Scalance Xb004-1G - Siemens SCALANCE XB-000 Operating Instructions Manual

3.4.4

SCALANCE XB004-1G

Transmission rate
The transmission rate of the optical Fast Ethernet port is 1000 Mbps.
Transmission mode
The transmission mode for 1000Base-SX is specified in the IEEE 802.3z standard.
Since the full duplex mode and the transmission rate cannot be modified for optical
transmission, autonegotiation cannot be used.
Transmission medium
Data transmission is over multimode fiber-optic cable (FOC). The wavelength is 850 nm.
Multimode fiber-optic cable with a core diameter of 50 µm is used. Fiber-optic cables with a
core diameter of 62.5 µm are not recommended for 1000Base-SX because this reduces the
maximum segment length drastically.
The outer diameter of the FOC is 125 µm.
Sender
The light source is an "eye safe" class 1 laser with a wavelength of 850 nm (EN60825-1).
Range
Depending on the fiber-optic cable used, the maximum transmission range (segment length)
is 750 m when using SIMATIC NET fiber-optic multimode cable with SC duplex connectors
or 550 m when using a standard multimode FO cable.
Connectors
The cables are connected to SC sockets.
SCALANCE XB-000
Operating Instructions, 12/2015, A2B00077300-06
Description of the device
3.4 FO port (fiber optic)
31