Netgear FS509 Installation Guide - Page 43
Appendix C Cabling Guidelines, Fast Ethernet Cable Guidelines, Category 5 Cable
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Appendix C Cabling Guidelines This appendix provides specifications for cables used with the Model FS509 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 two-pair or four-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). Category 5 Cable Category 5 distributed cable that meets ANSI/EIA/TIA-568-A building wiring standards can be a maximum of 328 feet (100 meters) in length, divided as follows: • 20 feet (6 meters) between the hub and the patch panel (if used) Cabling Guidelines C-1
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