Cabletron Systems TPXMIM-20, TPXMIM-22, TPXMIM-34, TPXMIM-33 Installation Manual

TPXMIM

INSTALLATION

GUIDE

TPXMIM-20

ETHERNET

CLN

RCV LNK RCV LNK
6
7
8
9

10

SN

10BASE-T
ETHERNET

A B C

TPXMIM-22

A B C

ETHERNET

CLN

RCV LNK

11

RCV LNK RCV LNK

12

1
2
3
4
5

E
P

I

M

2

X
3

X
4

X

6

13

7

14

8

15

9

16

10

17
18
19
20
21
22

11

X

12

X

13

X

14

X

15

X

16

X

SN

5

X

6

X

7

X

8

X

9

X

10

X

17

X

18

X

19

X

20

X

21

X

22

X

10BASE-T
ETHERNET

1
2
3
4
5

E
P

I

M

2

X
3

X
4

X

5

X

6

X

7

X

8

X

9

X

10

X

TPXMIM-33

SN

ETHERNET

CLN

10BASE-T
ETHERNET

A B C

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

EPIM

EPIM SEL

RCV LNK

E
P

I

M

12

1

TPXMIM-34

SN

13
14
15
16
17
18
19
20
21
22
23
24

ETHERNET

RCV LNK

10BASE-T
ETHERNET

CLN

24

13

A B C

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

EPIM

EPIM SEL

RCV LNK

E
P

I

M

12

1

CABLETRON SYSTEMS, P.O. Box 5005, Rochester, NH 03867-0505

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.

© Copyright May 1994 by:
Cabletron Systems, Inc.
P.O. Box 5005
Rochester, NH 03867-0505
All Rights Reserved

Printed in the United States of America

Part Number: 9031145 May 1994

SPECTRUM
EMM-E6, MMAC-8FNB, MMAC-5FNB, MMAC-3FNB

Cabletron Systems, Inc.

Ethernet
VT-220
CompuServe

and

LANVIEW

is a registered trademark of Xerox Corp.

and

VT-320

are trademarks of Digital Equipment Corp.

is a registered trademark of CompuServe, Inc.

are registered trademarks and

TPXMIM, EMME

, and

EPIM

are trademarks of

,

TPXMIM Installation Guide

Printed on

recycled paper.

i

NOTICE

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.

ii

TPXMIM Installation Guide

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, PROMPTLY 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.
in this package subject to the terms and conditions of this License Agreement.

You have the right to use only the one (1) copy of the Program pro vided

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

2. O

3. APPLICABLE LA

THER RESTRICTIONS. You may not reverse engineer, decompile, or

disassemble the Program.

W. 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.

TPXMIM Installation Guide

iii

EXCLUSION OF WARRANTY

AND DISCLAIMER OF LIABILITY

1. EXCLUSION OF
Cabletron in writing, Cabletron makes no warranty , e xpressed 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
MA TERIALS, AND ANY A CCOMPANYING HARDWARE.

WARRANTY. Except as may be specifically provided by

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.

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

TPXMIM Installation Guide

CONTENTS

CONTENTS

CHAPTER 1 INTRODUCTION

1.1 Using This Manual.......................................................................... 1

1.2 TPXMIM Features .......................................................................... 2

1.3 Overview......................................................................................... 3

1.4 The TPXMIM and Management Modules....................................... 4

1.5 The TPXMIM and MMAC Backplane.............................................. 5

1.6 LANVIEW LEDs.............................................................................. 6

1.7 Network Management Capabilities................................................. 7

1.8 Related Material ............................................................................. 7

1.9 Getting Help.................................................................................... 8

CHAPTER 2 SPECIFICATIONS/REQUIREMENTS

2.1 Operating Specifications................................................................. 9

2.2 TPXMIM Network Requirements.................................................. 11

2.2.1 TPXMIM-20/22 RJ45 Connector Specifications..............11

2.2.2 TPXMIM-33/34 Champ Connector Specifications........... 11

2.3 Network Requirements................................................................. 13

2.3.1 10BASE-T Twisted Pair Network..................................... 13

2.3.2 Multimode Fiber Optic Network.......................................15

2.3.3 Single Mode Fiber Optic Network.................................... 16

2.3.4 Thin-Net Network............................................................. 17

2.4 Transceiver Requirements ........................................................... 17

CHAPTER 3 INSTALLATION/CONFIGURATION

3.1 Unpacking the TPXMIM................................................................ 19

3.2 Installing the TPXMIM .................................................................. 19

3.3 Configuring Boards and Ports ...................................................... 21

3.3.1 Assigning an Entire TPXMIM Board................................ 22

3.3.2 Assigning Individual TPXMIM Ports ................................ 24

3.4 Adding/Replacing EPIMs.............................................................. 25

3.5 Connecting to the Network...........................................................26

3.5.1 Attaching a Twisted Pair Segment to

the TPXMIM-20/22 .......................................................... 27

3.5.2 Attaching a Twisted Pair Segment to

the TPXMIM-33/34 .......................................................... 28

3.5.3 Connecting a Twisted Pair Segment to an EPIM-T......... 30

3.5.4 Connecting an AUI Cable to an EPIM-X.......................... 32

TPXMIM Installation Guide

v

CONTENTS

3.5.5 Connecting a Fiber Optic Cable to an EPIM-F1/F2,

or EPIM-F3.......................................................................33

3.5.6 Connecting a Thin-Net Segment to an EPIM-C...............35

3.5.7 Connecting an AUI Cable to an EPIM-A..........................37

CHAPTER 4 TESTING/TROUBLESHOOTING

4.1 Pre-Installation Test......................................................................39

4.2 Installation Check-Out...................................................................40

4.3 Using LANVIEW............................................................................42

4.4 Troubleshooting Checklist.............................................................45

APPENDIX A TWISTED PAIR WIRING TABLES

APPENDIX B EPIM SPECIFICATIONS

vi

TPXMIM Installation Guide

CHAPTER 1

INTRODUCTION

The

Twisted Pair Switching Media Interface Module (TPXMIM)

switchable multi-channel Ethernet repeater that resides in a Multi Media

®

Access Center

(MMAC) hub. This manual explains how to:

• install the TPXMIM

• connect the module to an existing network

• troubleshoot any installation/operational problems.

In addition, Appendices contain TPXMIM and Ethernet Port Interface
Module (EPIM) environmental and operational specifications.

This manual serves as a simple installation and troubleshooting reference
guide for the TPXMIM. To gain a full understanding of this device and its
capabilities, and to help eliminate any potential problems during or after
installation, please be sure to read and understand all of the instructions
and information in this document and in the release notes.

is a

1.1 USING THIS MANUAL

You should have a general working knowledge of Ethernet or IEEE 802.3
type data networks prior to installing the TPXMIM. The following
summarizes the organization of this manual.

Chapter 1,

Introduction

overvie w of the de vice’s capabilities. This chapter concludes with a list of
related documentation and how to obtain additional support related to
TPXMIM installation and operation.

Chapter 2,

Specifications/Requirements

network requirements to consider before installing the TPXMIM.

, discusses TPXMIM features, and provides an

, provides specifications and

TPXMIM Installation Guide

Page 1

CHAPTER 1:

INTRODUCTION

Chapter 3,

Installation/Configuration,

provides instructions/guidelines
on how to install the TPXMIM into an MMAC-FNB, set the board or
individual ports to a specific MMAC Channel, install/replace an optional
EPIM, and connect segments to your device using an optional EPIM.

Chapter 4,

T esting/Troubleshooting

, provides some testing procedures to

ensure the TPXMIM is working properly before installing it into your

®

network. This chapter also details the TPXMIM LANVIEW

LEDs that
enable you to quickly diagnose network/operational problems and
includes a troubleshooting checklist.

Appendix A,

T wisted Pair Wiring Tables

, provides the wiring tables to

assist in using a punchdown block to wire twisted pair segments.

Appendix B,

EPIM Specifications

, lists the specifications for each

optional EPIM available for the TPXMIM.

1.2 TPXMIM FEATURES

LANVIEW

Cabletron provides a visual diagnostic and status monitoring system,
called LANVIEW, with the TPXMIM. LANVIEW LEDs help you
quickly identify device, port, and physical layer problems.

“Switching”

The TPXMIM brings “bank switching” and individual “port assignment”
to the MMAC chassis. Using any multi-channel management module
(i.e., the EMME or EMM-E6), you can assign either the entire board
(bank switching) or each individual port (port assignment) to any of the
three Ethernet channels on the MMAC-FNB (i.e., Channel A, B, or C).

Connectivity

The TPXMIM series offers four connector versions:

• TPXMIM-20 — nine RJ45 ports; one EPIM port

• TPXMIM-22 — twenty-one RJ45 ports; one EPIM port

• TPXMIM-33 — one 50-pin Champ connector; one EPIM port

• TPXMIM-34 — two 50-pin Champ connectors; one EPIM port

Page 2

TPXMIM Installation Guide

OVERVIEW

MIB Navigation

Assigning the TPXMIM board or individual ports to specific Ethernet
channels, or obtaining TPXMIM board or port statistics, requires a multi­channel management device (e.g., EMME or EMM-E6) and access to a
MIB walking tool. The EMME or EMM-E6 allows MIB access both
locally (i.e., Local Management) and remotely (i.e., additional Cabletron
Remote Management packages).

For information on how to use the Local Management MIB w alking tool,
refer to either the EMME or EMM-E6 Local Management manual. For
information on how to use a Remote Management MIB walking tool,
refer to documentation specific to that Remote Management package.

