Netgear FS 750 User Manual download pdf (Page 47)

cabling guidelines C-6

Cabling

The 1000BASE-T product is designed to operate over Category 5 cabling.To further

enhance the operation,the cabling standards have been amended.The latest standard is

Category 5e, which defines a higher level of link performance than is available with

Category 5 cable.

If installing new cable, we recommend using Category 5e cable, since it costs about the

same as Category 5 cable.If using the existing cable, be sure to have the cable plant

tested by a professional who can verify that it meets or exceeds either ANSI/EIA/TIA-

568-A:1995 or ISO/IEC 11801:1995 Category 5 specifications.

Length

The maximum distance limitation between two pieces of equipment is 100 m, as per the

original Ethernet specification.The end-to-end link is called the "channel."

TSB-67 defines the "Basic Link" which is the portion of the link that is part of the

building infrastructure.This excludes patch and equipment cords.The maximum basic

link length is 295 feet (90 m).

Return Loss

Return loss measures the amount of reflected signal energy resulting from impedance

changes in the cabling link.The nature of 1000BASE-T renders this measurement very

important;if too much energy is reflected back on to the receiver, the device does not

perform optimally.

Unlike 10BASE-T and 100BASE-TX,which use only two of the four pairs of wires

within the Category 5, 1000BASE-T uses all four pairs of the twisted pair. Make sure

all wires are tested — this is important.

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Netgear FS 750 User Manual Page 47