Ruggedcom RUGGEDBACKBONE RX5000 Manual do Utilizador descarregar pdf (Página 29)

RuggedBackbone™ RX5000

Installation Guide

Chapter 3

Installation

Gigabit Ethernet 1000Base-TX Cabling

Recommendations 23

Figure 26: RJ45 Ethernet Jack

Table 5: RJ45 Ethernet Pinout

RJ45 Pin 10/100Base-Tx 10/100/1000Base-Tx

1 RX+ A+

2 RX- A-

3 TX+ B+

4 NC C+

5 NC C-

6 TX- B-

7 NC D+

8 NC D-

Section 3.5.2

Gigabit Ethernet 1000Base-TX Cabling Recommendations

The IEEE 802.3ab Gigabit Ethernet standard defines 1000 Mbit/s Ethernet communications over distances of

up to 100 meters using 4 pairs of category 5 (or higher) balanced, unshielded twisted-pair cabling. For wiring

guidelines, system designers and integrators should refer to the Telecommunications Industry Association (TIA)

TIA/EIA-568-A wiring standard that characterizes minimum cabling performance specifications required for

proper Gigabit Ethernet operation. To ensure reliable, error-free data communications, new and preexisting

communication paths should be verified for TIA/EIA-568-A compliance. Table 6, “Cabling Categories And

1000Base-TX Compliance” summarizes the relevant cabling standards as they apply to 100Base-TX

connections.

Table 6: Cabling Categories And 1000Base-TX Compliance

Cabling Category

1000Base-

TX Compliant

Required Action

< 5 No New wiring infrastructure required.

5 Yes Verify TIA/EIA-568-A compliance.

5e Yes No action required. New installations should be designed with Category 5e or higher.

6 Yes No action required.

> 6 Yes Connector and wiring standards to be determined.

Follow these recommendations for copper data cabling in high electrical noise environments:

• Data cable lengths should be as short as possible, ideally limited to 3m (10') in length. Copper data cables

should not be used for inter-building communications.

• Power and data cables should not be run in parallel for long distances, and should be installed in separate

conduits. When necessary, power and data cables should intersect at a 90° angle to reduce inductive coupling.

• Optionally, shielded/screened cabling can be used. The cable shield should be grounded at one single point to

avoid the generation of ground loops.

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