Cabletron Systems EMC37-12 User Manual

EMC37-12

10BASE-T TO 10BASE-2

12 PORT ETHERNET MEDIA CONVERTER

USER’S GUIDE

CABLETRON SYSTEMS, P. O. Box 5005, Rochester, NH 03866-5005

NOTICE

Cabletron Systems reserves the right to make changes in specifications and other
information contained in this document without prior notice. The reader should in all cases
consult Cabletron Systems to determine whether any such changes have been made.

The hardware, firmware, or software described in this manual is subject to change without
notice.

IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FOR ANY
INCIDENTAL, INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGES
WHATSOEVER (INCLUDING BUT NOT LIMITED TO LOST PROFITS) ARISING
OUT OF OR RELATED TO THIS MANUAL OR THE INFORMATION CONTAINED
IN IT, EVEN IF CABLETRON SYSTEMS HAS BEEN ADVISED OF, KNOWN, OR
SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH DAMAGES.

This electric hazard symbol appears in the EMC37-12 User’s Guide. Read
all instructions following this symbol. Failure to follow the instructions
appearing with this symbol could result in the presence of an electric
hazard which has the potential to cause injury.

© Copyright April 1995 by:
Cabletron Systems, Inc., P.O. Box 5005, Rochester, NH 03866-5005

All Rights Reserved
Printed in the United States of America

Part Number: 9031434 April 1995

LANVIEW
Windows
Ethernet
CompuServe
CHAMP

is a registered trademark of Cabletron Systems, Inc.
is a registered trademark of Microsoft Corp.
is a trademark of Xerox Corp.

is a registered trademark of CompuServe.

is a trademark of AMP, Inc.

Printed On Recycled Paper

EMC37-12 USER’S GUIDE i

FCC NOTICE

This device complies with Part 15 of the FCC rules. Operation is subject to the following
two conditions: (1) this device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation.

NOTE:

digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment uses, generates, and can radiate radio frequency
energy and if not installed in accordance with the operator’s manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is
likely to cause interference in which case the user will be required to correct the
interference at his own expense.

WARNING:

approved by the party responsible for compliance could void the user’s authority to
operate the equipment.

This equipment has been tested and found to comply with the limits for a Class A

Changes or modifications made to this device which are not expressly

DOC NOTICE

This digital apparatus does not exceed the Class A limits for radio noise emissions from
digital apparatus set out in the Radio Interference Regulations of the Canadian
Department of Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites
applicables aux appareils numériques de la class A prescrites dans le Règlement sur le
brouillage radioélectrique édicté par le ministère des Communications du Canada.

This equipment is in the 1st Class Category (information equipment to be used in commercial and/or
industrial areas) and conforms to the standards set by the Voluntary Control Council for Interference
by Information Technology Equipment (VCCI) aimed at preventing radio interference in commercial
and/or industrial areas.

Consequently , when used in a residential area or in an adjacent area thereto, radio interference may be
caused to radios and TV receivers, etc.

Read the instructions for correct handling.

ii EMC37-12 USER’S GUIDE

VCCI NOTICE

CABLETRON SYSTEMS, INC.

PROGRAM LICENSE AGREEMENT

IMPORTANT

This document is an agreement between you, the end user, and Cabletron Systems, Inc. (“Cabletron”)
that sets forth your rights and obligations with respect to the Cabletron software program (the
“Program”) contained in this package. The Program may be contained in firmware, chips or other
media. BY UTILIZING THE ENCLOSED PRODUCT, YOU ARE AGREEING TO BECOME
BOUND BY THE TERMS OF THIS AGREEMENT, WHICH INCLUDES THE LICENSE AND
THE LIMITATION OF WARRANTY AND DISCLAIMER OF LIABILITY. IF YOU DO NOT
AGREE TO THE TERMS OF THIS AGREEMENT , PR OMPTLY RETURN THE UNUSED
PRODUCT TO THE PLACE OF PURCHASE FOR A FULL REFUND.

: Before utilizing this product, carefully read this License Agreement.

CABLETRON SOFTWARE PROGRAM LICENSE

1. LICENSE.
package subject to the terms and conditions of this License Agreement.

You may not copy, reproduce or transmit any part of the Program except as permitted by the
Copyright Act of the United States or as authorized in writing by Cabletron.

