Transition Networks HB-E-TX-8 User manual

For assistance in installing, using, or
maintaining the TRANSITION Networks
LAN Master™ TX8 100BASE-TX 8-Port
Hub, contact TRANSITION Networks
Technical Support at:
[phone]
or contact your local distributor.
33013.C
LAN Master TX8
(HB-E-TX-8)
100BASE-TX 8-Port Hub
LAN Master™ TX8
17
™

LAN Master™ TX8 100BASE-TX 8-Port Hub 16
CAUTION: RJ connectors are NOT INTENDED FOR
CONNECTION TO THE PUBLIC TELEPHONE
NETWORK. Failure to observe this caution could result
in damage to the public telephone network.
Compliance Information
UL Listed
C-UL Listed (Canada)
CISPR/EN55022 Class A
FCC Regulations
This equipment has been tested and found to comply with the limits for a class
A 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
generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference, in which case the user
will be required to correct the interference at the user’s own expense.
Canadian Regulations
This digital apparatus does not exceed the Class A limits for radio noise for
digital apparatus set out on the radio interference regulations of the Canadian
Department of Communications.
European Regulations
Warning
This is a Class A product. In a domestic environment this product may cause
radio interference in which case the user may be required to take adequate
measures.
Copyright Restrictions
© 1996, 1997 TRANSITION Networks.
All rights reserved. No part of this work may be reproduced or used in any
form or by any means – graphic, electronic, or mechanical – without written
permission from TRANSITION Networks.
Trademark Notice
All registered trademarks and trademarks are the property of their respective
owners.
Der Anschluss dieses Gerätes an ein öffentlickes
Telekommunikationsnetz in den EG-Mitgliedstaaten verstösst gegen die
jeweligen einzelstaatlichen Gesetze zur Anwendung der Richtlinie
91/263/EWG zur Angleichung der Rechtsvorschriften der
Mitgliedstaaten über Telekommunikationsendeinrichtungen
einschliesslich der gegenseitigen Anerkennung ihrer Konformität.
LAN MASTER™ TX8 SPECIFICATIONS
Standards
IEEE 802.3u 100BASE-TX Class 2 (unstacked)
Physical
Dimensions
17’ x 10’ x .1.8’ (438 mm x 255 mm x 45 mm)
Shipping Weight
9 lbs (4.1 kg)
Input Power
Internal universal input; 100–240VAC, 50/60 Hz, 53W
AC Input Cord:
TN PN Requirement Location
3344 120 volts, 60 hertz USA/Canada/Mexico
3344 100 volts, 50-60 hertz Japan
3347 230 volts, 50 hertz Europe
3348 240 volts, 50 hertz Australia
3349 240 volts, 50 hertz United Kingdom
MTBF
50,000 hours
Environment
Temperature: 0-50°C (32° to 122° F )
Humidity 10-90%, non condensing
Altitude 0-10,000 feet
Warranty
lLifetime