Compliance

Each TPXMIM utilizes Repeater Interface Controller (RIC) technology.
RIC technology integrates all repeater functionality into one integrated
circuit. This makes the TPXMIM fully 10Base-T IEEE 802.3i compliant.

Fault Tolerance

By performing its own repeater functions, the TPXMIM greatly enhances
the fault tolerance of the MMA C. By not relying on one central module to
perform repeater functions, TPXMIMs eliminate a single point of failure.

In addition, the TPXMIM provides port segment partitioning and
reconnection. This feature assures that problem segments do not affect
any other segments. If the TPXMIM detects 31 consecutive collisions on

µ

any segment, or if a collision detector remains on for more than 110

s,
the TPXMIM automatically partitions that segment. When the TPXMIM
receives a good packet from the segment, it automatically reconnects.

1.3 OVERVIEW

The

Twisted Pair Switching Media Interface Module (TPXMIM)

provides board or individual port connectivity to any MMAC-FNB
Ethernet Channel (i.e., Channels A, B, or C). All ports initially default to
Channel B upon power up and require a Management Information Base
(MIB) change to access any other channel. Refer to Chapter 3,

Installation/Configuration

, for additional information on how to assign

the TPXMIM board or individual ports to specific channels.

TPXMIM Installation Guide

Page 3

CHAPTER 1:

INTRODUCTION

The TPXMIM repeats (regenerates, retimes, and transmits) each packet it
receives, assuring data integrity and maximum data path distance. Using
Repeater Interface Controller (RIC) technology, each TPXMIM complies
fully with the 10Base-T IEEE 802.3i standard connectivity for Ethernet
communications over shielded or unshielded twisted pair cabling.

In addition to providing full connectivity to the MMAC backplane, each
TPXMIM provides the option of installing an external Ethernet Port
Interface Module (EPIM). Each TPXMIM provides one slot on the front
panel for your choice of an optional EPIM. EPIMs provide an additional
Ethernet connection for various media types (twisted pair, fiber optic, and
thick or thin Ethernet coaxial cable). The following list contains the
currently available EPIMs and their media types:

EPIM-T

•

EPIM-F1/EPIM-F2

•

: 10Base-T Twisted Pair Segment Interface Module

: Multimode Fiber Optic Segment

Interface Modules using SMA/ST style connectors

EPIM-F3

•

EPIM-C

•

EPIM-A/EPIM-X

•

: Single Mode Fiber Optic Segment Interface Module

: Thin-net Coaxial Segment Interface Module

: AUI Cable Segment Interface Modules

Since the TPXMIM is SNMP compliant, you can control and monitor the
device using various SNMP Network Management packages including
Cabletron Systems’

SPECTRUM® Portable Management Applications

(SPMA) products.

1.4 THE TPXMIM AND MANAGEMENT MODULES

The TPXMIM requires a multichannel management module (i.e., EMME,
EMM-E6, etc.) in slot #1 (farthest right slot) of the MMAC. The multi­channel management module provides the capability of setting the board
or individual ports to Channels other than Channel B (default), and
repeating to any Channel (i.e., Channel A, B, or C). In addition, the use of
a multi-channel management module provides helpful statistical
information for the TPXMIM including:

• the number of bytes received

• the number of frames received, filtered, and transmitted

• the total number of errors and a breakdown of those errors.

Page 4

TPXMIM Installation Guide

THE TPXMIM AND MMAC BACKPLANE

Multi-channel management modules provide bridging and optional
routing control for Ethernet Channels A, B, and C on the MMAC
backplane, and Channel D from the module faceplate. All Channels
access the same shared memory, allowing a management module to
bridge any or all packets it receives for any given Channel. In addition,
the EMM-E6 provides options for two additional Ethernet connections
(channels E and F) that access WAN, ATM or FDDI networks.

For additional information regarding the EMME or EMM-E6, refer to
specific module documentation.

1.5 THE TPXMIM AND MMAC BACKPLANE

The Multi Media Access Center with Flexible Network Bus
(MMAC-FNB) provides the TPXMIM with power, Ethernet A Bus
(Channel A), and FNB (Channel B and C) access (Figure 1-1).

Power & Management Bus

Ethernet A Bus

Flexible Network Bus

Ethernet B Bus
Ethernet C Bus

Figure 1-1. MMAC Flexible Network Bus

Two types of MMACs currently support FNB architecture — shunting
and non-shunting. MMACs equipped with shunting backplanes allow
modules operating on the B or C bus to continue communicating
regardless of whether there is an empty slot or an A Channel module
between them in the chassis. The following table gives the part numbers
of the MMAC chassis that have shunting capabilities.

TPXMIM Installation Guide

Page 5

CHAPTER 1:

INTRODUCTION

Table 1-1.

MMACs with Shunting Capabilities

MMAC Chassis Part #

FC

MMAC-3FNB
MMAC-5FNB
MMAC-8FNB
MMAC-M8FNB

000000000 or above

CC

000000000 or above

CG

000000000 or above

DK

000000000 or above

MMAC-M5FNB all
MMAC-M3FNB all

Note:

are available. For additional information on shunting backplanes, or how
to upgrade your hub, contact Cabletron Systems Technical Support.

If your MMAC does not have a shunting backplane, upgrade kits

Ethernet Channel A operates over the MMAC Power and Management
Bus, Cabletron’s original Ethernet channel.

1.6 LANVIEW LEDs

The TPXMIM incorporates the Cabletron Systems LANVIEW® Status
Monitoring and Diagnostics System. LANVIEW LEDs can help diagnose
any problems, such as a power failure or a cable fault.

Each port on the TPXMIM-20/22 modules include the following
LANVIEW LEDs:

•a

•a

RCV
LNK

The TPXMIM-33/34 modules utilize the above LANVIEW LEDs for all
ports except the EPIM ports. The EPIMs for the TPXMIM-33/34 use the
following LANVIEW LEDs:

(receive) LED to indicate network activity on the port
(link) LED to indicate the connection status of the port.

•a

Page 6

RCV

(receive) LED to indicate network activity on the port

TPXMIM Installation Guide

NETWORK MANAGEMENT CAPABILITIES

•a

SEL

(select) LED to indicate port association selection of the

SEL

EPIM port. The
EPIM is always active.

LED on the TPXMIM-33 is always lit since the

However

, the TPXMIM-34 provides the
software selectable option of using the EPIM instead of
Champ connector port 13. In other words, on the
can have

either

the EPIM or Champ connector port 13 active at an y

TPXMIM-34

10Base-T

, you

given time. This allows a total of 24 connections.

The TPXMIM includes the following LEDs to indicate Channel status:

•a

CLN

• an

(collision) LED for each channel (i.e., A, B, and C)

Ethernet

LED to indicate any connection to a particular Ethernet

channel (i.e., A, B, or C).

Note:

If at least one port connects to a particular Channel, the Ethernet

LED for that Channel remains ON.

Chapter 4, Testing/Troubleshooting, provides detailed descriptions of
each TPXMIM LANVIEW LED.

1.7 NETWORK MANAGEMENT CAPABILITIES

You can control and manage the TPXMIM using any SNMP network
management system. The EMME or EMM-E6 network management
capabilities provide the necessary management tools for the TPXMIM to
operate at its full capacity.

Your ability to set up parameters with network management assures
optimal performance of the TPXMIM. For further information, refer to
the applicable Network Management Package User’s Manual.

1.8 RELATED MATERIAL

Use the following manuals to supplement the procedures and other
technical data provided in this manual. This manual references procedures
in these manuals, where appropriate, but does not repeat them.

TPXMIM Installation Guide

Page 7

CHAPTER 1: INTRODUCTION

Cabletron Systems’ MMAC Overview and Setup Guide
Cabletron Systems’ Ethernet Management Module (EMME)

User’s Guide
Cabletron Systems’ EMM-E6 Local Management User’s Guide

1.9 GETTING HELP

If you need additional support related to the Cabletron Systems
TPXMIM, or if you have an y questions, comments, or suggestions related
to this manual, contact Cabletron Systems Technical Support by:

Mail: Cabletron Systems, Inc.,

P.O. Box 5005
Rochester, NH 03867-0505

Phone: [phone], Mon-Fri 8AM to 8PM EST

CompuServe

®

: GO CTRON from any ! prompt

Internet Mail: [e-mail]

Before calling Cabletron Systems Technical Support, please have:

• a description of the failure

• a description of any action(s) already taken to resolve the problem
(e.g., changing mode switches, rebooting the unit, etc.)

• a description of your network environment (layout, cable type, etc.)

• network load and frame size at the time of trouble (if known)

• the serial and revision numbers of all Cabletron products in the
TPXMIM network

• the device history (i.e., hav e you returned the device before, is this a
recurring problem, etc.)

• any previous Return Materials Authorization (RMA) numbers.

Page 8 TPXMIM Installation Guide

CHAPTER 2

SPECIFICATIONS/REQUIREMENTS

This chapter contains TPXMIM operating specifications and general
10BASE-T networking guidelines. Before attempting to install the
TPXMIM or any additional EPIMs, review the requirements and
specifications outlined in this chapter.

Caution: Your network installation must meet the conditions, guidelines,
specifications, and requirements included in this chapter to ensure
satisfactory performance of this equipment. Failure to follow these
guidelines may produce poor network performance.

