Connector Configurations
Page A-7
AM-6000 Computer Owner's Manual, Rev. 00
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
RJ-45 Patch Cord
Terminal or Printer
DB-25 Adapter
SIGNAL
PIN#
DIRECTION
PIN#
DIRECTION
PIN#
SIGNAL
RXD
5
←
5
←
2
TXD
RTS
4
→
4
→
5
CTS
TXD
3
→
3
→
3
RXD
DTR
6
→
6
→
8
DCD
CTS
2
←
2
←
20
DTR
GND
7
←
7
←
7
GND
DCD
8
←
8
←
4
RTS
Shld GND
1
←
1
←
1
Shld GND
Table A-5: RS-232 RJ-45 to DB-25 Connector Signals
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.