For assistance in installing, using, or
maintaining the TRANSITION Networks
Model 0403 Ethernet Pocket Hub,
contact TRANSITION Networks
Technical Support
at:
(800) 260-1312
or contact your local distributor.
7356.C
™
™
Pocket HubEthernet
(E-TBT-HB-0403)
Model 0403
Compliance Information
UL Listed
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 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 his own cost.
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.
Copyright Restrictions
© 1995 TRANSITION Networks Inc.
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 Inc.
Trademark Notice
All registered trademarks and trademarks are the property of their
respective owners.
Model 0403 Ethernet™ Pocket Hub™
16
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.
Table of Contents
1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . 1
The 0403 Ethernet Pocket Hub . . . . . . . . . . . . . . . . . . . . . . .1
0403 Pocket Hub Features . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Networking the 0403 Pocket Hub . . . . . . . . . . . . . . . . . . . . . . .2
0403 Ethernet Pocket Hub Connectors . . . . . . . . . . . . . . . . .3
RJ-45 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Power Supply Adapter Connector . . . . . . . . . . . . . . . . . . . . . . .3
Status LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2 SITE CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . 4
Ensuring Compliance with Ethernet 802.3 . . . . . . . . . . . . . . .5
Segment Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Ensuring Correct 10BaseT Configuration . . . . . . . . . . . . . . . .6
Straight Through/Crossover Cable Orientation . . . . . . . . . . . . . .6
Straight Through/Crossover Pin Specifications . . . . . . . . . . . . . .6
3 INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Unpacking 0403 Pocket Hub . . . . . . . . . . . . . . . . . . . . . . . .7
Connecting 10Base2 Cable . . . . . . . . . . . . . . . . . . . . . . . . . .8
Connecting 10BaseT Cable . . . . . . . . . . . . . . . . . . . . . . . . . .9
Connecting Power to 0403 Pocket Hub . . . . . . . . . . . . . . . .10
4 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Monitoring Power LED . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Monitoring Link/Transmit LEDs . . . . . . . . . . . . . . . . . . . . . .11
5 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . 12
Fault Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Technical Support Contact . . . . . . . . . . . . . . . . . . . . . . . . .12
0403 ETHERNET POCKET HUB SPECIFICATIONS . . . . . . 13
CABLE SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
WARRANTY STATEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Model 0403
i
15
Ethernet™ Pocket Hub™
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 612.941.2322
E-mail techsupport@transition.com
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 NONINFRINGEMENT, 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.
Model 0403
14
1
Ethernet™ Pocket Hub™
1. INTRODUCTION
This guide is intended for the system or network administrator
responsible for installing and monitoring a TRANSITION Networks
0403 Ethernet Pocket Hub. A working knowledge of local area
network (LAN) operations, including familiarity with
communications protocols used on interconnected LANs, is
assumed.
The 0403 Ethernet Pocket Hub
The Model 0403 10BaseT 4-Port Ethernet Hub (E-TBT-HB-0403), is
a low cost Ethernet repeater. Designed to meet IEEE 802.3 10BaseT
standards, the 0403 Pocket Hub is a fully functional repeater in a
compact (4.80" X 2.77" X 0.95”) case.
0403 Ethernet Pocket Hub Features
• automatic link partitioning (jabber function isolates network
failures)
• preamble regeneration
• automatic polarity detection and correction
Ethernet™
Pocket Hub™
4 3 2 1
Power
1
2
3
4
E-TBT-0403
Link/Transmit
networks
TRANSITION
Mpls, MN 55344
Cable Specifications
Cable Characteristics
The physical characteristics of the 10BaseT cable must meet or exceed
IEEE 802.3 10BaseT specifications.
10BaseT Cable Specifications
Either shielded or unshielded twisted pair can be used. Level 3 wire or
better is recommended.
• Gauge. . . . . . . . . . . . . . . . . . 26 to 22 AWG
• Attenuation . . . . . . . . . . . . . Less than 11.5 dB @ 5-10 MHz
• Differential Characteristic . . 85 -110 Ω Impedance
@ 10 MHz
• Maximum Distance . . . . . . . 100 Meters (330 Feet)
Segment Distance
Media Maximum Maximum Minimum Maximum
Segment Number Segment Medium Medium
Type MAU/ Length Propagation End to End
Segment (meters) Velocity
†
Propagation
Delay/Segment
10Base2 30 185 0.65 c 950
10BaseT 2 100
†††
0.59 c 1000
†
c = 3 x 108meters/second
†††
Maximum segment length depends on the cable characteristics
Model 0403
2
13
Ethernet™ Pocket Hub™
Networking the 0403 Ethernet Pocket Hub
The 0403 Pocket Hub can function as the network backbone in both
simple and complex networks.
When centrally located in a small installation, the 0403 Pocket Hub
alone provides a simple, economical network solution.
When linked to other 0403 Pocket Hubs or to other 802.3 compliant
Ethernet repeaters, the Pocket Hubs function in complex Ethernet
networks.