2.1 OPERATING SPECIFICATIONS

This section includes the operating specifications for the TPXMIM.
Cabletron reserves the right to change these specifications at any time
without notice.

Channels B/C Repeater Functionality

Preamble

Input: Minimum of 40 bits. Maximum equals the

number of bits received.

Output: Minimum of 64 bits (last two bits are 1,1).

Maximum equals the number of bits
received plus 6.

JAM Output: If a collision occurs on one of the

segments, the TPXMIM sends a pattern of
1,0 to the other segments.

TPXMIM Installation Guide Page 9

CHAPTER 2: SPECIFICATIONS/REQUIREMENTS

Minimum Packet 96 bits including preamble (the TPXMIM
Repeated: extends packet fragments using the JAM

[1,0] data pattern).

FAULT Protection: Each segment disconnects itself from the

other segments following 31 consecutive
collisions, or if the collision detector of a
segment remains ON longer than 110 µs.
The TPXMIM automatically reconnects
the problem segment after it transmits or
receives one packet without a collision.

Environmental Requirements

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

Non-Operating
Temperature: -30 to +80C (-22° to 176°F)

Operating

Humidity: 5 to 95% (non-condensing)

Safety

This unit meets safety requirements of UL 1950, CSA C22.2
No. 950, and EN 60950; the EMI requirements of FCC Class A and
EN 55022 Class A; and the EMC requirements of EN 50082-1.

Warning: It is the responsibility of the person who sells the system
of which the TPXMIM will be a part to ensure that the total system
meets allowed limits of conducted and radiated emissions.

Physical

Dimensions: 34.04 D x 29.21 H x 5.08 W cm

Weight: ~ 2 lbs.

Page 10 TPXMIM Installation Guide

(13.4 D x 11.5 H X 2.0 W inches)

TPXMIM NETWORK REQUIREMENTS

2.2 TPXMIM NETWORK REQUIREMENTS

The following sections provide TPXMIM network port specifications.

2.2.1 TPXMIM-20/22 RJ45 Connector Specifications

The TPXMIM-20 and the TPXMIM-22 provide RJ45 connectors to
attach twisted pair segments to the network. Figure 2-1 sho ws the pinouts
for the RJ45 connectors.

8. Not Used

7. Not Used

6. Transmit -

5. Not Used

4. Not Used

3. Transmit +

2. Receive -

1. Receive +

8
7
6
5

4

3
2
1

Figure 2-1. RJ45 Network Ports

2.2.2 TPXMIM-33/34 Champ Connector Specifications

The TPXMIM-33 and TPXMIM-34 pro vide 50-pin Champ connectors to
attach twisted pair segments to the network as shown in Figure 2-2.
Table 2-1 shows the pinouts for the Champ connector.

24

12

Figure 2-2. 50-Pin Champ Connectors

TPXMIM Installation Guide Page 11

13

1

CHAPTER 2: SPECIFICATIONS/REQUIREMENTS

Table 2-1. 50-Pin Champ Connector Pinouts

Pin Signal Wire Color Pin Signal Wire Color

1 RX 1- Blue/White 26 RX 1+ White/Blue
2 TX 1- Orange/White 27 TX 1+ White/Orange
3 RX 2- Green/White 28 RX 2+ White/Green
4 TX 2- Brown/White 29 TX 2+ White/Brown
5 RX 3- Gray/White 30 RX 3+ White/Gray
6 TX 3- Blue/Red 31 TX 3+ Red/Blue
7 RX 4- Orange/Red 32 RX 4+ Red/Orange
8 TX 4- Green/Red 33 TX 4+ Red/Green
9 RX 5- Brown/Red 34 RX 5+ Red/Brown
10 TX 5- Gray/Red 35 TX 5+ Red/Gray
11 RX 6- Blue/Black 36 RX 6+ Black/Blue
12 TX 6- Orange/Black 37 TX 6+ Black/Orange
13 RX 7- Green/Black 38 RX 7+ Black/Green
14 TX 7- Brown/Black 39 TX 7+ Black/Brown
15 RX 8- Gray/Black 40 RX 8+ Black/Gray
16 TX 8- Blue/Yellow 41 TX 8+ Yellow/Blue
17 RX 9- Orange/Yellow 42 RX 9+ Yellow/Orange
18 TX 9- Green/Yellow 43 TX 9+ Yellow/Green
19 RX 10- Brown/Yellow 44 RX 10+ Yellow/Brown
20 TX 10- Gray/Yellow 45 TX 10+ Yellow/Gray
21 RX 11- Blue/Violet 46 RX 11+ Violet/Blue
22 TX 11- Orange/Violet 47 TX 11+ Violet/Orange
23 RX 12- Green/Violet 48 RX 12+ Violet/Green
24 TX 12- Brown/Violet 49 TX 12+ Violet/Brown
25 N/C Gray/Violet 50 N/C Violet/Gray

Page 12 TPXMIM Installation Guide

NETWORK REQUIREMENTS

2.3 NETWORK REQUIREMENTS

Take care in planning and preparing the cabling and connections for your
network. The quality of the connections, the length of cables, and other
conditions of the installation play critical roles in determining the
reliability of your network. The following sections describe cable
requirements for each media type.

2.3.1 10BASE-T Twisted Pair Network

When connecting a 10BASE-T Twisted Pair Segment at any of the
10BASE-T Twisted Pair hub interfaces (Ethernet Twisted Pair Segments
[on the faceplate] or the Twisted Pair Ethernet Port Interface Module
[EPIM-T]), ensure the network meets the following requirements:

• Length - The IEEE 802.3 10BASE-T standard requires that

10BASE-T devices transmit over a 100 meter (328 foot) link using
22-24 AWG unshielded twisted pair wire. However, cable quality
largely determines maximum link length. If you use high quality,
low attenuation cable, you can achieve link lengths of up to 200
meters. Cable delay limits maximum link length to 200 meters,
regardless of the cable type.

Note: Losses introduced by connections at punch down blocks and
other equipment reduce total segment length. For each connector or
patch panel in the link, subtract 12 meters from the total length of
your cable.

• Insertion Loss - Between frequencies of 5.0 and 10.0 MHz, the

maximum insertion loss must not exceed 11.5 dB. This includes the
attenuation of the cables, connectors, patch panels, and reflection
losses due to impedance mismatches in the link segment.

• Impedance - Cabletron Systems 10BASE-T Twisted Pair products

work on twisted pair cable with 75 to 165 ohms impedance.
Unshielded twisted pair cables typically have an impedance of
between 85 to 110 ohms. You can also use shielded twisted pair
cables, such as IBM Type 1 cable, but keep in mind that this cable
has an impedance of 150 ohms.

TPXMIM Installation Guide Page 13

CHAPTER 2: SPECIFICATIONS/REQUIREMENTS

The high impedance of the IBM Type 1 cable increases signal
reflection. However, due to cable shielding, and the subsequent lack
of crosstalk between shielded pairs, this signal reflection has little
effect on the quality of the received signal.

• Jitter - Intersymbol interference and reflections can cause jitter in
the bit cell timing, resulting in data errors. 10BASE-T links must not
generate more than 5.0 nsec of jitter. Make sure your cable meets
10BASE-T link impedance requirements to rule out jitter as a
concern.

• Delay - The maximum propagation delay of a 10BASE-T link

segment must not exceed 1000 nsec. This 1000 nsec maximum
delay limits the maximum link segment length to no greater than 200
meters.

• Crosstalk - Signal coupling between different cable pairs within a

multi-pair cable bundle causes crosstalk. 10BASE-T transceiver
design alleviates concerns about crosstalk, providing the cable
meets all other requirements.

• Noise - Crosstalk, or externally induced impulses, can cause noise.

Impulse noise may cause data errors if the impulses occur at very
specific times during data transmission. Generally, noise is not a
concern. If you suspect noise-related data errors, you may need to
reroute the cable or eliminate the source of the impulse noise.

• Temperature - Multi-pair PVC 24 AWG telephone cables typically

have an attenuation of approximately 8-10 dB/100 m at 20°C (68°F).
The attenuation of PVC insulated cable varies significantly with
temperature. At temperatures greater than 40°C (104°F), we
strongly recommend using plenum-rated cable to ensure attenuation
remains within specification.

Page 14 TPXMIM Installation Guide

NETWORK REQUIREMENTS

2.3.2 Multimode Fiber Optic Network

When connecting a multimode fiber optic link segment to the hub (using
an EPIM-F1/F2), ensure the network meets the following requirements:

• Cable T ype - Use the EPIM-F1 and EPIM-F2 for the following

multimode fiber optic media:

- 50/125 µm fiber optic cabling

- 62.5/125 µm fiber optic cabling

- 100/140 µm fiber optic cabling

• Attenuation - You must test the fiber optic cable with a fiber optic

attenuation test set adjusted for an 850 nm wavelength. This test
verifies that the signal loss in a cable falls within the following
acceptable levels:

- 13.0 dB or less for a 50/125 µm fiber cable segment

- 16.0 dB or less for a 62.5/125 µm fiber cable segment

- 19.0 dB or less for a 100/140 µm fiber cable segment

• Budget and Propagation Delay - When you determine the

maximum fiber optic cable length to incorporate fiber runs into your
network, you must calculate and consider the fiber optic budget (a
total loss of 10.0 dB or less is permissible between stations) and total
network propagation delay.

To determine the fiber optic budget, combine the optical loss due to
the fiber optic cable, in-line splices, and fiber optic connectors.
Typical loss for a splice and connector (together) equals 1 dB or less.