Table of Contents
1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . 1
The LAN Master™ TX8 Hub . . . . . . . . . . . . . . . . . . . . . . . . .1
LAN Master™ TX8 Hub Features . . . . . . . . . . . . . . . . . . . . . . . .1
Networking the LAN Master™ TX8 Hub . . . . . . . . . . . . . . . . . .2
LAN Master™ TX8 Hub Connectors and Status LEDs . . . . . . .3
RJ-45 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Power Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2 SITE CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . 4
3 INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Unpacking the LAN Master™ TX8 . . . . . . . . . . . . . . . . . . . . .5
Installing LAN Master™ TX8 in 19-inch Rack . . . . . . . . . . . .6
Optionally Cascading Two LAN Master™ TX8 Hubs . . . . . . .7
Connecting 100BASE-TX Cable . . . . . . . . . . . . . . . . . . . . . . .8
Connecting Power to LAN Master™ TX8 . . . . . . . . . . . . . . . .9
4 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . 11
Fault Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Technical Support Contact . . . . . . . . . . . . . . . . . . . . . . . . .11
WARRANTY STATEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
CABLE SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
LAN MASTER™ TX8 HUB SPECIFICATIONS . . . . . . . . . . . 16
LAN Master™ TX8 i
15 100BASE-TX 8-Port Hub
100BASE-TX Cable and Connector Specifications
The physical characteristics of the 100BASE-TX cable must meet or
exceed IEEE 802.3u 100BASE-TX specifications.
100BASE-TX CABLE SPECIFICATIONS
Category 5 wire or better is required. Either shielded twisted pair
(STP) or unshielded twisted pair (UTP) can be used. DO NOT USE
FLAT OR SILVER SATIN WIRE.
Category 5: Gauge 24 to 22 AWG
Attenuation 20 dB/1000’ @ 10 MHz
Impedance 100 Ω±10% @ 10 MHz
Maximum Cable Distance: 100 meters (330 feet)
100BASE-TX CONNECTOR CHARACTERISTICS:
The 100BASE-TX connectors are standard RJ-45 connectors with
standard pinning.
The two active pairs in a 100BASE-TX network are pins 1 & 2 and
pins 3 & 6. Use only dedicated wire pairs (such as blue/white &
white/blue, orange/white & white/orange) for the active pins.
100BASE-TX cable for unlike devices (such as hub to terminal
device) must be configured as straight through; 100BASE-TX cable
for like devices (such as hub to hub or terminal device to terminal
device) must be configured as crossover.
NOTE: MDI/MDI-X connectors on hubs allow straight-through
cable to be used in a crossover configuration for hub to hub
connection.
Twisted
Pair #1
Twisted
Pair #2
Crossover Cable
Connectors for like devices
Twisted
Pair #1
Twisted
Pair #2
Straight Through Cable
Connectors for unlike devices

LAN Master™ TX8 14
1100BASE-TX 8-Port Hub
1. INTRODUCTION
This guide is intended for the system or network administrator
responsible for installing and monitoring a TRANSITION Networks
LAN Master™TX-8 100BASE-TX 8-Port Hub. A working knowledge
of local area network (LAN) operations, including familiarity with
communications protocols used on interconnected LANs, is
assumed.
The LAN Master™ TX8 Hub
The LAN Master™TX8 100BASE-TX 8-Port Hub (HB-E-TX-8) is a
Fast Ethernet repeater designed to meet IEEE 802.3u 100BASE-TX
standards.
LAN Master™ TX8 Hub Features
•Eight RJ-45 100BASE-TX ports for Fast Ethernet connectivity
•Port #8 provides LAN Master™TX8-to-LAN Master™TX8
MDI/MDI-X uplink option
•19-inch rack mountable
•Auto partitioning of ports with excessive collisions
•Fully automatic preamble regeneration
•Internal universal input power supply
FAST ETHERNET (IOOBASE-X)
CABLE SPECIFICATIONS
Due to the limited collision domain in 100BASE-X, use the shortest
cables possible to make a connection between any two devices.
Where collisions are not a consideration (full duplex), longer
cable may be possible.
Effective cable distances are determined by ambient RF noise and
by signal loss in the cable. Since fiber has low signal loss/meter
and invulnerability to RF noise, fiber is the preferred medium for
extending distances.
100BASE-FX Cable and Connector Specifications
The physical characteristics of the 100BASE-FX cable must meet or
exceed IEEE 802.3 100BASE-FX specifications.
100BASE-FX CABLE SPECIFICATIONS
Fiber Optic Cable Recommended: 62.5 / 125 µm multimode fiber
Optional: 100 / 140 µm multimode fiber
85 / 125 µm multimode fiber
50 / 125 µm multimode fiber
Fiber Optic Transmitter Power:
Average power: -19.0 dBm
Fiber Optic Receiver Sensitivity:
Average sensitivity: -33.5 dBm
Bit error rate: ≤10-10
Maximum Cable Distance: 2000 meters (6500 feet)
100BASE-FX CONNECTOR CHARACTERISTICS:
The 100BASE-FX connectors are standard ST connectors.
SC connectors are available.

