Cabletron Systems 2H23-50R, 2H33-37R APPENDIX B FE-100TX, FE-100FX, AND FE-100F3 SPECIFICATIONS

Models: 2H23-50R 2H33-37R

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APPENDIX B

APPENDIX B

FE-100TX, FE-100FX, AND FE-100F3

SPECIFICATIONS

The 2H23-50R supports three Fast Ethernet Interface Modules:

FE-100TX (Section B.1)

FE-100FX (Section B.2)

FE-100F3 (Section B.3)

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.

NOTE

To ensure proper operation, use only Category 5 Unshielded Twisted Pair (UTP) cabling that has 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 X side, the pairs are internally crossed over. If the switch is on the = side, the pairs are not internally crossed over. Figure B-1shows the pinouts for the FE-100TX in both positions.

Position X (crossed over)

1.RX+ 5. NC

2.RX- 6. TX-

3.TX+ 7. NC

4.NC 8. NC

x

 

 

 

=

 

 

 

 

 

10

100

FE-100TX

Position =

(not crossed over)

1.TX+ 5. NC

2.TX- 6. RX-

3.RX+ 7. NC

4.NC 8. NC

16651_05

Figure B-1 FE-100TX RJ45 Pinouts

2H23-50R/2H33-37R User’s Guide

B-1

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Cabletron Systems 2H23-50R, 2H33-37R manual APPENDIX B FE-100TX, FE-100FX, AND FE-100F3 SPECIFICATIONS, B.1 FE-100TX