Netgear FE508 Installation Guide - Page 37

Appendix C Cabling Guidelines, Fast Ethernet Cable Guidelines

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Appendix C Cabling Guidelines This appendix provides specifications for cables used for the NETGEAR Model FS508 Fast Ethernet switch. Fast Ethernet Cable Guidelines Fast Ethernet uses UTP cable, as specified in the IEEE 802.3u standard for 100BASE-TX. The specification requires Category 5 UTP cable consisting of either 2-pair or 4-pair twisted insulated copper conductors bound in a single plastic sheath. Category 5 cable is certified up to 100 MHz bandwidth. 100BASE-TX operation uses one pair of wires for transmission and the other pair for receiving and for collision detection. When installing Category 5 UTP cabling, use the following guidelines to ensure that your cables perform to the following specifications: • Certification. Make sure that your Category 5 UTP cable has completed the Underwriters Laboratories (UL) or Electronic Testing Laboratories (ETL) certification process. • Termination method. To minimize crosstalk noise, maintain the twist ratio of the cable up to the point of termination; untwist at any RJ-45 plug or patch panel should not exceed 0.5 inch (1.5 cm). Cabling Guidelines C-1

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Cabling Guidelines
C-1
Appendix C
Cabling Guidelines
This appendix provides specifications for cables used for the NETGEAR Model FS508 Fast
Ethernet switch.
Fast Ethernet Cable Guidelines
Fast Ethernet uses UTP cable, as specified in the IEEE 802.3u standard for 100BASE-TX. The
specification requires Category 5 UTP cable consisting of either 2-pair or 4-pair twisted insulated
copper conductors bound in a single plastic sheath. Category 5 cable is certified up to 100 MHz
bandwidth. 100BASE-TX operation uses one pair of wires for transmission and the other pair for
receiving and for collision detection.
When installing Category 5 UTP cabling, use the following guidelines to ensure that your cables
perform to the following specifications:
•
Certification. Make sure that your Category 5 UTP cable has completed the Underwriters
Laboratories (UL) or Electronic Testing Laboratories (ETL) certification process.
•
Termination method. To minimize crosstalk noise, maintain the twist ratio of the cable up
to the point of termination; untwist at any RJ-45 plug or patch panel should not exceed
0.5 inch (1.5 cm).