Cabletron Systems TPXMIM-20 User manual

TPXMIM
INSTALLATION
GUIDE
CABLETRON SYSTEMS, P.O. Box 5005, Rochester, NH 03867-0505
TPXMIM-22
10BASE-T
ETHERNET
E
P
I
M
SN
2
X
3
X
4
X
11
12
13
14
15
16
17
18
19
20
21
22
ETHERNET A B C
17
X
18
X
19
X
20
X
21
X
22
X
11
X
12
X
13
X
14
X
15
X
16
X
5
X
6
X
7
X
8
X
9
X
10
X
RCV LNK
RCV LNK RCV LNK1
2
3
4
5
6
7
8
9
10
CLN
TPXMIM-20
10BASE-T
ETHERNET
E
P
I
M
SN
2
X
3
X
4
X
ETHERNET A B C
5
X
6
X
7
X
8
X
9
X
10
X
RCV LNK RCV LNK1
2
3
4
5
6
7
8
9
10
CLN
SN
TPXMIM-34
10BASE-T
ETHERNET
E
P
I
M
12
1
24
13
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
SN
TPXMIM-33
10BASE-T
ETHERNET
12
1
ETHERNET A B C
CLN
1
2
3
4
5
6
7
8
9
10
11
12
RCV LNK
EPIM SEL
EPIM SEL
EPIM
EPIM
E
P
I
M

TPXMIM Installation Guide i
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 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 BEENADVISED 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 and LANVIEW are registered trademarks and TPXMIM , EMME ,
EMM-E6 , MMAC-8FNB , MMAC-5FNB , MMAC-3FNB , and EPIM are trademarks of
Cabletron Systems, Inc.
Ethernet is a registered trademark of Xerox Corp.
VT-220 and VT-320 are trademarks of Digital Equipment Corp.
CompuServe is a registered trademark of CompuServe, Inc.
Printed on
recycled paper.

NOTICE
ii TPXMIM Installation Guide
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: This equipment has been tested and found to comply with the limits for a ClassA
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: Changes or modifications made to this device which are not expressly
approved by the party responsible for compliance could void the user’s authority to
operate the equipment.
DOC NOTICE
This digital apparatus does not exceed the ClassA 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.

TPXMIM Installation Guide iii
CABLETRON SYSTEMS, INC.
PROGRAM LICENSE AGREEMENT
IMPORTANT: Before utilizing this product, carefully read this License Agreement.
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. IFYOU DO NOT AGREE TO THE
TERMS OF THISAGREEMENT, PROMPTLY RETURN THE UNUSED PRODUCT
TO THE PLACE OF PURCHASE FOR A FULL REFUND.
CABLETRON SOFTWARE PROGRAM LICENSE
1. LICENSE. You have the right to use only the one (1) copy of the Program provided
in this 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.

iv TPXMIM Installation Guide
EXCLUSION OF WARRANTY
AND DISCLAIMER OF LIABILITY
1. EXCLUSION OF WARRANTY. Except as may be specifically provided by
Cabletron in writing, Cabletron makes no warranty, expressed or implied, concerning
the Program (including Its documentation and media).
CABLETRON DISCLAIMSALL WARRANTIES, OTHER THAN THOSE
SUPPLIED TOYOU 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, THEACCOMPANYING WRITTEN
MATERIALS, AND ANY ACCOMPANYING HARDWARE.
2. NO LIABILITY FOR CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL
CABLETRON OR ITS SUPPLIERS BE LIABLE FORANY 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 BEENADVISED 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 THEABOVE LIMITATIONS AND EXCLUSIONS MAY NOT
APPLY TOYOU.
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 52.227-
7013 (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.

CONTENTS
TPXMIM Installation Guide v
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

CONTENTS
vi TPXMIM Installation Guide
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

TPXMIM Installation Guide Page 1
CHAPTER 1
INTRODUCTION
The Twisted Pair Switching Media Interface Module (TPXMIM) is a
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.
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 , discusses TPXMIM features, and provides an
overview of the device’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 , provides specifications and
network requirements to consider before installing the TPXMIM.