LAN Master™ TX8 2
13 100BASE-TX 8-Port Hub
Networking the LAN Master™ TX8 Hub
Use the LAN Master™TX8 100BASE-TX 8 port hub alone to provide
eight RJ-45 Fast Ethernet port connections.
Cascade two LAN Master™TX8 hubs, using the uplink port at the
front of the hubs, to provide fourteen RJ-45 Fast Ethernet port
connections.
Up to 100 meters
Up to 100 meters
Up to 100 meters
Up to 5 meters
The sole purpose of this remedy shall be provided the customer with the replacement or
repair of non-conforming goods in the manner described in this Warranty statement. This
exclusive remedy shall not be deemed to have failed of its essential purpose so long as TN is
willing and able to repair or replace the defective item(s) or refund the purchase price.
TN reserves the right to inspect products claimed to be defective under warranty either at the
customer’s location or at TN’s plant. TN assumes no liability for liability charges incidental
to the adjustment, service, repairing, removal or replacement of the product, or other costs,
or the expense of repairs made outside of its factory, except when made with TN’s prior
written consent. Additionally, Transition Networks reserves the right to charge for all testing
and shipping incurred, if after testing, a return is classified as “No Problem Found”.
TN’s total liability in connection with the products and their installation to all persons and
from all causes in the aggregate, whether in contract, tort, or strict liability, shall not exceed
the amount paid to TN for the product directly related to the alleged damage. However, in
no event shall TN have any liability to a customer or any third party for products
manufactures according to the customer’s specifications.
C. Return Procedure
The customer must follow this procedure for the return of defective items:
1. Locate the serial number(s) of the item(s) to be returned.
2. Determine the date the item(s) was received.
3. Contact Transition Networks Technical Support to determine if the problem can be
corrected on site.
If not, and the product is covered by warranty, then:
•Call the distributor directly or contact TN.
•Request a Return Material Authorization (RMA).
•Ship the item, prepaid in original packaging to Transition Networks at the above
address.
•Include the RMA number on the outside of the carton and/or on the Packing List.
•Include a copy of the RMA form.
•Include a copy of the original invoice or packing list (if possible) to expedite
processing.
•The item(s) may be shipped by the customer or the distributor.
•Transition Networks will repair or replace the unit, at TN’s discretion, and cover the
cost of the return freight to the distributor or to the customer, whichever requested
the RMA number.
If the item(s) was received more than five years ago, or if the item(s) is no longer covered by
warranty for other reasons, then:
•Call the distributor or contact TN.
•Request a Material Repair Authorization number (MRA).
•Ship the item(s), prepaid, in the original packaging to Transition Networks at the
above address.
•Include the MRA number on the outside of the carton add/or on the Packing List.
•Include a copy of the MRA form.
•Include a copy of the original invoice or packing list (if possible) to expedite processing.
•Only the customer (end-user) may send the items(s) to TN.
•TN will contact the customer after the item(s) have been received, inspected, and a
cost estimate of the repair determined.
•The repair charges may be billed, with customer’s approval, though the distributor, or
on a prepaid or C.O.D. basis directly to the customer. The charges will include the
cost of shipping.
The return authorization numbers are valid only for 90 days from the date issued.