Ethernet™
Pocket Hub™
networks
TRANSITION
Mpls, MN 55344
Ethernet™
Pocket Hub™
Ethernet™
Pocket Hub™
Ethernet™
Pocket Hub™
Ethernet™
Pocket Hub™
Ethernet™
Pocket Hub™
networks
TRANSITION
Mpls, MN 55344
networks
TRANSITION
Mpls, MN 55344
networks
TRANSITION
Mpls, MN 55344
networks
TRANSITION
Mpls, MN 55344
networks
TRANSITION
Mpls, MN 55344
Model 0403 Ethernet Pocket Hub
Specifications
Dimensions
4.80" X 2.77" X 0.95" (122mm x 70mm x 24mm)
Environment
Temperature: 0-50°C,
Humidity 10-90%, non condensing,
Altitude 0-10,000 feet.
Power Supply Adapter
AC Input:
PN
Requirement Location
3518 120 volts, 60 hertz, 28 watts USA/Canada/Mexico
3516 230 volts, 50 hertz, 28 watts Europe
3514 100 volts, 50-60 hertz, 28 watts Japan
3517 240 volts, 50 hertz, 28 watts United Kingdom
3515 240 volts, 50 hertz, 28 watts Australia
DC Output:
9 volts at 500 mA maximum.
Model 0403
12
3
Ethernet™ Pocket Hub™
0403 Ethernet Pocket Hub Connectors and
Status LEDs
RJ-45 Connectors
Four (4) 10BaseT RJ-45 jack
connectors are located at one
end of the 0403 Pocket Hub.
The RJ-45 jacks support
connection to shielded or
unshielded 100 ohm twisted
pair 10BaseT cable.
BNC and Power Supply Adapter Connectors
An external power supply
adapter connector and a
BNC connector are located
at the other end of the 0403
Pocket Hub. The power
supply adapter connector
supplies external power. The
BNC connector supports one
connection to 10Base2
(thinnet) cable.
Status LEDs
Power and Link/Transmit
status LEDs are located at
the side of the 0403 Pocket
Hub. The Power LED
indicates connection to
power. The Link/ Transmit
LEDs track the four 0403
Pocket Hub connections to
10BaseT.
5. MAINTENANCE
WARNING: DO NOT, UNDER ANY CIRCUMSTANCES,
open and attempt to repair the 0403 Pocket Hub or power
supply adapter unit. 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 0403
Pocket Hub, 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 0403 Pocket
Hub 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?
• Is the thinnet cable unbroken and properly connected?
• Are network interface cards properly configured?
Technical Support Contact
For assistance in fault isolation and in maintaining the 0403 Pocket
Hub, contact:
TN Technical Support (800) 260-1312
or your local distributor.
RJ-45 Connectors
BNC Connector
Power Supply Adapter
Connector
Status LEDs
Model 0403
4
11
Ethernet™ Pocket Hub™
4. OPERATION
The 0403 Pocket Hub normally requires no intervention beyond
occasionally monitoring the Power and Link/Transmit LEDs.
Monitoring Power LED
The green Power LED is illuminated when the Pocket Hub is
connected to power.
Monitoring Link/Transmit LEDs
Each of the green Link/Transmit LEDs , associated with one of the
eight RJ-45 ports:
• is illuminated when a device is connected to the RJ-45
port
• flashes slowly as data is transmitted
• flashes quickly if the associated RJ-45 port has been
automatically partitioned.
Power LED
Link/Transmit LEDs
2. SITE CONSIDERATIONS
The site for the 0403 Ethernet Repeater 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 0400A Ethernet Pocket Hub functions as an
Ethernet Repeater, the entire 0400A Ethernet Repeater Hub
installation should comply with the IEEE Ethernet 802.3
specification, including segment number.
• RJ-45 connected cables should be configured as crossover
or straight through according to installation requirements.
Model 0403
10
5
Connecting Pocket Hub to Terminal Devices
Use a straight through cable to connect Pocket Hub to terminal
devices.
Connecting Power to 0403 Pocket Hub
To power ON the 0403 Pocket Hub:
1. Locate the power receptacle on the back of the 0403
Pocket Hub.
2. Connect the 0403 Pocket Hub power connector end of
the power supply adapter to the Pocket Hub.
3. Connect the external power connector end of the power
supply adapter to external AC power.
NOTE: After the power supply adapter is connected to the 0403
Pocket Hub and to external power, the green Power LED is
illuminated.
Ensuring Compliance with Ethernet 802.3
Ethernet 802.3 specifications define segment number, as well as cable
characteristics. (A segment is the cable connection between cable
interfaces in an Ethernet LAN. Up to thirty 10Base2 connections can
be made in one segment.)
When connecting Pocket Hubs, the transmission path between any
two Data Terminating Equipment (DTE) terminals can consist of no
more than five segments.
To assign segment numbers to cable connections:
1. Determine the two terminals in the network which are
separated by the greatest number of segments.
2. Assign a segment path between the terminals by labeling the
cable connected to one of the terminals “segment 1” and the
segment connected to the other terminal “segment n” (n =
total number of segments ≤ 5).
3. To verify that no segment paths contain more than n
segments, assign segment paths and numbers to all other
terminals.
