1000Base-Lx / 100Base-Fx; Signaling Contact - Siemens SCALANCE X-300 Series Operating Instructions Manual

4.5.2.2

1000Base-LX / 100Base-FX

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 or 1550 nm.
The core diameter of the single mode FO cable 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 distance (segment length) is 120 km for 1000Base-LX
transmission.
IE Switches X-300 connector technology
SC duplex female connectors are used.
Connector technology of the IE Switch X‑300EEC
FC duplex female connectors with the following characteristics are used:
● Maximum range: up to 3 km
● Wavelength: 1310 nm
● Transmission mode: Multimode
● Standard: 100Base-FX
4.5.3

Signaling contact

The signaling contact (relay contact) is a floating switch with which error/fault states can be
signaled by breaking the contact.
SCALANCE X-300
Operating Instructions, 11/2019, A5E01113043-24
4.5 Interfaces and signaling contact of the switches
Description of the device
93