LAN Master™ TX8 12
3100BASE-TX 8-Port Hub
LAN Master™ TX8 Connectors and Status LEDs
RJ-45 Connectors
Eight (8) 100BASE-TX RJ-45 connectors are located at the front of the
LAN Master™TX8. The RJ-45 jacks support connection to Category 5
shielded or unshielded 100 ohm twisted pair 100BASE-TX cable.
Power Connector
An external power connector is located at the back of the LAN
Master™TX8.
Status LEDs
Status LEDs are located at the front of the LAN Master™TX8.
P(O)W(E)RIlluminated green: Hub powered ON.
COL(LISION)Illuminated amber: Collision detected during data
transmission on ANY port.
LINK/ACTIVITY Illuminated green: Port link established.
Flashing green: Data being received.
PARTITION/JABBER Flashing yellow: Data jabber and error detected
on port.
Illuminated yellow: Port partitioned and isolated.
Warranty Statement
A. Five Year Warranty
Transition Networks, Inc. (TN) warrants, for a period of five years, that TN products (with
the exception of power supplies and fans that TN warrants for two years) will be free from
defects in materials and workmanship, and will be in conformity with TN’s specifications.
TN’s warranty on products manufactured by or assembled for TN in accordance with a
customer’s specifications, is a five-year warranty that the goods conform to such
specifications.
The warranty is invalidated if the goods have been subject to alterations, misuse, accident,
Acts of God (e.g., damage by floods, lightning strikes, Etc.), tampering, improper
maintenance, improper installation, or abuse. If the user is unsure about the proper means
of installing or using the equipment, contact TN’s free Technical Support or Network
Design Services, which can be reached by:
Telephone 1.800.LAN.WANS or 612.941.7600
Fax [phone]
E-mail [email protected]
Internet http://www.transition.com
THE ABOVE WARRANTY IS EXCLUSIVE AND EXTENDS ONLY TO PRODUCTS
ASSEMBLED BY TRANSITION NETWORKS, INC. TO THE EXTENT PERMITTED BY LAW,
TN DOES NOT MAKE AND DISCLAIMS ALL OTHER WARRANTIES, EXCEPT TITLE,
EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY OF
DESCRIPTION, MERCHANTIBILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-
INFRINGEMENT, AND ANY WARRANTY BASED UPON PRIOR WRITTEN OR ORAL
REPRESENTATIONS REGARDING SUCH PRODUCTS MADE BY TN, ITS EMPLOYEES,
AGENTS, OR REPRESENTATIVES.
B. Limitations and Exclusions
If the customer believes any goods sold by TN are defective and within the warranty period,
the following general procedure will be followed:
1. Locate the serial number and delivery date of the item(s).
2. Notify TN within the warranty period.
3. TN will promptly issue a return authorization form for the goods.
4. Upon receiving the form, the customer will promptly return the item(s) at customers
own expense, shipped prepaid, to the distributor from which it was purchased, or
directly to TN.
TN will only accept goods for return if the following conditions have been met:
1. A return form is obtained from TN.
2. The freight charges have been prepaid by the customer.
3. Goods are re-packed in their original packaging.
If under warranty TN shall, at its option, (1) repair the goods free of charge (2) replace the
goods free of charge, or (3) accept the return of the item(s) and credit the current price to
the reseller (within 90 days of purchase), or (4) if the goods are not under warranty, will
repair the item(s) at a minimum charge of USD $200 (two hundred U.S. dollars) per item.
THIS IS THE EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY. IN NO EVENT
SHALL TRANSITION NETWORKS BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES OF ANY KIND, WHETHER FOR BREACH OF ANY
CONDITION OF SALE, FOR NEGLIGENCE, ON THE BASIS OF STRICT LIABILITY,
CONTRACT, OR OTHERWISE AND IRRESPECTIVE OF WHETHER TN IS INFORMED BY
CUSTOMER OF THE POSSIBILITY OF SUCH DAMAGES IN ADVANCE OF THIS SALE.

LAN Master™ TX8 4
11 100BASE-TX 8-Port Hub
2. SITE CONSIDERATIONS
The site for the LAN Master™TX8 hub must provide:
•AC power outlet for each hub
•Adequate ventilation
•Standard environmental conditions
•Isolation from electrical noise, including radio transmitters
and broadband amplifiers, motors, high power electrical
lines, or fluorescent light fixtures.
Additionally:
•The twisted pair cables should not run in the same conduit
with power line cables
•Phone lines should be separated from data cables
•Flat or “silver satin”wires should not be used.
And:
•Since the LAN Master™TX8 functions as an Ethernet
Repeater, the entire installation should comply with the IEEE
Ethernet 802.3 specification.
5. MAINTENANCE
WARNING: DO NOT, UNDER ANY CIRCUMSTANCES,
open and attempt to repair the LAN Master™ TX8
100BASE-TX 8-Port Hub. Failure to observe this warning
could result in personal injury or death from electrical
shock.
NOTE: Failure to observe the above warning will immediately void
the warranty.
Fault Isolation
If two network devices fail to communicate through the LAN
Master™TX8, consider the following:
•Are the LEDs described in the previous section functioning
properly?
•Do network devices have Link Integrity enabled?
•Do network devices communicate when the LAN Master™
TX8 is not installed between them?
•Is flat or “silver satin”wire used in site internal wiring?
•Are internal wiring patch cords, punch down blocks, and
wall jacks properly pinned or configured?
•Are network interface cards properly configured?
Technical Support Contact
For assistance in fault isolation and in maintaining the LAN
Master™TX8 100BASE-TX 8-Port Hub, contact:
Technical Support [phone]
or your local distributor.

