SMC Networks SMC7800A/VCP manual Appendix B Cables, Twisted-Pair Cable and Pin Assignments

Models: SMC7800A/VCP

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APPENDIX B

CABLES

Twisted-Pair Cable and Pin Assignments

For 10BASE-T and 100BASE-TX connections, the twisted-pair cable must have two pairs of wires. Each wire pair is identified by two different colors. For example, one wire might be green and the other, green with white stripes. Also, an RJ-45 connector must be attached to both ends of the cable.

Caution: DO NOT plug a phone jack connector into any RJ-45 port. Use only twisted-pair cables with RJ-45 connectors that conform with FCC standards.

Caution: Each wire pair must be attached to the RJ-45 connectors in a specific orientation. (See “10BASE-T/100BASE-TX Pin Assignments” on page B-2for an explanation.)

The figure below illustrates how the pins on the RJ-45 connector are numbered. Be sure to hold the connectors in the same orientation when attaching the wires to the pins.

8

8

11

Figure B-1 RJ-45 Connector Pin Numbers

B-1

Page 31
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SMC Networks SMC7800A/VCP manual Appendix B Cables, Twisted-Pair Cable and Pin Assignments