Cabletron Systems 2H28-08R - Manual (Page 135)

2H28-08R SmartSwitch 2208 User’s Guide B-1
APPENDIX B
FE-100TX, FE-100FX AND FE-100F3
SPECIFICATIONS
The 2H28-08R 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 slide switch on the FE-100TX determines the crossover status of 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
over. Figure B-1 shows the pinouts for the FE-100TX in both positions.
Figure B-1 FE-100TX Pinouts
NOTE
The FE-100TX uses an RJ45 connector supporting Unshielded
Twisted Pair (UTP) cabling, which has an impedance of 85 to
111 ohms.
Position X
(crossed over)
1. RX+
2. RX-
3. TX+
4. NC 5. NC
6. TX-
7. NC
8. NC
Position =
(not crossed over)
1. TX+
2. TX-
3. RX+
4. NC 5. NC
6. RX-
7. NC
8. NC
FE-100TX
10
16651_05
100
= x