Cabletron Systems 6E132-25 用户手册
6E128-26, 6E138-25, 6E129-26 and 6E139-25 User’s Guide
B-1
APPENDIX B
FE-100TX, FE-100FX AND FE-100F3
SPECIFICATIONS
The 6E12X-26 supports three Fast Ethernet Interface Modules:
•
FE-100TX
•
FE-100FX
•
FE-100F3
This appendix provides the specifications for these modules.
B.1
FE-100TX
The FE-100TX uses an RJ45 connector supporting Category 5
Unshielded Twisted Pair (UTP) cabling with an impedance between 85
and 111 ohms.
Unshielded Twisted Pair (UTP) cabling with an impedance between 85
and 111 ohms.
The slide switch on the FE-100TX determines the crossover status of the
cable pairs. If the switch is on the
cable pairs. If the switch is on the
X
side, the pairs are internally crossed
over. If the switch is on the
=
side, the pairs are not internally crossed
shows the pinouts for the FE-100TX in both positions.
Figure B-1
FE-100TX Pinouts
Position X
(crossed over)
(crossed over)
1. RX+
2. RX-
3. TX+
4. NC
2. RX-
3. TX+
4. NC
5. NC
6. TX-
7. NC
8. NC
6. TX-
7. NC
8. NC
Position =
(not crossed over)
(not crossed over)
1. TX+
2. TX-
3. RX+
4. NC
2. TX-
3. RX+
4. NC
5. NC
6. RX-
7. NC
8. NC
6. RX-
7. NC
8. NC
FE-100TX
10
16651_05
100
=
x