Allied Telesis AT-FS201 Series User manual

AT-FS201
AT-FS202
AT-FS202SC/FS1
Bridging Media Converters
Version 4
Installation Guide
PN 613-000400 Rev A
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Copyright ©2006 Allied Telesyn, Inc.
www.alliedtelesyn.com
All rights reserved. No part of this publication may be reproduced without prior written
permission from Allied Telesyn, Inc.
Ethernet is a registered trademark of Xerox Corporation. All other product names, company
names, logos or other designations mentioned herein are trademarks or registered
trademarks of their respective owners.
Allied Telesyn, Inc. reserves the right to make changes in specifications and other
information contained in this document without prior written notice. The information provided
herein is subject to change without notice. In no event shall Allied Telesyn, Inc. be liable for
any incidental, special, indirect, or consequential damages whatsoever, including but not
limited to lost profits, arising out of or related to this manual or the information contained
herein, even if Allied Telesyn, Inc. has been advised of, known, or should have known, the
possibility of such damages.

iii
Electrical Safety and Emission
Compliance Statement
Standards: This product meets the following standards.
RFI Emissions FCC Class A, EN55022 Class A,
Warning: In a domestic environment this product may cause radio interference
in which case the user may be required to take adequate measures.
Immunity EN55024
Electrical Safety EN60950 (TUV), UL 60950 (CULUS),
CSA 950
Laser Safety EN60825
Warning: Class 1 Laser product. 1
This is a “Class 1 LED Product” (AT-FS201 model).
Warning: Do not stare into the Laser beam. 2
At time of installation, the Fiber Optic Lasers comply with FDA Radiation
Performance Standard 21CFR Subchapter J, applicable at date date of
manufacture.
U.S. Federal Communications Commission
Declaration of Conformity
Radiated Energy
Note: This equipment has been tested and found to comply with the limits for
a Class A digital device pursuant to Part 15 of FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with this 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 expense.
Note: Modifications or changes not expressly approved of by the
manufacturer or the FCC, can void your right to operate this equipment.
Industry Canada
This Class A digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du
Règlement sur le matériel brouilleur du Canada.

Electrical Safety and Emission Compliance Statement
iv
Important: Appendix C contains translated safety statements for installing this equipment.
When you see the , go to Appendix C for the translated safety statement in
your language.
Wichtig: Anhang C enthält übersetzte Sicherheitshinweise für die Installation dieses
Geräts. Wenn Sie sehen, schlagen Sie in Anhang C den übersetzten
Sicherheitshinweis in Ihrer Sprache nach.
Importante: El Apéndice C contiene mensajes de seguridad traducidos para la instalación
de este equipo. Cuando vea el símbolo , vaya al Apéndice C para ver el
mensaje de seguridad traducido a su idioma.
Important : L'annexe C contient les instructions de sécurité relatives à l'installation de cet
équipement. Lorsque vous voyez le symbole , reportez-vous à l'annexe C
pour consulter la traduction de ces instructions dans votre langue.
Importante: I’Appendice C contiene avvisi di sicurezza tradotti per l’installazione di questa
apparecchiatura. Il simbolo , indica di consultare l’Appendice C per l’avviso
di sicurezza nella propria lingua.
Важно:Приложение C содержит переведенную инструкцию по безопасности при
установке данного устройства. Если Вы встретите , перейдите к
Приложению C для получения переведенной инструкции по безопасности.

v
Contents
Electrical Safety and Emission Compliance Statement .................................iii
Preface ...............................................................................................................vii
How This Guide is Organized .............................................................................vii
Document Conventions......................................................................................viii
Where to Find Web-based Guides.......................................................................ix
Contacting Allied Telesyn..................................................................................... x
Online Support.............................................................................................. x
Email and Telephone Support ...................................................................... x
Returning Products ....................................................................................... x
Sales or Corporate Information..................................................................... x
Chapter 1
Overview ............................................................................................................. 1
Introduction .......................................................................................................... 2
Bridging Media Converter Components............................................................... 4
External Power Supply......................................................................................... 6
Key Features........................................................................................................ 7
Status LEDs ......................................................................................................... 8
Twisted Pair Port.................................................................................................. 9
Port Speed.................................................................................................... 9
Duplex Mode................................................................................................. 9
Auto MDI/MDI-X.......................................................................................... 10
Fiber Optic Port.................................................................................................. 11
Port Speed.................................................................................................. 11
Duplex Mode............................................................................................... 11
Bridging Media Converter Performance............................................................. 12
DIP Switches...................................................................................................... 13
MAC Address Table........................................................................................... 14
Store and Forward ............................................................................................. 15
Network Topology .............................................................................................. 16

