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26 PC/104-Plus – CPU-1461 Module
The Eurotech Ethernet Transceiver
To establish an Ethernet connection an Ethernet Transceiver must be used. Eurotech supplies a Transceiver
that can be placed between the J20 connector of the CPU board and the network cable.
RJ45 Connector
To CPU Board
NetConnector
Figure 14. The Eurotech Ethernet Adapter
The green led is fixed, and signals the correct connection of the module. The yellow led blinks when there is
activity (data IN/OUT) on the net connection.
With RJ45 connectors, only twisted pair cables can be used.
Important Note. Connection to a 100BASE-TX hub for 100 Mbps operation requires the use of
Cat.5 Unshielded Twisted-Pair (UTP) cable or Cat.5 Shielded Twisted-Pair (STP) cable. The
maximum length between the 100BASE-TX hub and the adapter is 100 meters. Connection to a
10BASE-T hub for 10 Mbps operation requires a Cat.3, 4 or 5 UTP cable or Cat.5 STP cable. The
preferred maximum cable length between the CPU module and the Ethernet adapter is 10 cm
(4”)
.