2. OTHER RESTRICTIONS. You may not reverse engineer, decompile, or disassemble the
Program.

3. APPLICABLE LAW. This License Agreement shall be interpreted and governed under the
laws and in the state and federal courts of New Hampshire. You accept the personal jurisdiction and
venue of the New Hampshire courts.

You have the right to use only the one (1) copy of the Program provided in this

EMC37-12 USER’S GUIDE iii

EXCLUSION OF WARRANTY AND

DISCLAIMER OF LIABILITY

1. EXCLUSION OF
Cabletron in writing, Cabletron makes no warranty, expressed or implied, concerning the
Program (including Its documentation and media).

CABLETRON DISCLAIMS ALL WARRANTIES, OTHER THAN THOSE SUPPLIED
TO YOU BY CABLETRON IN WRITING, EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF
MERCHANTABLITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH
RESPECT TO THE PROGRAM, THE ACCOMPANYING WRITTEN MATERIALS,
AND ANY ACCOMPANYING HARDWARE.

2. NO LIABILITY FOR CONSEQ
CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES
WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF
BUSINESS, PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS
INFORMATION, SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR RELIANCE
DAMAGES, OR OTHER LOSS) ARISING OUT OF THE USE OR INABILITY TO
USE THIS CABLETRON PRODUCT, EVEN IF CABLETRON HAS BEEN ADVISED
OF THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME STATES DO NOT
ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR
CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR ON THE DURATION OR
LIMITATION OF IMPLIED WARRANTEES IN SOME INSTANCES THE ABOVE
LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU.

WARRANTY. Except as may be specifically provided by

UENTIAL DAMAGES. IN NO EVENT SHALL

UNITED STATES GOVERNMENT RESTRICTED RIGHTS

The enclosed product (a) was developed solely at private expense; (b) contains “restricted
computer software” submitted with restricted rights in accordance with Section 52227-19
(a) through (d) of the Commercial Computer Software - Restricted Rights Clause and its
successors, and (c) in all respects is proprietary data belonging to Cabletron and/or its
suppliers.

For Department of Defense units, the product is licensed with “Restricted Rights” as
defined in the DoD Supplement to the Federal Acquisition Regulations, Section 52.227­7013 (c) (1) (ii) and its successors, and use, duplication, disclosure by the Government is
subject to restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical
Data and Computer Software clause at 252.227-7013. Cabletron Systems, Inc., 35
Industrial Way, Rochester, New Hampshire 03867.

iv EMC37-12 USER’S GUIDE

TABLE OF CONTENTS

CHAPTER 1 INTRODUCTION

1.1 USING THIS MANUAL................................................................1-1

1.2 GETTING HELP..........................................................................1-2

1.3 EMC37-12 OVERVIEW...............................................................1-2

1.4 EMC37-12 FEATURES...............................................................1-3

1.5 EMC37-12 SPECIFICATIONS ....................................................1-3

CHAPTER 2 INSTALLATION

2.1 UNPACKING THE EMC37-12.....................................................2-1

2.2 INSTALLING THE EMC37-12.....................................................2-1

2.2.1 Rack Mounting the EMC37-12 .......................................2-2

2.2.2 Free-Standing Shelf or Tabletop Installation..................2-3

2.3 CONNECTING THE EMC37-12 TO THE POWER SOURCE.....2-4

CHAPTER 3 CONNECTING TO THE NETWORK

3.1 CONNECTING A TWISTED PAIR SEGMENT

TO THE EMC37-12.....................................................................3-1

3.2 CONNECTING A 10BASE-2 THIN-NET SEGMENT...................3-2

3.3 FINISHING THE INSTALLATION................................................3-3

CHAPTER 4 USING THE LANVIEW LEDS

APPENDIX A CABLE REQUIREMENTS

A.1 10BASE-T TWISTED PAIR REQUIREMENTS...........................A-1

A.2 10BASE-2 THIN-NET NETWORK REQUIREMENTS.................A-2

APPENDIX B TWISTED PAIR WIRING TABLES

B.1 TWISTED PAIR WIRING FROM AN EMC37-12 TO A

PUNCH DOWN BLOCK..............................................................B-2

B.2 TWISTED PAIR WIRING FROM A PUNCH DOWN

BLOCK TO A 10BASE-T DEVICE...............................................B-5

EMC37-12 USER’S GUIDE v

CHAPTER 1

INTRODUCTION

Welcome to the Cabletron Systems
manual provides installation instructions and specifications for the twelve
port Ethernet Media Converter (EMC).

