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FIC-1GBE/FIC-2GBE 149
Figure 171 Ethernet cable
Making Ethernet cables
You can use category 5 twisted-pair cables to make Ethernet cables. A category 5
twisted-pair cable is composed of eight wires that are identified and grouped by
colors of the outer insulator. Usually a solid color wire and a white/solid color wire
are organized in pairs. But sometimes, wires are also paired by color dots.
Ethernet cables fit into two categories: straight-through and crossover.
■ Straight-through cable: The wires are crimped in the RJ-45 connectors at both
ends in the same order. The cable is used for connecting a terminal device (for
example, PC or router) to a HUB or LAN switch. The cables delivered with the
router are straight-through cables.
■ Crossover cable: The wires are crimped in the RJ-45 connectors at both ends in
different orders. The cable is used for connecting two terminal devices (for
example, PC and router). You can make cables as needed.
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In making network cables, shielded cables are preferred for electromagnetic
compatibility sake.
The interface cables in the standard package of RT-FIC-FE cards are
straight-through cables.
Connecting the Interface
Cable
Step 1: Plug one end of the cable to an Ethernet port on the router and another
end to the device to be connected. (For a PC or router, use a straight-through
cable; for a HUB or LAN switch, use a crossover cable.)
Step 2: Power on the router and check the behavior of the LINK LED on the FIC-FE
panel: ON means that a link is present and OFF means that no link is present. In
the latter case, check the line status.
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CAUTION: Before you connect a port, read its label carefully; a wrong connection
can cause damages to the interface card and even the device.
FIC-1GBE/FIC-2GBE
Introduction FIC-1GBE/FIC-2GBE, the 1-port/2-port 10Base-T/100Base-TX/1000Base-T Ethernet
electrical interface card, is used for router-to-LAN communication.
The cards support:
■ 100 meters (328.1 ft.) of transmission segment over the category-5
twisted-pair cable.