Network propagation delay is the amount of time it takes a packet to
travel from the sending device to the receiving device. Total
propagation delay allowed for the entire network must not exceed

25.6 µsec in one direction (51.2 µsec round trip). If the total
propagation delay between any two nodes on the network exceeds

25.6 µsec, you must use bridges.

TPXMIM Installation Guide Page 15

CHAPTER 2: SPECIFICATIONS/REQUIREMENTS

• Length - The maximum possible multimode fiber optic cable length
is 2 km (2187.2 yards). Howe ver , IEEE 802.3 FOIRL specifications
specify a maximum of 1 km (1093.6 yards).

2.3.3 Single Mode Fiber Optic Network

When connecting a single mode fiber optic link segment to the hub (using
an EPIM-F3), ensure the network meets the following requirements:

• Cable T ype - Fiber optic link segments should consist of 8/125 to
12/125 µm single mode fiber optic cabling. You can also use 62.5/
125 µm multimode cable with the EPIM-F3; however, use of
multimode cable causes greater optical loss, and limits the possible
distance to 2 km.

• Attenuation - You must test the fiber optic cable with a fiber optic
attenuation test set adjusted for a 1300 nm wavelength. This test
verifies that the signal loss in a cable falls within the acceptable le vel
of 10.0 dB or less for any given single mode fiber optic link.

• Budget and Propagation Delay - When you determine the

maximum fiber optic cable length to incorporate fiber runs into your
network, you must calculate and consider the fiber optic budget (a
total loss of 10.0 dB or less is permissible between stations) and total
network propagation delay.

To determine the fiber optic budget, combine the optical loss due to
the fiber optic cable, in-line splices, and fiber optic connectors.
Typical loss for a splice and connector (together) equals 1 dB or less.

Network propagation delay is the amount of time it takes a packet to
travel from the sending device to the receiving device. Total
propagation delay for the entire network must not exceed 25.6 µsec
in one direction (51.2 µsec round trip). If the total propagation delay
exceeds 25.6 µsec, you must use bridges.

Page 16 TPXMIM Installation Guide

TRANSCEIVER REQUIREMENTS

• Length - If you meet all system budgets, the maximum single mode

fiber optic cable length can reach 5 km (3.1 miles) with bridges at
each segment end. However, IEEE 802.3 FOIRL specifications
specify a maximum of 1 km (1093.6 yards).

2.3.4 Thin-net Network

When connecting a thin-net (coaxial) segment to your hub (using an
EPIM-C), ensure your network meets the following requirements:

• Cable T ype - Use only 50 ohm RG-58A/U type coaxial cable for

thin-net cable segments.

• Length - The thin-net segment must not exceed 185 meters.

• Terminators - Terminate each end of a thin-net segment.

• Connectors - You can use up to 29 tee-connectors throughout the

length of the cable segment for host connections.

If you use an excessive number of barrel connectors within the cable
segment (e.g., finished wall plates with BNC feed-throughs), you
may need to reduce the number of host connections. For special
network design, contact Cabletron Systems Technical Support.

• Grounding - For safety, ground only one end of a thin-net segment.

Do NOT connect EPIM BNC ports to earth ground.

Warning: Connecting a thin-net segment to earth ground at more
than one point could produce dangerous ground currents.

2.4 TRANSCEIVER REQUIREMENTS

When you connect an external network segment to an EPIM-A in your
hub through a transceiver, that transceiver must meet IEEE 802.3
standards or Ethernet version 1.0 or 2.0 requirements. The transceiver
must also have Signal Quality Error (SQE) disabled.

TPXMIM Installation Guide Page 17

CHAPTER 3

INSTALLATION/CONFIGURATION

This chapter contains instructions for:

• unpacking the TPXMIM

• installing the TPXMIM into a Multi Media Access Center (MMAC)

• configuring the TPXMIM board or individual ports to run on
MMAC backplane Channels

• adding/replacing optional Ethernet Port Interface Modules

• connecting your device to a network.

3.1 UNPACKING THE TPXMIM

Unpack the TPXMIM as follows:

1. Remove the shipping material covering the TPXMIM.

2. Carefully remove the module from the shipping box. Leave the
module in its non-conductive bag until you are ready to install it.

3. Visually inspect the module. If you notice any signs of damage,
contact Cabletron Systems Technical Support immediately.

3.2 INSTALLING THE TPXMIM

Installing the TPXMIM into any MMAC hub is an easy operation and
requires no special skills or tools. Howe ver, when you install your device,
keep the following in mind:

• You may install the TPXMIM in any slot except for slot 1 (farthest

slot to the right) of the MMAC chassis.

TPXMIM Installation Guide Page 19

CHAPTER 3: INSTALLATION/CONFIGURATION

• We suggest positioning the TPXMIM next to any contiguous RIC

MIMs or MIMs directly controlled by the hub managing device
(e.g., EMME, EMM-E6, etc.). This does not apply to shunting
MMAC-FNBs, where the data path remains unbroken, and allows
non-interrupted communication.

Caution: Use all static precautions when handling boards.

Install the TPXMIM into the MMAC-FNB (backplane) as follows:

1. Holding the TPXMIM by the front panel, or by the edges of the board,
align the bottom and top edges of the board with the guide slots. Make
sure that both of the edges of the card rest in the guide slots.

2. Slide the TPXMIM (Figure 3-1) into the desired slots of the MMAC
card cage.

3. Firmly press the module connections into the backplane. Do not try to
force the module into place or use the knurled knobs to draw the
module into the backplane. Forcing a misaligned module into place
can damage the TPXMIM or the MMAC backplane.

MMAC M8FNB

Knurled Knob

TPXMIM-20

ETHERNET

RCVLNK RCV LNK
6
7
8
9
10

SN

10BASE-T
ETHERNET

TPXMIM

A B C

CLN

1
2
3
4
5

E
P

I

M

2
X

3
X

4
X

5
X

6
X

7
X

8
X

9
X

10
X

Figure 3-1. Installing the TPXMIM

Page 20 TPXMIM Installation Guide

INSTALLING THE TPXMIM

SN

TPXMIM-34

ETHERNET

A B C

CLN

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

RCV LNK
13
14
15
16
17
18
19
20
21
22
23
24

RCV LNK

TPXMIM-20

E
P

I

M

ETHERNET

A B C

RCV LNK RCV LNK

1
2
3
4
5

6
7
8
9

10

CLN

TPXMIM-22

E
P

I

M

11
12
13
14
15
16
17
18
19
20
21
22

ETHERNET

A B C

11

X

12

X

13

X

RCV LNK

RCV LNK RCV LNK

1
2
3
4
5

6
7
8
9

10

CLN

SN

TPXMIM-32

ETHERNET

A B C

CLN

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

RCV LNK

4. Secure the module to the MMAC chassis by tightening the knurled
knobs. If you do not tighten the knurled knobs, vibration can cause the
module to lose contact with the backplane and disrupt your network.

5. Power-up the MMAC (if it isn’t already ON).

TPXMIM-33

EPIM

EPIM

Figure 3-2. TPXMIM LANVIEW LEDs

After the system boot procedure, the LEDs (see Figure 3-2) should be in
the following conditions:

• Ethernet Channel LEDs ON or OFF, depending on the port

connection status.

Note: TPXMIM defaults to CH B on initial power-up.

• Appropriate EPIM LEDs ON (see section 3.5, Connecting to the

Network, to obtain the appropriate LED status for EPIMs).

• Appropriate RCV LEDs flashing and LNK LEDs ON to show

TPXMIM Installation Guide Page 21

connection of individual ports.

CHAPTER 3: INSTALLATION/CONFIGURATION

3.3 CONFIGURING BOARDS AND PORTS

The TPXMIM provides state of the art flexibility by allowing you to
assign whole boards or individual ports to any MMAC Channel (i.e.,
Channel A, B, or C). In other words, you can:

• assign an entire TPXMIM to any one Channel

• assign any number of individual TPXMIM ports to any Channel.

This flexibility provides the advantage of grouping users together based
on file server or network usage, ultimately maximizing the use of
bandwidth. In addition, since the TPXMIM uses only one slot, a single
MMAC can contain up to 168 user ports while providing bridging and
routing capabilities.

Setting TPXMIM boards or individual ports to a specific MMAC Channel
requires the use of a MIB walking tool and access through a multi­channel management device (i.e., EMME, EMM-E6, etc.). In other
words, you must set specific MIB instances pertaining to the TPXMIM
board as a whole or the individual ports.

You can set MIBs using a number of MIB walking tools. This manual
describes how to set the MIBs using the SNMP Tools screen in EMME or
EMM-E6 Local Management. For additional information regarding the
SNMP Tools screen, refer to the EMME User’s Guide or the EMM-E6
Local Management Guide.

3.3.1 Assigning an Entire TPXMIM Board

The TPXMIM allows the options of assigning an entire board to an
individual MMA C Channel (i.e., Channel A, B, or C). Assigning an entire
board overrides any port local assignments that may have been set. To
assign an entire TPXMIM board, refer to the following instructions and
set the MIB using the desired variable.