EMC37-12 User’s Guide

. This

1.1 USING THIS MANUAL

Read through this manual to gain an understanding of the features and
capabilities of the EMC37-12. You should have a general working
knowledge of Ethernet IEEE 802.3 10BASE-T and 10BASE-2 type data
communications networks and their physical layer components when
installing the EMC37-12.

Chapter 1,
specifications.

Chapter 2,
19-inch rack or as a standalone device.

Introduction

Installation

, describes EMC37-12 features and

, describes how to install the EMC37-12 into a

Chapter 3,
segments to the EMC37-12.

Chapter 4,
EMC37-12 LEDs to monitor link and power status.

Appendix A,
requirements for the EMC37-12.

Appendix B,
twisted pair connector.

Connecting to the Network

Using the LANVIEW LEDs

Cable Requirements

T wisted Pair Wiring Tables

, explains how to connect netw ork

, describes how to use the

lists twisted pair and thin coax cable

, lists pinouts for the 50-pin

EMC37-12 USER’S GUIDE 1-1

CHAPTER 1:

INTRODUCTION

1.2 GETTING HELP

If you need additional support related to the EMC37-12, or if you have
any questions, comments, or suggestions concerning this manual, contact
Cabletron Systems Technical Support:

By phone ..........................[phone]

Monday-Friday; 8am - 8pm Eastern Time

By CompuServe...............GO CTRON from any ! prompt

By Internet mail [e-mail]

1.3 EMC37-12 OVERVIEW

The EMC37-12 converts Ethernet IEEE 802.3 10BASE-T signals to
Ethernet IEEE 802.3 10BASE-2 signals. The rear panel has a 50-pin
CHAMP connector (RJ-71) that supports twelve twisted pair segments.
The front panel has twelve 10BASE-2 thin coax ports that use BNC type
connectors and RG-58 thin-net cable. Each 10BASE-2 port is equipped
with a switch to provide internal termination. Figure 1-1 shows the
EMC37-12 ports.

Each of the rear panel twisted pair ports has a corresponding thin-net port
on the front panel.

For example

: Twisted pair Port 1 converts signals to thin-net port 1,

twisted pair port 2 converts signals to thin-net port 2, etc.

Front View

EMC37-12 ETHERNET MEDIA CONVERTER WITH LANVIEW

TPLINK

XMT

PWR

RCV
POK

12 11 10 9 8 7 6 5 4 3 2 1

EMC37-12

ETHERNET MEDIA CONVERTER

12 10987654321

11

1X 12X

Rear View

TERM

1-2 EMC37-12 USER’S GUIDE

Figure 1-1. The EMC37-12

EMC37-12 FEATURES

1.4 EMC37-12 FEATURES

Automatic Transmit Port Disable

The EMC37-12 automatically disables the Transmit port when its
corresponding Receive port does not have a link.

LANVIEW Diagnostic LEDs

Cabletron equips the EMC37-12 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 EMC37-12 has a 50-pin CHAMP connector (RJ-71)
that supports twelve twisted pair segments. The front panel has twelve
10BASE-T thin-net ports. Each thin-net port uses a BNC style receptacle
with a gold center contact.

1.5 EMC37-12 SPECIFICATIONS

This section describes operating specifications for the EMC37-12.
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 inches

(43.2 L x 23.9 W x 4.3 H cm)

Weight: 4 lbs (1.8 Kg)

Power Requirements

Input: 100 to 125 Vac, 1.0A

200 to 240 Vac, 0.5A
50 to 60 Hz

Environmental Requirements

Operating Temperature: +5° to +40°C (41° to 104°F)

Non-operating Temperature: -30

Operating Humidity: 5 to 95% (non-condensing)

EMC37-12 USER’S GUIDE 1-3

°

to +90°C (-22° to 194°F)