Netgear FS750AT FS750 Reference Manual - Page 44

Category 5 Cable Specifications Table C-1 lists the electrical requirements of Category 5 UTP cable. Table C-1. Electrical Requirements of Category 5 Cable Specifications 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 Twisted Pair Cables For two devices to communicate, the transmitter of each device must be connected to the receiver of the other device. The crossover function is usually implemented internally as part of the circuitry in the device. Computers and workstation adapter cards are usually media-dependent interface ports, called MDI or uplink ports. Most repeaters and switch ports are configured as media-dependent interfaces with built-in crossover ports, called MDI-X or normal ports. Auto UplinkTM automatically senses which connection, MDI or MDI-X, is needed and makes the right connection. cabling guidelines C-3