To assign an entire board:

1. From the SNMP Tools screen, highlight SET, using the arrow keys.

Page 22 TPXMIM Installation Guide

CONFIGURING BOARDS AND PORTS

2. Press the Return key. SNMP Tools screen displays the following:

<SET> OID (=|F9):

3. Enter the following OID string:

4.1.52.1.6.1.2.2.1.1.2.MMAC Slot #.0

Note: Enter the number of the slot (i.e., slot 2-3 for an MMAC-3, 2-5
for an MMAC-5, or 2-8 for an MMAC-8) holding the TPXMIM in the
space indicated by bold text. When entering this OID string, remember
the following:

- MMAC slots increment from right to left

- the farthest right slot (#1) contains the multichannel
management module

- in this example, the SET command takes into account the

1.3.6.1 prepend.

4. Press the Return key. The SNMP Tools Screen displays:

{INteger String Null OId IP address Counter Guage Timeticks
OPaque} DATA TYPE (name):

5. Enter “IN” for an integer data type.

6. Press the Return key. The SNMP Tools screen displays:

SNMP OID DATA:

7. Enter the integer for the desired Channel assignment. The following
table provides a Channel to integer association.

MMAC Channel OID Integer (Instance)

A4

TPXMIM Installation Guide Page 23

B1
C2

CHAPTER 3: INSTALLATION/CONFIGURATION

8. Press the Return key. If the device accepts the entry, it displays:

<SET> OPERATION CODE: XXXX <OK>

If the module does not accept the entry, and an error message appears,
begin with step #1 again and re-enter the information. If the module
still refuses to accept the entry, contact Cabletron Technical Support.

3.3.2 Assigning Individual TPXMIM Ports

The TPXMIM allows the option of assigning indi vidual ports to a specific
MMAC Channel (i.e., Channel A, B, or C). To assign an individual
TPXMIM port, refer to the following instructions and set the MIB using
the desired variable.

To assign an individual port:

1. From the SNMP Tools screen, highlight SET, using the arrow keys.

2. Press the Return key. SNMP Tools screen displays the following:

<SET> OID (=|F9):

3. Enter the following OID string:

4.1.52.1.6.1.2.3.1.1.3.MMAC Slot #.TPXMIM Port #.0

Note: Enter the number of the slot (i.e., slot 2-3 for an MMAC-3, 2-5
for an MMAC-5, or 2-8 for an MMAC-8) holding the TPXMIM, and
the number of the port you want to assign, in the spaces indicated by
bold text. When entering this OID string, remember the following:

- MMAC slots increment from right to left

- the farthest right slot (#1) contains the multichannel

management module

- each TPXMIM displays port numbering on its faceplate

- in this example, the SET command takes into account the

1.3.6.1 prepend.

Page 24 TPXMIM Installation Guide

CONFIGURING BOARDS AND PORTS

4. Press the Return key. The SNMP Tools Screen displays:

{INteger String Null OId IP address Counter Guage Timeticks
OPaque} DATA TYPE (name):

5. Enter “IN” for an integer data type.

6. Press the Return key. The SNMP Tools screen displays:

SNMP OID DATA:

7. Enter the integer for the desired Channel assignment. The following
table provides a Channel to integer association.

MMAC

Channel

OID Integer

(Instance)

A1
B2
C3

8. Press the Return k ey . If the device accepts the integer entry , the SNMP
Tools screen displays:

<SET> OPERATION CODE: XXXX <OK>

If the module does not accept the entry, and an error message appears,
begin with step #1 again and re-enter the information. If the module
still refuses to accept the entry, contact Cabletron Technical Support.

TPXMIM Installation Guide Page 25

CHAPTER 3: INSTALLATION/CONFIGURATION

3.4 ADDING/REPLACING EPIMs

This section contains procedures on how to add/replace an Ethernet Port
Interface Module (EPIM) to upgrade or change the capabilities of your
hub. After installing your new EPIM, refer to appropriate EPIM sections
in this chapter to verify proper operation.

Caution: Observe all static precautions while handling EPIMs.

To add/replace an EPIM:

Note: When removing an EPIM, be sure to pull the module straight out so
as not to damage the connector.

1. Remove the coverplate or the EPIM (whichever applies).

2. Slide your new EPIM into place, making sure the connectors on the
rear of the module and inside the TPXMIM attach properly.

3. Install the mounting screw.

Mounting

Screw

EPIM

2
X

TPXMIM

Figure 3-3. Installing an EPIM

Page 26 TPXMIM Installation Guide

3
X

4
X

CONNECTING TO THE NETWORK

3.5 CONNECTING TO THE NETWORK

This section describes the various connection types for the TPXMIMs and
each optional EPIM. The procedure for connecting Ethernet segments to a
module or an EPIM varies depending on the media type. Refer to the list
below and follow the procedures in the appropriate subsection:

• TPXMIM 20/22 3.5.1

• TPXMIM 33/34 3.5.2

• EPIM-T 3.5.3

• EPIM-X 3.5.4

• EPIM-F1, F2, F3 3.5.5

• EPIM-C 3.5.6

• EPIM-A 3.5.7

3.5.1 Attaching a Twisted Pair Segment to

the TPXMIM-20/22

The TPXMIM-20 has nine RJ45 twisted pair ports and the TPXMIM-22
has twenty-one RJ45 twisted pair ports. The TPXMIM-20 and
TPXMIM-22 have a Polarity Correction and Detection feature which
allows packets to pass even if the polarity of the twisted pair is reversed.

To attach twisted pair segments to the network ports:

1. Insert the RJ45 connector from each twisted pair segment into the

desired network port on the TPXMIM as shown in Figure 3-4.

2

X
3

X
4

X

Figure 3-4. TPXMIM-20/22 Network Ports

TPXMIM Installation Guide Page 27

CHAPTER 3: INSTALLATION/CONFIGURATION

2. At the device end of a segment, attach the segment to a 10BASE-T
compliant Ethernet device.

3. Check that the LNK (link) LED on the 10B ASE-T Ethernet device and
the LNK LED on the TPXMIM are ON. If the LEDs are not ON,
perform each of the following steps until they are:

a. Check that the 10BASE-T device and the MMAC have power.

b. Verify the cabling between the TPXMIM and the device.

c. Check the cable for continuity.

If you cannot establish link, contact Cabletron Technical Support.

3.5.2 Attaching a Twisted Pair Segment to

the TPXMIM-33/34

The TPXMIM-33 has one 50-pin Champ connector and the TPXMIM-34
has two 50-pin Champ connectors. This configuration of the TPXMIM
allows you to run a 50-pin feeder cable from the TPXMIM to a punch
down block. Each Champ connector can accommodate twelve
10BASE-T, twisted pair segments.

The TPXMIM 34 provides the option of using all twenty-four 10Base-T
twisted pair segments or using twenty-three twisted pair segments and the
optional EPIM for a total of twenty-four active ports.

Note: Refer to Appendix A for information about wiring to a Punch Down
block.

The TPXMIM-33 and TPXMIM-34 have a Polarity Correction and
Detection feature which allows packets to pass under conditions of
reverse polarity.

Page 28 TPXMIM Installation Guide

12

1

CONNECTING TO THE NETWORK

Figure 3-5. 50-Pin Champ Connector

To connect the TPXMIM-33/34 into an existing twisted pair wiring
system:

1. Connect a 50-pin feeder cable to the Champ connector on the

TPXMIM. See Figure 3-5.

2. Attach the feeder cable to the punch down block, or patch panel. If

using a TPXMIM-34, you can connect a second 50-pin feeder cable to
the module.

In most cases, connect the feeder cable directly to a Champ connector
located on the punch down block. If not, wire the feeder cable to the
punch down block using the punch down information in Appendix A.

3. At the device end of a segment, attach the segment to a 10BASE-T

compliant Ethernet device.

TPXMIM Installation Guide Page 29

CHAPTER 3: INSTALLATION/CONFIGURATION

4. Check that the LNK (link) light on the 10B ASE-T Ethernet device and
the LNK LED on the TPXMIM are ON. If the LEDs are not ON,
perform each of the following steps until they are:

a. Check that the 10BASE-T device and the MMAC have power.

b. Verify the cabling between the module and the 10BASE-T device.

c. Check the cable for continuity.

If you cannot establish link, contact Cabletron Technical Support.

3.5.3 Connecting a Twisted Pair Segment to an EPIM-T

Before connecting a segment to the EPIM-T, check each end of the
segment to determine wire cross-over. If the wires do not cross over, use
the switch on the EPIM-T to internally cross over the RJ45 port. Refer to
Figure 3-6 to properly set the EPIM-T cross-over switch.

Note: To establish link, you must have an odd number of cross-overs
(preferably one) between 10BASE-T devices of the same type (i.e., from
repeater to repeater or transceiver to transceiver).

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

Figure 3-6. EPIM-T Cross-over Switch

Page 30 TPXMIM Installation Guide

CONNECTING TO THE NETWORK

To connect an EPIM-T to a Twisted Pair Segment:

1. Connect the twisted pair segment to the module by inserting the RJ45
connector on the twisted pair segment into the RJ45 port on the
module. (See Figure 3-7.)

2. Check that the LNK LED for the port is ON. If the LED is not ON,
perform each of the following steps until it is:

a. Check that the 10BASE-T device at the other end of the twisted

pair segment is powered.

b. Verify that the RJ45 connectors on the twisted pair segment have

the proper pinouts. (See Figure 3-7.)

c. Check the cable for continuity.

d. Check that the twisted pair connection meets dB loss and cable

specifications outlined in 10BASE-T Twisted Pair Network
Requirements (Chapter 2).

10BASE-T Device

Port

TX+

1

TX–

2

3

RX+

6

RX–

NOTE:
RX+/RX– and TX+/TX–
must share a common
color pair.

