NETGEAR FS518T manual Category 5 Cable Specifications

FS518T.Manual.FINAL 5/19/00 12:55 PM Page 40

Category 5 Cable

Category 5 distributed cable that meets ANSI/EIA/TIA-568-A building wiring standards can be a maximum of 328 feet (ft) or 100 meters (m) in length, divided as follows:

•20 ft (6 m) between the hub and the patch panel (if used)

•295 ft (90 m) from the wiring closet to the wall outlet

•10 ft (3 m) from the wall outlet to the desktop device

The patch panel and other connecting hardware must meet the requirements for

100 Mbps operation (Category 5). Only 0.5 inch (1.5 cm) of untwist in the wire pair is allowed at any termination point.

Category 5 Cable Specifications

Ensure that the fiber cable is crossed over to guarantee link.

Table C-1 lists the electrical requirements of Category 5 UTP cable.

Table C-1. Electrical Requirements of Category 5 Cable

Specification	Category 5 Cable Requirements
Number of pairs	Four
Impedance	100 Ω ± 15%
Mutual capacitance at 1 KHz	≤ 5.6 nF per 100 m
Maximum attenuation (dB per 100 m, at 20° C)	at 4 MHz: 8.2
	at 31 MHz: 11.7
	at 100 MHz: 22.0
NEXT loss (dB minimum)	at 16 MHz: 44
	at 31 MHz: 39
	at 100 MHz: 32

cabling guidelines C-2