Cabletron Systems 2E43-51 User Manual page 36

Chapter 3: Installation
Position X
(crossed over)
1. RX+
2. RX-
3. TX+
4. NC
A schematic of a crossover cable is shown in
not cross over, use the switch on the FE-100TX to internally cross over
the RJ45 port.
NOTE:
RX+/RX– and TX+/TX–
must share a common
color pair.
Figure 3-9 Cable Pinouts - RJ45 Crossover Cable
Connect an FE-100TX to a twisted pair segment as follows:
1. Ensure that the device connected to the other end of the segment is
powered on.
2. Connect the twisted pair segment to the module by inserting the RJ45
connector on the twisted pair segment into the RJ45 port on the
module shown in
3-12
5. NC
6. TX-
7. NC
8. NC
Figure 3-8 FE-100TX Crossover Switch
TO
RJ45 Port
RX+
1
RX– 2
TX+
3
TX–
6
Figure 3-10.
Position =
(not crossed over)
1. TX+
x
=
2. TX-
10
100
3. RX+
FE-100TX
4. NC
Figure
RJ45 to RJ45
2E43-51/2E43-51R User's Guide
5. NC
6. RX-
7. NC
8. NC
16651_05
3-9. If the wires do
TO
10BASE-T Device Port
RX+
1
RX–
2
TX+
3
TX–
6
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