EPIM-T

Port

RX+

RX– 2

TX+
TX–

1

RJ45 to RJ45

3
6

Figure 3-7. Cable Pinouts - EPIM-T RJ45 Port

If you still cannot establish link, contact Cabletron Technical Support.

TPXMIM Installation Guide Page 31

CHAPTER 3: INSTALLATION/CONFIGURATION

3.5.4 Connecting an AUI Cable to an EPIM-X

Caution: The Signal Quality Error (SQE) switch remains in the OFF
position for most network connections. However, some Data Terminal
Equipment (DTE) requires SQE. Refer to your DTE manual for SQE
requirement information.

To connect an EPIM-X to a device not requiring SQE:

1. Check that the SQE LED on the EPIM-X is OFF. If the SQE LED is
ON, check the position of the SQE switch.

Note: If the SQE light remains ON, even though the SQE switch is in
the OFF position, contact Cabletron Technical Support.

2. Attach one end of an AUI cable, no longer than 50 meters in length, to
the port located on the EPIM-X (Figure 3-8) and the other end to the
intended node.

ON Position
(Toward Back
of EPIM)

ON

OFF

OFF Position
(Toward Front
of EPIM)

Figure 3-8. EPIM-X

Page 32 TPXMIM Installation Guide

CONNECTING TO THE NETWORK

3.5.5 Connecting a Fiber Optic Cable to an EPIM-F1/F2,

or EPIM-F3

When connecting a fiber optic link segment to an EPIM-F1/F2, or
EPIM-F3 keep the following in mind:

• When connecting a fiber optic link segment with SMA 906
connectors to an EPIM-F1 with SMA ports, make sure each
connector uses half alignment, NOT full alignment, sleeves.

Warning: A full alignment sleeve damages the receive port. SMA

905 connectors do not need alignment sleeves.

• When connecting a fiber optic link segment with ST connectors to
an EPIM-F2 with ST ports, keep in mind that ST connectors attach
to ST ports much like BNC connectors attach to BNC ports. Insert
the connector into the port with the alignment key on the connector
inserted into the alignment slot on the port. Turn the connector to
lock it down.

• The physical communication link consists of two strands of fiber
optic cabling: the Transmit (TX) and the Receive (RX). The
Transmit strand from a module port connects to the Receive port of
a fiber optic Ethernet device at the other end of the segment (i.e., TX
of the applicable port on the module goes to RX of the other fiber
optic device). The Receive strand of the applicable port on the
module connects to the Transmit port of the fiber optic Ethernet
device (i.e., RX of the applicable port on the module goes to TX of
the other fiber optic device).

We recommend labeling fiber optic cables to indicate Receive and
Transmit ends. Cabletron Systems prelabels its cable. At one end of
the cable, one fiber is labeled 1, and the other fiber is labeled 2. This
pattern repeats at the other end of the cable. When not purchasing
cable from Cabletron Systems, label your cable in this manner.

TPXMIM Installation Guide Page 33

CHAPTER 3: INSTALLATION/CONFIGURATION

Caution: Do not touch the ends of the fiber optic strands, and do not
let the ends come in contact with dust, dirt, or other contaminants.
Contamination of cable ends causes problems in data transmissions.
If necessary, clean contaminated cable ends using alcohol and a
soft, clean, lint-free cloth.

To connect a fiber optic link segment to an EPIM-F1/F2 or an EPIM-F3:

1. Remove the protective plastic covers from the fiber optic ports on the
applicable port on the module, and from the ends of the connectors on
each fiber strand.

2. Attach the fiber labeled 1 to the applicable receive port (RX) on the
module. (See Figure 3-9.)

F1/F2

SMA 905 Connectors

F3

ST Connectors

F1/F2

SMA 906 Connectors w/

Half Alignment Sleeves

Figure 3-9. EPIM-F1/F2 and EPIM-F3

Page 34 TPXMIM Installation Guide

ST Connectors

CONNECTING TO THE NETWORK

3. Attach the fiber labeled 2 to the applicable transmit port (TX) on the

module.

4. At the other end of the fiber optic cable, attach the fiber labeled 1 to the

transmit port of the device.

5. Attach the fiber labeled 2 to the receive port.

6. Check that the LNK LED on the applicable module port is ON. If the

LED is not ON, perform each of the following steps until it is:

a. Check that the device at the other end of the link is powered.

b. Verify proper “cross-over” of fiber strands between the applicable

port on the module and the fiber optic device at the other end of
the fiber optic link segment.

c. Verify that the fiber connection meets the dB loss specifications

outlined in Fiber Optic Network Requirements (Chapter 2).

If you still cannot establish link, contact Cabletron Technical Support.

3.5.6 Connecting a Thin-Net Segment to an EPIM-C

To connect a thin-net segment to an EPIM-C:

1. Set the Internal Termination Switch (Figure 3-10), located to the left

of the port and labeled TERM to:

• the ON position (●) to internally terminate the thin-net segment at

the port.

• the OFF position (❍) if you do not want the thin-net segment to

internally terminate at the port.

2. If the Internal Termination Switch is in the ON position, connect the

thin-net segment directly to the BNC port.

TPXMIM Installation Guide Page 35

CHAPTER 3: INSTALLATION/CONFIGURATION

3. If the Internal Termination switch is in the OFF position:

a. Attach a BNC tee-connector to the BNC port on the module.

b. Attach the thin-net segment to one (1) of the female connectors on

the tee-connector.

Caution: Failure to terminate each tee-connector segment may result
in improper segment operation. Place a terminator on any open
female connection on the tee-connector.

c. Attach another thin-coax segment or a terminator to the other

female connector on the tee-connector.

When internal termination switch
is set to off ( ):

Connect BNC tee-connector to port.
Attach a terminator or terminated

thin-net segment to one female
connector of tee-connector.

Connect a terminated thin-net
segment to other female connector
of tee-connector.

Attach thin-net segment directly to BNC
connector when internal termination
switch is set to on ( ).

Page 36 TPXMIM Installation Guide

Figure 3-10. EPIM-C

CONNECTING TO THE NETWORK

3.5.7 Connecting an AUI Cable to an EPIM-A

Caution: Ensure that the external transceiver to which the EPIM-A
connects does not have the Signal Quality Error (SQE or “heartbeat”) test
function enabled. The EPIM does not operate if the transceiver has the
SQE test function enabled. Refer to the applicable transceiver manual for
additional information.

To connect an EPIM-A to an external network segment:

1. Check that the PWR LED on the EPIM-A is ON. If the PWR LED is

OFF, contact Cabletron Systems Technical Support.

2. Attach an external transceiver to the network segment intended for

AUI port connection. For additional information, refer to the
applicable transceiver manual.

3. Attach an A UI cable, no longer than 50 meters in length, to the external

transceiver .

4. Connect the AUI cable to the AUI port located on the EPIM-A. (See

Figure 3-11.)

TPXMIM Installation Guide Page 37

Figure 3-11. EPIM-A

CHAPTER 3: INSTALLATION/CONFIGURATION

5. Lock the AUI connector into place using the connector slide latch.

6. If the transceiver PWR LED is OFF with the AUI cable connected:

a. Check the AUI connections for proper pinouts. Appendix B lists

the pinouts for the transceiver connection.

b. Check the cable for continuity.

c. Reconnect the AUI cable to the TPXMIM and the device.

If the transceiver PWR LED remains OFF, contact Cabletron Systems
Technical Support.

Page 38 TPXMIM Installation Guide

CHAPTER 4

TESTING/TROUBLESHOOTING

This chapter includes information for testing your TPXMIM before and
after connecting it to your network, and troubleshooting network and
TPXMIM operational problems.

4.1 PRE-INSTALLATION TEST

Before installing the TPXMIM in a live network, test the module in a
controlled situation to ensure that it is repeating packets. This test requires
an MMAC containing an EMME (or equivalent multichannel
management module) and the TPXMIM. You perform the test with two
workstations (Figure 4-1).

1. Install the EMME and the TPXMIM into a stand-alone MMAC.

2. Connect the first workstation to either the TPXMIM, using the

appropriate cable and transceiver, or to the EMME through the active
AUI port (normally AUI 1).

Note: The EMME uses the AUI 1 port as the default active bridge port.
If you want to test modules using the AUI 2 port, you must select that
port using EMME Local Management.

3. Connect the second workstation to the TPXMIM, using the

appropriate transceivers and cable.

4. Set the first workstation as the file server and the second as the client

(refer to specific workstation documentation for setting file server and
client). After setting up the workstations, send packets between the
workstations and verify that the module operates properly.

If failures occur, contact Cabletron Technical Support.

Note: A “ping” test verifies that the TPXMIM is operating properly.

TPXMIM Installation Guide Page 39

CHAPTER 4: TESTING/TROUBLESHOOTING

TPXMIM-33

EMME

TPT

MMAC-3FNB

Figure 4-1. Pre-installation Test

4.2 INSTALLATION CHECK-OUT

After connecting the EMME to the network, verify that the two Ethernet
network segments can pass packets using the EMME. Again you can use
two workstations set up as file server and client. Keep the server
workstation stationary in the wiring closet with the EMME, and move the
client workstation to each TPXMIM node (Figure 4-2).

1. Connect the server workstation to either the TPXMIM, using the
appropriate cable and transceiver, or to an EMME AUI port, using a
transceiver and an AUI cable.

2. Connect the client workstation to each node and test the segment.

If failures occur, contact Cabletron Systems Technical Support.

