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Cabletron Systems EMC38-12 , 1.4 EMC38-12 FEATURES, 1.5 EMC38-12 SPECIFICATIONS,

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EMC38-12 FEATURES

EMC38-12 USER’S GUIDE Page 1-3

1.4 EMC38-12 FEATURES

Automatic Transmit Port Disable

The EMC38-12 automatically disables the Transmit port when its

corresponding Receive port does not have a link.

Full Duplex Ethernet Support

All of the EMC38-12 ports support Full Duplex Ethernet provided that

the device at the other end of the port supports Full Duplex Ethernet also.

Full Duplex Ethernet allows the EMC38-12 to transmit and receive

signals simultaneously for a 20 Megabit bandwidth through-put.

LANVIEW Diagnostic LEDs

Cabletron equips the EMC38-12 with a visual diagnostic and monitoring

system called LANVIEW. LANVIEW LEDs help you quickly identify

Power and Link status.

Connectivity

The rear panel of the EMC38-12 has a 50-pin Champ connector (RJ-71)

that supports twelve twisted pair segments. The front panel has twelve

10Base-FL multimode ST ports. Each multimode ST port has a Receive

connector and a Transmit connector.

1.5 EMC38-12 SPECIFICATIONS

This section describes operating speciﬁcations for the EMC38-12.

Cabletron Systems reserves the right to change these speciﬁcations at any

time without notice.

Physical Specifications

Dimensions: 17” L x 9.4” W x 1.7” H

Weight: 4 lbs.

Power Requirements

Input: 100 to 125 Volts AC, 1.0A

200 to 240 Volts AC, 0.5A

50 to 60 Hz

Contents

Main Page EMC38-12 USERS GUIDE i NOTICE ii FCC NOTICE DOC NOTICE iii VCCI NOTICE CABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT iv CABLETRON SOFTWARE PROGRAM LICENSE EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITY UNITED STATES GOVERNMENT RESTRICTED RIGHTS Page TABLE OF CONTENTS vii TABLE OF CONTENTS Page CHAPTER 1 INTRODUCTION 1.1 USING THIS MANUAL 1.2 GETTING HELP 1.3 EMC38-12 OVERVIEW 1.4 EMC38-12 FEATURES 1.5 EMC38-12 SPECIFICATIONS Page CHAPTER 2 INSTALLATION 2.2 INSTALLING THE EMC38-12 2.1 UNPACKING THE EMC38-12 2.2.1 Rack Mounting the EMC38-12 2.2.2 Free-Standing Shelf or Tabletop Installation 7 FT. 21 IN. 6 IN. 18 IN. 2.3 CONNECTING THE EMC38-12 TO THE POWER SOURCE CHAPTER 3 CONNECTING TO THE NETWORK 3.1 CONNECTING A TWISTED PAIR SEGMENT TO THE EMC38-12 3.2 CONNECTING A FIBER OPTIC LINK SEGMENT Page 3.3 FINISHING THE INSTALLATION CHAPTER 4 USING THE LANVIEW LEDS 4.1 PWR (Power) 4.2 XMT (Transmit) EMC38-12 4.3 RCV (Receive) 4.4 TPLNK (Twisted Pair Link) 4.5 FOLNK (Fiber Optic Link) APPENDIX A CABLE REQUIREMENTS A.1 10Base-T TWISTED PAIR REQUIREMENTS A.2 10Base-FL MULTIMODE FIBER REQUIREMENTS Page Page B-2 EMC38-12 USERS GUIDE B.1 TWISTED PAIR WIRING FROM AN EMC38-12 TO A PUNCH DOWN BLOCK Note: Pins 25 and 50 on the Champ connector are not used. Table B-1. EMC38-12 to a Punch Down Block EMC38-12 USERS GUIDE Page B-3 Table B-1. EMC38-12 to a Punch Down Block (Continued) Page B-4 EMC38-12 USERS GUIDE Table B-1. EMC38-12 to a Punch Down Block (Continued) EMC38-12 USERS GUIDE Page B-5 B.2 TWISTED PAIR WIRING FROM A PUNCH DOWN BLOCK TO A 10Base-T DEVICE Table B-2. Punch Down Block to a 10Base-T Device Page B-6 EMC38-12 USERS GUIDE Table B-2. Punch Down Block to a 10Base-T Device (Continued) EMC38-12 USERS GUIDE Page B-7 Figure B-1. Punch Down Block Pins A B C D Page B-8 EMC38-12 USERS GUIDE POWER SUPPLY CORD GERMAN: SPANISH: FRENCH: