Siemens X-400 - Manual (Page 99)

Installation and Commissioning
Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
C79000-G8976-C186-03
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6.6.6 Connectors for Fiber-Optic Cables
Gigabit Transmission with FOC
Data transmission at 1 Gbps is over multimode FOC or single mode FOC. In both
cases, the fiber-optic cable is plugged into the SC duplex socket with the SC du-
plex plug. The connectors have polarity reversal protection mechanisms.
When a media module is inserted, port 1 is to the front and port 2 to the rear.
Notice
Fiber-optic cable connectors are susceptible to contamination and mechanical
damage to the face. Protect open connections with the supplied dust caps.
Figure 6-18 SC Duplex plug with gigabit media module MM492-2LD