Cabletron Systems TPT Bedienungsanleitung

TPT

10BASE-T

TWISTED PAIRTRANSCEIVER

USER’S MANUAL

CABLETRON SYSTEMS, P.O. Box 5005, Rochester, NH 03867-5005

NOTICE

The information presented in this document, including descriptions of hardware,

ﬁrmware, and software, is subject to change without notice and should not be

construed as a commitment by Cabletron Systems. Cabletron Systems assumes no

responsibility for any errors that may appear in this manual. The reader should in

all cases contact Cabletron Systems to determine whether changes have been made

affecting the manual.

IN NO EVENT SHALL CABLETRON SYSTEMS BE HELD LIABLE FORANY

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, KNEW, OR SHOULD HAVE KNOWN, THE

POSSIBILITY OF SUCH DAMAGES.

The information in this document is proprietary and is not to be copied in any form,

or by any means, without the written consent of Cabletron Systems.

Cabletron Systems Inc.

P.O. Box 5005, Rochester, NH 03867-5005

Printed in the United States of America

Order number: 9030346-02 January 1992

LANVIEW

TPT

TPMIM

MMAC

, and

LAN-MD

are trademarks of Cabletron

Systems Inc.

Velcro

is a registered trademark of Velcro Industries, B.V.

FCC NOTICE

WARNING

: This equipment has been tested and found to comply with the limits

for a Class A digital device, pursuant to Part 15 of 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 at his own expense ot correct the

interference.

If this equipment does cause interference to radio or television, which can be

determined by turning the equipment off and on, the user is encouraged to try to

correct the interference by one or more of the following measures:

• Re-orient the receiving antenna.

• Relocate the transceiver with respect to the antenna.

• Move the transceiver away from the receiver.

• Plug the Ethernet device into a different outlet so that the device and the

receiver are on different branch circuits.

If necessary, the user should consult the dealer or an experienced radio/ television

technician for additional suggestions. The user may ﬁnd the following booklet

prepared by the Federal Communication Commission helpful:

“How to Identify and Resolve Radio TV Interference Problems”

This booklet is available from the U.S. Government Printing Ofﬁce, Washington

D.C. 20402 - Stock No. 004-000-00345-4

iii

CONTENTS

CHAPTER 1 - INTRODUCTION

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

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

1.3 THE TPT 10BASE-T TWISTED PAIR

TRANSCEIVER..........................................1-3

CHAPTER 2 - REQUIREMENTS AND

SPECIFICATIONS

2.1 NETWORK DESIGN GUIDELINES ...........2-1

2.2 OPERATING SPECIFICATIONS...............2-5

CHAPTER 3 - INSTALLINGTHETPT

3.1 UNPACKING THE TPT..............................3-1

3.2 MOUNTING THE TPT................................3-2

3.3 CONNECTING THE TPT TO THE

NETWORK.................................................3-3

3.3.1 Setting the SQE Switch .................3-3

3.3.2 Connecting to an Ethernet Dev .....3-4

Contents

3.3.3 Connecting the TPT to a Twisted

Pair Segment ................................3-5

3.3.4 Providing Strain Relief...................3-8

CHAPTER 4 -TESTING AND TROUBLESHOOTING

4.1 INSTALLATION CHECK-OUT...................4-1

4.2 USING LANVIEW ......................................4-3

1-1

CHAPTER 1

INTRODUCTION

Welcome to Cabletron Systems’TPT™ 10BASE-T

Twisted Pair Transceiver User’s Manual. We have

designed this manual as a simple installation and reference

guide to the TPT. The TPT provides 10BASE-T compliant

twisted pair connectivity to your Ethernet network.You

should read this manual thoroughly to fully understand the

TPT and its capabilities.

1.1 USINGTHIS MANUAL

Chapter 1,

Introduction

, is an overview of the TPT

10BASE-T Twisted Pair Transceiver. This chapter shows

how to use the TPT in an Ethernet network and explains

the TPT’s features.

Chapter 2,

Requirements and Speciﬁcations

contains

network design guidelines for connecting the TPT to the

network. The chapter also contains the speciﬁcations for

the TPT.

INTRODUCTION

1-2

Chapter 3,

Installing the TPT

contains steps for

unpacking the TPT, setting the SQE switch, connecting the

transceiver to the network, and connecting the transceiver

to an Ethernet device.

Chapter 4,

Testing and Troubleshooting

contains

procedures for verifying that theTPT is operational. It also

describes the LANVIEW™ LEDs, and how you can use

them to troubleshoot network problems.

Before you install the TPT, you should have a general

working knowledge of Ethernet or IEEE 802.3 type data

communications networks and their physical layer

components.

1.2 GETTING HELP

If you need additional support concerning Cabletron

Systems TPT, or if you have comments, questions, or

suggestions concerning this manual, feel free to contact

Cabletron Systems’Technical Support at:

Cabletron Systems

35 Industrial Way

P.O. Box 5005

Rochester, NH 03867-5005

Phone: (603) 332-9400

INTRODUCTION

1-3

1.3 THETPT 10BASE-TTWISTED PAIR

TRANSCEIVER

Connections

The TPT (Fig. 1-1) is designed to connect two Ethernet

devices. Because the TPT is small, it can connect to

Ethernet devices directly, or you can connect it by means

of an AUI cable. The TPT fully conforms to IEEE 802.3

10BASE-T speciﬁcations and guarantees the ﬂexibility to

connect to networks using IEEE 802.3 or EthernetVersion

1 or 2 equipment.

Figure 1-1 TPT

AUI Port LANVIEW

LEDs

FRONT VIEW

SQE

SN b

SQE

XMT

RCV

COL

LNK

PWR

Enable Disable

TPT

802.3 10BASE-T TRANSCEIVER

WITH LANVIEW

SIDE VIEW SIDE VIEW

TOP VIEW

SQE Switch RJ-45 Port

92 SERIES

INTRODUCTION

1-4

The TPT 10BASE-T Twisted Pair Transceiver lets you use

existing twisted pair wiring as part of an Ethernet network.

Distance and Cable Type

The TPT supports an unshielded twisted pair (UTP)

segment, up to 100 meters (328 feet) of 24AWG UTP with

an impedance of 85-110 ohms.

Signal Quality Error (SQE) Test

The TPT has a Signal Quality Error (SQE) Test Switch

that lets you turn on or off the SQE (“heartbeat”) test

function. With SQE Test turned on, the transceiver

generates a test signal after each packet transmission that

checks the collision circuit and path between the TPT and

the device attached to the transceiver’s AUI port.

NOTE:

You must disable the SQE test if you attach the

TPT to Version 1 equipment or to a repeater. Version 1

equipment and repeaters interpret the SQE test pulse as a

collision, which signiﬁcantly slows the network response

time.

Polarity Detection and Correction

The TPT incorporates a Polarity Detection and Correction

feature. This feature lets the TPT pass data to and from the

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