ABB NE820, User Manual

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Section 3 Interface Modules
4FG-4RG, 4 SFP Slots and 4-Gbit Copper Ports
The 4FG-4RG interface has four SFP slots supporting Ethernet BaseFX/X and four
RJ-45 connectors supporting Ethernet 10/100/1000BaseTX/T. Each SFP slot can
hold one SFP transceiver for copper or fibre cable. Fibre transceiver distances range
from 550 m (0.34 mi) to 120 km (74,6 mi).
For supported transceivers see section on SFP transceivers.
All ports support category 5e cable or better and can handle cable lengths up to 150
m (492 ft).
Interface Specifications
* Note: Railway installation close to the rails. To minimise the risk of interference, a shielded cable is recommended when
the cable is located inside 3 m boundary to the rails and connected to this port. The cable shield should be properly
connected (360°) to an earthing point within 1 m from this port. This earthing point should have a low impedance
3BSE080635 25
4FG-4RG
Fixed copper ports (RJ-45)
Electrical specification IEEE std 802.3. 2005 Edition
Data rate 10, 100 or 1000 Mbit/s
Duplex Full or half, Manual or Auto
Circuit type TNV-1
Transmission range Up to 150 m with CAT5e cable or better*
Isolation to All other
Connection RJ-45 auto MDI/MDI-X
Shielded cable Not required, except when installed in Railway
applications as signalling and telecommunications
apparatus and located close to rails*
Conductive housing Yes
Number of ports 4