2
3
TRANSITION
Ethernet™
Pocket Hub™
Ethernet™
Pocket Hub™
Ethernet™
Pocket Hub™
Ethernet™
Pocket Hub™
5
1
4
5
2
2
3
4
3
3
4
4
4
4
4
4
5
Ethernet™
Pocket Hub™
networks
TRANSITION
Mpls, MN 55344
networks
TRANSITION
Mpls, MN 55344
networks
TRANSITION
Mpls, MN 55344
networks
TRANSITION
Mpls, MN 55344
networks
TRANSITION
Mpls, MN 55344
Ethernet™
Pocket Hub™
networks
TRANSITION
Mpls, MN 55344
#3
Straight-through 10BaseT
Model 0403
6
9
Ethernet™ Pocket Hub™
Connecting 1 0BaseT Cable (continued)
Connecting to External Hub through Wall Outlet
Use a crossover cable to connect Pocket Hub to the wall plate.
Use a straight through cable to connect Pocket Hub to terminal
devices.
Connecting two Pocket Hubs
Use a crossover cable to connect Pocket Hubs.
Use a straight through cable to connect Pocket Hub to terminal
devices.(using straight through cable orientation) or to Pocket Hub
RJ-45 jack connector (using crossover cable orientation).
wall plate
#1
Ethernet™
Pocket Hub™
networks
TRANSITION
Mpls, MN 55344
Straight-through 10BaseT
Crossover 10BaseT
Ethernet™
Pocket Hub™
networks
TRANSITION
Mpls, MN 55344
Straight-through 10BaseT
Crossover 10BaseT
#2
Ethernet™
Pocket Hub™
networks
TRANSITION
Mpls, MN 55344
Ensuring Correct 10BaseT Configuration
The 10BaseT cable and RJ-45 jacks for Hub to Terminal connections
must be configured as straight through. The 10BaseT cable and RJ-45
jacks for Hub to Hub connections must be configured as crossover.
1
8
RJ-45 PLUG
RJ-45 JACK
18234
5
6
7
The two active pairs in a
10BaseT 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.
Crossover Cable
at RJ-45 Plug
Hub . . . . . . . . . . . . . . .Hub
RJ-45 Male . . . . . . . . . . . . . . .RJ-45 Male
1 . . . . . . . . . . . . . . . . . . .3
2 . . . . . . . . . . . . . . . . . . .6
3 . . . . . . . . . . . . . . . . . .1
6 . . . . . . . . . . . . . . . . . .2
Straight Through Cable
at RJ-45 Plug
Hub . . . . . . . . . . . . . . . .PC, transceiver, NIC, printer
RJ-45 Male . . . . . . . . . . . . . . .RJ-45 Male
1 . . . . . . . . . . . . . . . . . . .1
2 . . . . . . . . . . . . . . . . . .2
3 . . . . . . . . . . . . . . . . . .3
6 . . . . . . . . . . . . . . . . . . .6
Model 0403
8
7
Ethernet™ Pocket Hub™
Connecting 1 0Base2 Cable
NOTE: 10Base2 cable MUST be properly terminated. Failure to
terminate 10Base2 cable using 50 ohm terminators will cause data
transfer to fail.
The 10Base2 segment MUST be grounded to “earth ground”.
Up to thirty 10Base2 connections can be made in any one segment.
Connecting 1 0BaseT Cable
To connect 10BaseT Cable to Pocket Hub RJ-45 connectors:
1. Locate or build 10BaseT cables with the following
characteristics:
• 802.3 compliant (See page 14)
• correct (straight through or crossover) cable configuration
for site installation (See page 6)
• male RJ-45 plug connectors installed at both cable ends.
2. Connect male RJ-45 plug connector at one end of 10BaseT
cable to Pocket Hub RJ-45 jack connector.
3. Connect male RJ-45 plug connector at other end of 10BaseT
cable to DTE terminal RJ-45 jack connector (using straight
through cable orientation) or to Pocket Hub RJ-45 jack
connector (using crossover cable orientation). NOTE:
Examples are provided in the pages that follow.
3. INSTALLATION
NOTE: 0403 Ethernet Pocket Hub Link Integrity cannot be
disabled. All devices connected to the Pocket Hub MUST
have link functions enabled.
To install the 0403 Ethernet Pocket Hub:
• Unpack the 0403 Pocket Hub.
• Connect 10Base2 Cable to the 0403 Pocket Hub.
• Connect 10BaseT Cable to the 0403 Pocket Hub.
• Connect the 0403 Pocket Hub to power.
Direction is provided in the pages that follow.
Unpacking the 0403 Pocket Hub
The 0403 Ethernet Pocket Hub packing contents should include the
following:
Item Part Number
0403 Pocket Hub E-TBT-HB-0403
Power Supply Adapter 3518, 3517, 3516, 3515, or 3514,
(depending upon power configuration
in country where installed)
User’s Guide 7349
Ethernet™
Pocket Hub™
networks
TRANSITION
Mpls, MN 55344
Ethernet™
Pocket Hub™
Ethernet™
Pocket Hub™
50 ohm terminator
50 ohm terminator
networks
TRANSITION
Mpls, MN 55344
networks
TRANSITION
Mpls, MN 55344
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