Page 40 TPXMIM Installation Guide

Office Locations

INSTALLATION CHECK-OUT

MMAC3/FNB with EMME and TPXMIM

TPXMIM-33

MMAC-3FNB

EMME

TPT

Client Workstation

Figure 4-2. Installation Check-Out

File Server Workstation

TPXMIM Installation Guide Page 41

CHAPTER 4: TESTING/TROUBLESHOOTING

TPXMIM-22

E
P

I

M

11
12
13
14
15
16
17
18
19
20
21
22

ETHERNET

A B C

11

X

12

X

13

X

RCV LNK

RCV LNK RCV LNK

1
2
3
4
5

6
7
8
9

10

CLN

4.3 USING LANVIEW

The TPXMIM uses the Cabletron Systems built-in visual diagnostic and
status monitoring system called LANVIEW. With LANVIEW, you can
quickly scan the TPXMIM LEDs to observe network status or diagnose
network problems.

Channel

LEDs

TPXMIM-34

SN

CLN

A B C

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

EPIM

RCV LNK
13
14
15
16
17
18
19
20
21
22
23
24

RCV LNK

ETHERNET

Port

LEDs

EPIM SEL

Figure 4-3. LANVIEW LEDs

E
P

I

M

Page 42 TPXMIM Installation Guide

USING LANVIEW

Table 4-1. TPXMIM LANVIEW LEDs

LED Color Description

Ethernet
Channels
(A, B, C)

CLN
(Collision)

Green When ON, these

LEDs indicate that
at least one
TPXMIM port
accesses that
Channel.

The TPXMIM can
have all LEDs ON
at the same time.

Red LED flashes to

indicate the
occurence of
collisions on the
port. Collisions
normally occur on
an Ethernet
Network.

Error Condition/

Recommended Action

The TPXMIM defaults to
Channel B on power-up. If the
Channel B LED remains off
after powering the TPXMIM,
contact Cabletron Technical
Support.

If you assign a board or
individual port to another
Channel, and the Ethernet LED
remains OFF, contact
Cabletron Technical Support.

Flash frequency may increase
with increased network
activity. Excessive collisions
indicate too much traffic on a
segment.

Reduce traffic on that segment.

RCV
(Receive)

EPIM RCV

(Receive)

TPXMIM­33/34

Yellow Light flashes to

indicate that a
segment is
receiving a frame.

If none of the receive LEDs are
flashing, the TPXMIM is not
receiving frames on any of the
segments.

Check that each module is
firmly installed in the MMAC.

Ensure that all connected ports
are enabled.

TPXMIM Installation Guide Page 43

CHAPTER 4: TESTING/TROUBLESHOOTING

Table 4-1. TPXMIM LANVIEW LEDs (Continued)

LED Color Description

EPIM SEL
(Select)

TPXMIM­33

EPIM SEL
(Select)

TPXMIM­34

Green This LED is ON as

long as power is
applied. The EPIM
on the TPXMIM-33
is always selected
(all ports are
active).

Green This LED indicates

port association se­lection of the EPIM
port instead of
10BASE-T port 13.

Error Condition/

Recommended Action

If the LED remains OFF after
powering the TPXMIM, contact
Cabletron Technical Support.

This LED is ON only if the
EPIM is selected by assigning
it to a specific Ethernet
Channel. Select the EPIM
through the use of a MIB
walking tool and an MMAC
(see Chapter 3).

If you cannot select the EPIM,
contact Cabletron Technical
Support.

LNK
(Link)

Green When ON, this LED

indicates a port has
obtained a link
with the device at
the other end of the
attached segment.
This LED remains
ON as long as the
link is maintained.

If the LED remains OFF, check
the cable integrity, and that the
device on the other end of the
cable is ON.

If you cannot obtain link,
contact Cabletron Technical
Support.

Page 44 TPXMIM Installation Guide

TROUBLESHOOTING CHECKLIST

4.4 TROUBLESHOOTING CHECKLIST

If your TPXMIM is not operating properly, the following checklist
describes some of the problems that may occur with the module, possible
causes for the problem, and suggestions for resolving the problem.

Table 4-2. Troubleshooting Checklist

Problem Possible Causes

All LEDs are OFF. Loss of Power to the

MMAC.
TPXMIM not properly

installed.

Recommended

Action

Check the proper
installation of the
MMAC power supply
module and its access
to a live outlet.

Check that the MMAC
has adequate power.
Some configurations,
especially those
including FDDI
modules, require that
the MMAC contain
more than one power
supply.

Check to see that the
power supply LEDs are
green.

Cannot assign the
TPXMIM board or
individual ports from
in-band management.

No power to an external
transceiver connected
to the EPIM port.

High number of
collisions on EPIM port.

TPXMIM Installation Guide Page 45

No link to device. Refer to the Local

Management Guide for
the multichannel
management module
controlling the MMAC,
and ensure you are
using the MIB walking
tool properly.

Check link to device.

EPIM is defective.
EPIM cable is defective.

External transceiver
has SQE enabled.

Replace EPIM.
Replace EPIM cable.

Disable SQE.

APPENDIX A

TWISTED PAIR WIRING TABLES

This appendix contains twisted pair wiring tables to assist you when using
a punch down block (see Figure A-1) to wire your twisted pair segments.
This appendix includes the following tables:

• Table A-1 Twisted Pair Wiring from a Punch
Down Block to a 10BASE-T Device

• Table A-2 Twisted Pair Wiring Summary

Table A-1. Twisted Pair Wiring

From a Punch Down Block to a 10Base-T Device

From Punch Down Block To RJ45

Wallplate

Port 12/24 Pin Pin Pin
B45 Violet/Green RX+ 1 TX+ 1 TX+ 1 TX+
B46 Green/Violet RX- 2 TX- 2 TX- 2 TX­B47 Violet/Brown TX+ 3 RX+ 3 RX+ 3 RX+
B48 Brown/Violet TX- 6 RX- 6 RX- 6 RX­Port 11/23 Pin Pin Pin
B41 Violet/Blue RX+ 1 TX+ 1 TX+ 1 TX+
B42 Blue/Violet RX- 2 TX- 2 TX- 2 TX­B43 Violet/Orange TX+ 3 RX+ 3 RX+ 3 RX+
B44 Orange/Violet TX- 6 RX- 6 RX- 6 RX-

Into
Office
Drop

Into
10BASE-T
Device

Port 10/22 Pin Pin Pin
B37 Yellow/Brown RX+ 1 TX+ 1 TX+ 1 TX+
B38 Brown/Yellow RX- 2 TX- 2 TX- 2 TX­B39 Yellow/Gray TX+ 3 RX+ 3 RX+ 3 RX+

TPXMIM Installation Guide Page 47

APPENDIX A: TWISTED PAIR WIRING TABLES

Table A-1. Twisted Pair Wiring

From a Punch Down Block to a 10Base-T Device (Continued)

From Punch Down Block To RJ45

Wallplate

B40 Gray/Yellow TX- 6 RX- 6 RX- 6 RX­Port 9/21 Pin Pin Pin
B33 Yellow/Orange RX+ 1 TX+ 1 TX+ 1 TX+
B34 Orange/Yellow RX- 2 TX- 2 TX- 2 TX­B35 Yellow/Green TX+ 3 RX+ 3 RX+ 3 RX+
B36 Green/Yellow TX- 6 RX- 6 RX- 6 RX­Port 8/20 Pin Pin Pin
B29 Black/Gray RX+ 1 TX+ 1 TX+ 1 TX+
B30 Gray/Black RX- 2 TX- 2 TX- 2 TX­B31 Yellow/Blue TX+ 3 RX+ 3 RX+ 3 RX+

Into
Office
Drop

Into
10BASE-T
Device

B32 Blue/Yellow TX- 6 RX- 6 RX- 6 RX­Port 7/19 Pin Pin Pin
B25 Black/Green RX+ 1 TX+ 1 TX+ 1 TX+
B26 Green/Black RX- 2 TX- 2 TX- 2 TX­B27 Black/Brown TX+ 3 RX+ 3 RX+ 3 RX+
B28 Brown/Black TX- 6 RX- 6 RX- 6 RX­Port 6/18 Pin Pin Pin
B21 Black/Blue RX+ 1 TX+ 1 TX+ 1 TX+
B22 Blue/Black RX- 2 TX- 2 TX- 2 TX­B23 Black/Orange TX+ 3 RX+ 3 RX+ 3 RX+
B24 Orange/Black TX- 6 RX- 6 RX- 6 RX­Port 5/17 Pin Pin Pin
B17 Red/Brown RX+ 1 TX+ 1 TX+ 1 TX+

Page 48 TPXMIM Installation Guide

TWISTED PAIR WIRING TABLES

Table A-1. Twisted Pair Wiring

From a Punch Down Block to a 10Base-T Device (Continued)

From Punch Down Block To RJ45

Wallplate

B18 Brown/Red RX- 2 TX- 2 TX- 2 TX­B19 Red/Gray TX+ 3 RX+ 3 RX+ 3 RX+
B20 Gray/Red TX- 6 RX- 6 RX- 6 RX­Port 4/16 Pin Pin Pin
B13 Red/Orange RX+ 1 TX+ 1 TX+ 1 TX+
B14 Orange/Red RX- 2 TX- 2 TX- 2 TX­B15 Red/Green TX+ 3 RX+ 3 RX+ 2 TX­B16 Green/Red TX- 6 RX- 6 RX- 6 RX­Port 3/15 Pin Pin Pin
B9 White/Gray RX+ 1 TX+ 1 TX+ 1 TX+

