45 connectors on both ends. The pin
assignments are straight through (pin-for-pin) with no swapped ends.
Alpha Micro also offers a pre-made cable featuring an RJ-45 connector on one end and a standard
female DB-9 connector on the other end. For more information on RJ-45 cable adapters and types, refer
to the AM-359 product installation instructions (PDI-00359-00). The AM-359 PDI has details on the
cables and adapters available from Alpha Micro to interconnect just about any serial device to these
ports.
AM-6000 Computer Owner's Manual, Rev. 00
RJ-45 Patch Cord
DIRECTION
←
5
→
4
→
3
→
6
←
2
←
7
←
8
←
1

Table A-5: RS-232 RJ-45 to DB-25 Connector Signals

PIN# DIRECTION
←
5
→
4
→
3
→
6
←
2
←
7
←
8
←
1
Page A-7
Terminal or Printer
DB-25 Adapter
PIN# SIGNAL
2 TXD
5 CTS
3 RXD
8 DCD
20 DTR
7 GND
4 RTS
1 Shld GND