Netgear GSM7224 GSM7224 User Manual - Page 201
Appendix B Cabling Guidelines, Fast Ethernet Cable Guidelines
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Appendix B Cabling Guidelines This appendix provides specifications for cables used with a NETGEAR NETGEAR 7200 Series Layer 2 Managed 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 cross-talk 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 B-1 202-10009-01_060204
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