CHAPTER 1: INTRODUCTION
Page 2 TPXMIM Installation Guide
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,
Testing/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,
Twisted 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

OVERVIEW
TPXMIM Installation Guide Page 3
MIB Navigation
Assigning the TPXMIM board or individual ports to specific Ethernet
channels, or obtaining TPXMIM board or port statistics, requires a multi-
channel 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 walking 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 MMAC. 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
any segment, or if a collision detector remains on for more than 110
µ 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.

CHAPTER 1: INTRODUCTION
Page 4 TPXMIM Installation Guide
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 : 10Base-T Twisted Pair Segment Interface Module
•
EPIM-F1/EPIM-F2 : Multimode Fiber Optic Segment
Interface Modules using SMA/ST style connectors
•
EPIM-F3 : Single Mode Fiber Optic Segment Interface Module
•
EPIM-C : Thin-net Coaxial Segment Interface Module
•
EPIM-A/EPIM-X : 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 multi-
channel 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., ChannelA, 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.

THE TPXMIM AND MMAC BACKPLANE
TPXMIM Installation Guide Page 5
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).
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 anA Channel module
between them in the chassis. The following table gives the part numbers
of the MMAC chassis that have shunting capabilities.
Power & Management Bus
Flexible Network Bus
Ethernet A Bus
Ethernet B Bus
Ethernet C Bus

CHAPTER 1: INTRODUCTION
Page 6 TPXMIM Installation Guide
Table 1-1. MMACs with Shunting Capabilities
Note: If your MMAC does not have a shunting backplane, upgrade kits
are available. For additional information on shunting backplanes, or how
to upgrade your hub, contact Cabletron Systems Technical Support.
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
RCV (receive) LED to indicate network activity on the port
•a
LNK (link) LED to indicate the connection status of the port.
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:
•a
RCV (receive) LED to indicate network activity on the port
MMAC Chassis Part #
MMAC-3FNB FC
000000000 or above
MMAC-5FNB
CC 000000000 or above
MMAC-8FNB
CG 000000000 or above
MMAC-M8FNB
DK 000000000 or above
MMAC-M5FNB all
MMAC-M3FNB all

NETWORK MANAGEMENT CAPABILITIES
TPXMIM Installation Guide Page 7
•a SEL (select) LED to indicate port association selection of the
EPIMport.The
SEL LED on theTPXMIM-33is alwayslit sincethe
EPIM is always active.
However , the TPXMIM-34 provides the
software selectable option of using the EPIM instead of
10Base-T
Champ connector port 13. In other words, on the
TPXMIM-34 , you
can have
either the EPIM or Champ connector port 13 active at any
given time. This allows a total of 24 connections.
The TPXMIM includes the following LEDs to indicate Channel status:
•a
CLN (collision) LED for each channel (i.e., A, B, and C)
• an
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.

CHAPTER 1: INTRODUCTION
Page 8 TPXMIM Installation Guide
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 any 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: [email protected]
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., have you returned the device before, is this a
recurring problem, etc.)
• any previous Return Materials Authorization (RMA) numbers.

TPXMIM Installation Guide Page 9
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.

CHAPTER 2: SPECIFICATIONS/REQUIREMENTS
Page 10 TPXMIM Installation Guide
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 ClassA 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
(13.4 D x 11.5 H X 2.0 W inches)
Weight: ~ 2 lbs.

TPXMIM NETWORK REQUIREMENTS
TPXMIM Installation Guide Page 11
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 shows the pinouts
for the RJ45 connectors.
Figure 2-1. RJ45 Network Ports
2.2.2 TPXMIM-33/34 Champ Connector Specifications
The TPXMIM-33 and TPXMIM-34 provide 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.
Figure 2-2. 50-Pin Champ Connectors
8. Not Used
7. Not Used
6. Transmit -
5. Not Used
4. Not Used
3. Transmit +
2. Receive -
1. Receive +
1
2
3
4
5
6
7
8
12
1
24
13

CHAPTER 2: SPECIFICATIONS/REQUIREMENTS
Page 12 TPXMIM Installation Guide
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

NETWORK REQUIREMENTS
TPXMIM Installation Guide Page 13
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-TTwisted 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.