1.5.3 Supported Fiber Optic Cables - Siemens SIMATIC NET RUGGEDCOM RS940G Installation Manual

Follow these recommendations for copper data cabling in high electrical noise
environments:
•
•
•
1.5.3 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)
a
Laser optimized.
RUGGEDCOM RS940G
Installation Manual, 01/2021, C79000-G8976-1036-07
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
1300 500
1.5.3 Supported Fiber Optic Cables
Distance (m)
100Base-FX 1000Base-SX
— 275
2000
— 550
2000
— 550
2000
— 550
2000
Introduction
10GBase-SR
33
— —
82
— —
300
— —
400
— —
5