Gigabit Ethernet 1000Base-Tx Cabling Recommendations; Supported Fiber Optic Cables - Siemens SIMATIC NET RUGGEDCOM RST2228 Equipment Manual

Introduction
1.4.2 Gigabit Ethernet 1000Base-TX cabling recommendations
1.4.2

Gigabit Ethernet 1000Base-TX cabling recommendations

The IEEE 802.3ab Gigabit Ethernet standard defines 1000 Mbps Ethernet
communications over distances of up to 100 m (328 ft) using all 4 pairs in 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. For
reliable, error-free data communication, new and pre-existing communication paths
should be verified for TIA/EIA-568-A compliance.
The following table summarizes the relevant cabling standards:
Follow these recommendations for copper data cabling in high electrical noise
environments:
•
•
•
1.4.3

Supported fiber optic cables

The following fiber optic cable types are supported under the stated conditions.
Cable Type Wavelength (nm) Modal Bandwidth
OM1 (62.5/125)
OM2 (50/125)
a
OM3 (50/125)
a
OM4 (50/125)
12
Cabling 1000Base-
category TX compliant
< 5 No
5 Yes
5e Yes
6 Yes
> 6 Yes
Data cable lengths should be as short as possible, preferably 3 m (10
ft) 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. Power and data cables should intersect
at 90° angles when necessary to reduce inductive coupling.
Shielded/screened cabling can be used when required. Care should be taken to
avoid the creation of ground loops with shielded cabling.
(MHz·km)
850 200
1300 500
850 500
1300 500
850 1500
1300 500
850 3500
Required action
New wiring infrastructure required.
Verify TIA/EIA-568-A compliance.
No action required. New installations should
be designed with Category 5e or higher.
No action required.
Connector and wiring standards to be determined.
Distance (m)
100Base-FX 1000Base-SX
—
2000
—
2000
—
2000
—
Equipment Manual, 10/2023, C79000-G8976-1359-19
10GBase-SR
275 33
— —
550 82
— —
550 300
— —
550 400
RUGGEDCOM RST2228