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Owner`s manual

ManualsBrandsAlpha Microsystems ManualsComputer equipmentAM-6000
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A-4
Appendix A
AM-6000 Computer Owner's Manual, Rev. 00
The technique for making an adequately shielded cable involves connecting the metal cable hood to the
cable drain wires to ensure electrical continuity. Please refer to the figure above.
When you strip the end of the shielded cable to allow access to the signal wires, also strip a small
amount of the plastic coating back from the interior foil layer of the cable. Trim the drain wires and bend
them down over the plastic coating of the cable. Make the signal wire connections by soldering the
proper signal wires to the appropriate connector pins as discussed in the preceding section.
Next, put the metal connector hood in place, enclosing the cable. Bend the drain wires back up over the
outside of the connector hood neck, and solder them into place. Crimp the supplied strain relief ring over
the connector hood/cable connection as shown in the figure above. If a plastic outer shell is provided for
the metal connector hood, put it in place now.
The new RJ-45 serial ports have a shield ground connection at pin 1. All cables adapters and assemblies
have the shield ground connection to pin 1. These pre-made cable assemblies are available from Alpha
Micro and their part numbers and details are documented in the AM-359 product installation
instructions. For pinout and cable construction information, refer to
AM-359 - 8-Port Serial I/O
Installation Instructions
, PDI-00359-00
RS-232 DB-9 CONNECTOR SIGNALS
For RJ-45 connectors, use the standard AM-359-50 cable set or straight RJ-45 patch cords. The
RJ-45 connectors use the same pin-outs as DB-9 connectors.
The following table shows the signal-to-pin orientation applicable to each standard DB-9 serial I/O
connector:
PIN Direction RS-232 Signal Name
1 N/C—No Connection
2 Input RXD—Received Data
3 Output TXD—Transmitted Data
4 Input CTS—Clear to Send
5 Output RTS—Request to Send
6 N/C—No Connection
7 GND—Signal Ground
8 Input DCD—Data Carrier Detect
9 Output DTR—Data Terminal Ready
Table A-1: Rear Panel DB-9 Connector Signals