LAN Master™ TX8 10
5100BASE-TX 8-Port Hub
3. INSTALLATION
NOTE: LAN Master™TX8 Link Integrity cannot be disabled. All
devices connected to the LAN Master™TX8 MUST have link functions
enabled.
To install the LAN Master™TX8:
•Unpack the LAN Master™TX8 Hub.
•Install LAN Master™TX8 on shelf or in rack
•Optionally cascade LAN Master™TX8 hubs
•Connect 100BASE-TX cable to LAN Master™TX8
•Connect the LAN Master™TX8 to power.
Direction is provided in the pages that follow.
Unpacking the LAN Master™ TX8
The LAN Master™TX8 packing contents should include the following:
Item Part Number
LAN Master™TX8 HB-E-TX-8
Power Cord 3344, 3347, 3348, 3349, or 3523,
(depending upon power configuration
in country where installed)
User’s Guide 33012
4. OPERATION
The LAN Master™TX8 normally requires no intervention beyond
occasionally monitoring the Power and Port Status LEDs.
Status LEDs
Status LEDs are located at the front of the LAN Master™TX8.
P(O)W(E)RIlluminated green: Hub powered ON.
COL(LISION)Illuminated amber: Collision detected during
data transmission on ANY port.
LINK/ACTIVITY Illuminated green: Port link established.
Flashing green: Data being received.
PARTITION/JABBER Flashing yellow: Data jabber and error
detected on port.
Illuminated yellow: Port partitioned and
isolated.

LAN Master™ TX8 100BASE-TX 8-Port Hub 6
9
Installing LAN Master™ TX8 in 19-inch Rack
NOTE: Optionally, the LAN Master™TX8 can be installed on a table or
other flat, stable surface.
NOTE: The LAN Master™TX8 is shipped with attached brackets for
standard 19-inch rack installation. Rackmount screws and clip nuts are
NOT provided.
To install the LAN Master™TX8 in 19-inch rack:
1. Locate four (4) screws (and clip nuts, if necessary) for each LAN
Master™TX8 to be installed.
2. Carefully align the LAN Master™TX8 between the 19-inch
rack mounting rails at the installation position.
3. Install two screws through right front bracket and two screws
through left front bracket, using clip nuts if necessary.
Connecting Power to LAN Master™ TX8
To power ON the LAN Master™TX8:
1. Locate the power receptacle on the back of the LAN Master™
TX8.
2. Connect the LAN Master™TX8 power connector end of the
power cord to the LAN Master™TX8.
3. Connect the external power connector end of the power cord
to external AC power.
NOTE: After power is supplied to the LAN Master™TX8, the green
Power LED is illuminated.

LAN Master™ TX8 100BASE-TX 8-Port Hub 8
7
Optionally Cascading Two LAN Master™ TX8
Hubs
Two LAN Master™TX8 hubs can be cascaded using the two
connections at the front of each hub that are labelled ‘Port 8’.
To cascade two LAN Master™TX8 hubs:
1. Locate or build 100BASE-TX cable with the following
characteristics:
•803.2 compliant (See page 15)
•cable length less than 5 meters
•male RJ-45 plug connectors installed at both ends of cable.
2. Connect male RJ-45 plug connector at one end of 100BASE-TX
cable to Port 8 connector marked MDI-X.
3. Connect male RJ-45 plug connector at other end of 100BASE-
TX cable to Port 8 connector marked MDI.
Up to 5 meters
Connecting 100BASE-TX Cable
To connect 100BASE-TX Cable to LAN Master™TX8 RJ-45
connectors:
1. Locate or build 100BASE-TX cables with the following
characteristics:
•803.2 compliant (See page 15)
•cable length less than 100 meters
•male RJ-45 plug connectors installed at both ends of
cable.
2. Connect male RJ-45 plug connector at one end of 100BASE-
TX cable to LAN Master™TX8 RJ-45 jack connector.
3. Connect male RJ-45 plug connector at other end of 100BASE-
TX cable to terminal device RJ-45 jack connector.
Up to 100 meters
Up to 100 meters
Up to 5 meters