RuggedCom RUGGEDBACKBONE RX5000 - Manual (Page 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.