Siemens X-400 - Manual (Page 26)

System Description of SCALANCE X-400
Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
26 C79000-G8976-C186-03
2.2.2 1000Base-TX
Transmission Rate
The transmission rate of the electrical gigabit ports is 1 Gbps.
Transmission Mode
The transmission mode for 1000Base-TX is specified in the IEEE 802.3ab stan-
dard.
At 1 Gbps, autonegotiation is optional.
Two communication modes are possible:
● Half duplex
● Full duplex
Transmission Medium
Data is transmitted over an 8-wire twisted pair cable.
Notice
For data transmission at 1 Gbps, at least Cat 5e twisted-pair cabling with 4x2 wires
is required. With a four wire cable (2x2), the maximum possible data rate is 100
Mbps.
Transmission Range
The maximum transmission distance (segment length) is 100 m.
Connectors
The connectors used are 8-pin RJ-45 jacks.