Siemens X-400 - Manual (Page 30)

System Description of SCALANCE X-400
Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
30 C79000-G8976-C186-03
2.2.5 1000Base-LX
Transmission Rate
The transmission rate of the optical gigabit ports is 1 Gbps.
Transmission Mode
Transmission with 1000Base-LX is defined in the IEEE 802.3z standard and is
specified as 1000 Mbps transmission rate and full duplex.
Transmission Medium
Data is transmitted over single mode FOC. The wavelength is 1310 nm.
The core diameter of the single mode FOC is 9 or 10 µm; the light source is a laser
diode. To transmit a signal, only one mode (light beam) is used greatly reducing
dispersion. As a result, the maximum range of single mode FOC is greater than
that of multimode FOC.
Transmission Range
The maximum transmission range (segment length) is 10 km for single mode FOC.
Connectors
SC duplex female connectors are used.