Into
Office
Drop

Into
10BASE-T
Device

B10 Gray/White RX- 2 TX- 2 TX- 2 TX­B11 Red/Blue TX+ 3 RX+ 3 RX+ 3 RX+
B12 Blue/Red TX- 6 RX- 6 RX- 6 RX­Port 2/14 Pin Pin Pin
B5 White/Green RX+ 1 TX+ 1 TX+ 1 TX+
B6 Green/White RX- 2 TX- 2 TX- 2 TX­B7 White/Brown TX+ 3 RX+ 3 RX+ 3 RX+
B8 Brown/White TX- 6 RX- 6 RX- 6 RX­Port 1/13 Pin Pin Pin
B1 White/Blue RX+ 1 TX+ 1 TX+ 1 TX+
B2 Blue/White RX- 2 TX- 2 TX- 2 TX­B3 White/Orange TX+ 3 RX+ 3 RX+ 3 RX+
B4 Orange/White TX- 6 RX- 6 RX- 6 RX-

TPXMIM Installation Guide Page 49

APPENDIX A: TWISTED PAIR WIRING TABLES

Port 12
4

2
4

2

P
4

2
4

2
:

:
:
:

:
:
:
:
:
:

:
P
2

1
2

2

A45 RX+
A

-

A

+

A

-

A

+

A

-

A

+

A

-

:
:
:
:

:
:
:
:
:
:

:

A
A

A
A

PIN 1 TX+
P

X-

P

X+

P

X+

P

X+

P

X-

P

X+

P

X-

:
:
:
:

:
:
:
:
:
:

:

P

X+

P

X-

P

X+

P

X-

PIN 1 TX+
P

X-

P

X+

P

X+

P

X+

P

X-

P

X+

P

X-

:
:
:
:

:
:
:
:
:
:

:

P

X+

P

X-

P

X+

P

X-

{

25 Pin

der

ble

{

25 Pin

der

ble

{

25 Pin

der

ble

{

4 Pair

d
ion

{

4 Pair

d
ion

{

4 Pair

d
ion

{

Office

op

{

Office

op

{

Office

op

Table A-2. Twisted Pair Wiring Summary

TPXMIM 33/34
Champ

8 RX+
3 RX-

Fee

9 TX+
4 TX-

ort 11

6 RX+
1 RX-

7 TX+
2 TX-

Ca

Fee

Ca

Punch Down
Block

{

46 RX
47 TX

48 TX

41 RX

{

42 RX
43 TX

44 TX

Twiste

Distribut

Cable

Twiste

Distribut

Cable

Wall Plate
(If Required)

{

IN 2 T
IN 3 R

IN 6 R

IN 1 T

{

IN 2 T
IN 3 R

IN 6 R

10BASE-T
Ethernet
Device

{

IN 2 T

Dr

IN 3 R
IN 6 R

IN 1 T

{

IN 2 T

Dr

IN 3 R
IN 6 R

ort 1

6 RX+
RX-

Fee

7 TX+
TX-

Page 50 TPXMIM Installation Guide

Ca

{

1 RX+
2 RX-

3 TX+
4 TX-

Twiste

Distribut

Cable

{

IN 1 T
IN 2 T

IN 3 R
IN 6 R

Dr

{

IN 1 T
IN 2 T

IN 3 R
IN 6 R

1
2
3

4
5

6
7
8

9
10

11
12
13

14
15

16
17
18

19
20

21
22
23

24
25
26

27
28

29
30
31

32
33

34
35
36

37
38

39
40
41

42
43

44
45
46

47
48

49
50

TWISTED PAIR WIRING TABLES

A B C D

TPXMIM Installation Guide Page 51

Figure A-1. Punch Down Block

APPENDIX B

EPIM SPECIFICATIONS

Network (Twisted Pair) Interface

Internal Transceiver: Cabletron Systems TPT

Transceiver. Refer to the TPT

Twisted Pair Transceiver

User’s Manual.

EPIM-T (10BASE-T Twisted Pair Port)

Internal Transceiver: Cabletron Systems TPT

10BASE-T
Twisted Pair Transceiver

Type: 8 Pin RJ45 Jack (Fig. B-1).

Figure B-1. EPIM-T (with RJ45 Port)

A slide switch on the EPIM-T determines the cross-over status of the
cable pairs. The switch residing on the X side indicates the pairs
internally cross over. If the switch resides on the = side, the pairs do
not internally cross over. (See Fig. B-2.)

TPXMIM Installation Guide Page 53

APPENDIX B: EPIM SPECIFICATIONS

Position X
(crossed over)

1. RX+

2. RX-

3. TX+

4. NC

Position =
(not crossed over)

1. TX+

2. TX-

3. RX+

4. NC

5. NC

6. TX-

7. NC

8. NC

5. NC

6. RX-

7. NC

8. NC

Figure B-2. Cross-over Switch on the EPIM-T

EPIM-F1/F2 (Multimode Fiber Optic Port)

Internal Transceiver: Cabletron Systems FOT-F™

Fiber Optic Transceiver

Type:

EPIM-F1: SMA fiber optic ports (Fig. B-3)
EPIM-F2: ST fiber optic ports (Fig. B-3)

Figure B-3. EPIM-F1 and EPIM-F2

Page 54 TPXMIM Installation Guide

EPIM-F3 (SINGLE MODE FIBER OPTIC PORT)

Receive Sensitivity: -29.5 dBm
Max Receive Power: -8.2 dBm
Transmitter Power Into:

50/125 µm fiber: -13.0 dBm

62.5/125 µm fiber: -10.0 dBm
100/140 µm fiber: -7.0 dBm

Bit Error Rate: Better than 10

-10

Note: The above transmitter power and receive sensitivity levels represent
Peak Power Levels after optical overshoot. You must use a Peak Power
Meter to correctly compare the above values to those you measure on any
particular port. If you measure Power Levels with an Average Power
Meter, you must subtract 3 dBm from the measurement to correctly
compare measured values to the above values (e.g., -29.5 dBm peak =

-32.5 dBm average).

EPIM-F3 (SINGLE MODE FIBER OPTIC PORT)

Internal Transceiver: Cabletron Systems FOT-F3™

Fiber Optic Transceiver

Type: ST fiber optic ports (Fig. B-4)

TPXMIM Installation Guide Page 55

Figure B-4. EPIM-F3

APPENDIX B: EPIM SPECIFICATIONS

Note: Transmitter power is inversely proportional to temperature rise.
Use the Output Power Coefficient to calculate increased or decreased
power output for your operating environment. For example, typical power
output at 25ºC equals -16.4 dBm. For a 4ºC temperature increase, multiply
the typical coefficient (-0.15 dBm) by four, and add the result to typical
output power (4 x -0.15 dBm + -16.4 dBm = -17.0 dBm).

Parameter Typical Minimum Maximum

Transmitter Peak
Wave Length: 1300 nm 1270 nm 1330 nm

Spectral Width: 60 nm — 100 nm

Rise Time: 3.0 ns 2.7 ns 5.0 ns
Fall Time: 2.5 ns 2.2 ns 5.0 ns
Duty Cycle: 50.1% 49.6% 50.7%

TX Power: -15.1 dBm
TX Budget: 14.4 dBm

RX Sensitivity: -29.5 dBm

MAX Receive
Power: -6.99 dBm

Bit Error Rate: Better than

Page 56 TPXMIM Installation Guide

10

-10

EPIM-C (BNC PORT)

Note: The above transmitter power levels and receive sensitivity
levels represent Peak Power Levels after optical overshoot. You
must use a Peak Power Meter to correctly compare the above values
to those you measure on any particular port. If you measure Power
Levels with an Average Power Meter, you must subtract 3 dBm from
the measurement to correctly compare those measured values to the
values listed above (e.g., -29.5 dBm peak = -32.5 dBm average).

EPIM-C (BNC PORT)

Internal Transceiver: Cabletron Systems TMS-3™

Transceiver

Type: BNC receptacle, with gold

center contact, for use with BNC
type tee-connectors and RG-58
thin-net cable (Fig. B-5).

Termination: Using the switch to the side of

TPXMIM Installation Guide Page 57

Internal Termination Switch
= On (internally terminated)
= Off (need external termination)

Figure B-5. EPIM-C (with BNC Port)

the port, you can internally
terminate the port on the module
via a built-in 50 ohm terminator.
This eliminates the need to
connect the port to a tee­connector and terminator.

APPENDIX B: EPIM SPECIFICATIONS

Grounding: For safety, connect only one end

of a thin-net segment to earth
ground. Do not connect the BNC
port of an EPIM-C to earth
ground.

Warning: Connecting a thin-net segment to earth ground at more
than one point could produce dangerous ground currents.

EPIM-A AND EPIM-X (AUI PORT)

Interface Connector: DB-15 Port (female connector

for EPIM-A, male connector for
EPIM-X) (Fig. B-6).

Type: 15 position D type receptacle

Figure B-6. EPIM-A and EPIM-X (AUI Port)

Pin 1 Logic Ref. Pin 9 Collision -

2 Collision + 10 Transmit ­3 Transmit + 11 Logic Ref.
4 Logic Ref. 12 Receive ­5 Receive + 13 Power (+12 Vdc)
6 Power Return 14 Logic Ref.
7 No Connection 15 No Connection
8 Logic Ref.

Connector Shell: Protective Ground

Page 58 TPXMIM Installation Guide