Contents
vi
Chapter 2
Installation ........................................................................................................ 17
Verifying Package Contents............................................................................... 17
Planning the Installation..................................................................................... 18
Selecting a Site .................................................................................................. 20
Reviewing Safety Guidelines ............................................................................. 21
Installing the Bridging Media Converter ............................................................. 23
Using the Bridging Media Converter on a Desktop..................................... 23
Connecting a 12VDC Powered Unit................................................................... 28
Warranty Registration ........................................................................................ 29
Chapter 3
Troubleshooting............................................................................................... 31
Appendix A
Technical Specifications ................................................................................. 35
Physical.............................................................................................................. 35
Temperature....................................................................................................... 35
Electrical Rating ................................................................................................. 35
Agency Certifications ......................................................................................... 36
RJ-45 Twisted Pair Port Pinouts ........................................................................ 37
Fiber Optic Port Specifications........................................................................... 38
Appendix B
Cleaning Fiber Optic Connectors ................................................................... 41
Using a Cartridge-Type Cleaner ........................................................................ 42
Using a Swab..................................................................................................... 44
Appendix C
Translated Electrical, Safety, and Emission Information ............................. 47

vii
Preface
This guide contains instructions on how to install an AT-FS201,
AT-FS202, and AT-FS202SC/FS1 Bridging Media Converters.
How This Guide is Organized
This guide contains the following chapters and appendices:
Chapter 1, ”Overview” on page 1
Chapter 2, ”Installation” on page 17
Chapter 3, ”Troubleshooting” on page 31
Appendix A, ”Technical Specifications” on page 35
Appendix B, ”Cleaning Fiber Optic Connectors” on page 41
Appendix C, ”Translated Electrical, Safety, and Emission Information”
on page 47
This preface contains the following sections:
“Document Conventions” on page viii
“Where to Find Web-based Guides” on page ix
“Contacting Allied Telesyn” on page x

Preface
viii
Document Conventions
This document uses the following conventions:
Note
Notes provide additional information.
Caution
Cautions inform you that performing or omitting a specific action
may result in equipment damage or loss of data.
Warning
Warnings inform you that performing or omitting a specific action
may result in bodily injury.

AT-FS20x Series Installation Guide
ix
Where to Find Web-based Guides
The installation and user guides for all Allied Telesyn products are
available in portable document format (PDF) on our web site at
www.alliedtelesyn.com. You can view the documents online or
download them onto a local workstation or server.

Preface
x
Contacting Allied Telesyn
This section provides Allied Telesyn contact information for technical
support as well as sales or corporate information.
Online Support
You can request technical support online by accessing the Allied Telesyn
Knowledge Base: www.alliedtelesyn.com/kb. You can use the
Knowledge Base to submit questions to our technical support staff and
review answers to previously asked questions.
Email and Telephone Support
For technical support via email or telephone, refer to the Support &
Services section of the Allied Telesyn web site: www.alliedtelesyn.com.
Returning Products
Products for return or repair must first be assigned a return materials
authorization (RMA) number. A product sent to Allied Telesyn without an
RMA number will be returned to the sender at the sender’s expense.
To obtain an RMA number, contact Allied Telesyn’s Technical Support
group through the Allied Telesyn web site: www.alliedtelesyn.com.
Sales or Corporate Information
You can contact Allied Telesyn for sales or corporate information on our
web site: www.alliedtelesyn.com. To find the contact information for
your country, select Contact Us -> Worldwide Contacts.

1
Chapter 1
Overview
The AT-FS201, AT-FS202, and AT-FS202SC/FS1 Bridging Media
Converters include the following models:
AT-FS201
AT-FS202
AT-FS202SC/FS1
The AT-FS201, AT-FS202, and AT-FS202SC/FS1 Bridging Media
Converters are designed to extend the distance of your network by
converting Fast Ethernet data between twisted pair cabling and fiber optic
cabling. These dual-port converters can also improve the performance of
your network by dividing it into smaller, more manageable segments.
Each converter features a 100Base-FX fiber optic port and a 10Base-T/
100Base-TX twisted pair port. The fiber optic port has either a dual SC or
a dual ST connector and a maximum operating distance of 2 kilometers
(1.24 miles) to 15 kilometers (9.4 miles), depending on the model. The
twisted pair port has a RJ-45 connector with a maximum operating
distance of 100 meters (328 feet).
The fiber optic port operates at 100 Mbps, while the twisted pair port
operates at 10 Mbps or 100 Mbps. Both ports feature half- and full-duplex
operation.
AT-FS201, AT-FS202, and AT-FS202SC/FS1 Bridging Media Converters
can be installed on a desktop or in an AT-MCR12 chassis. These
converters are easy to install and do not require software configuration or
management.

Chapter 1: Overview
2
Introduction
The fiber optic port on the bridging converter offers an important
advantage over fiber optic ports commonly found on Fast Ethernet
equipment. It can simultaneously transmit and receive Ethernet data for
full-duplex operation over a single fiber strand. In comparison, a
conventional fiber optic port requires two fiber strands for full-duplex
operation.
In a conventional fiber optic installation, each fiber optic strand carries
only one data stream at a time and in only one direction, as shown in
Figure 1.
Figure 1. Data Stream on a Single Fiber Strand
The data stream is transmitted at a specific wavelength, typically 850
nanometers (nm), 1310 nm, or 1550 nm. These wavelengths are known
for their low attenuation.
Full-duplex operation in a conventional fiber installation involves two
separate fiber strands, one for transmitting data and another for receiving
data, as shown in Figure 2. Both data streams are transmitted at the
same wavelength, but since each is on a separate strand, the signals
remain separate.
Figure 2. Full-duplex Operation on a Conventional Fiber Optic Installation
The fiber optic port on the bridging converter combines two data streams
onto one fiber optic strand. This allows you to use more of the bandwidth
inherent in fiber cable and so significantly increase the efficiency of your
existing fiber optic backbone network.
Fiber Strand Data Stream
λ1
λ1
λ1

AT-FS20x Series Installation Guide
3
The port can simultaneously send and receive Ethernet packets using the
same wavelength of 1310 nm for both data streams. This allows for full-
duplex operation with just one strand, as shown in Figure 3.
Figure 3. Two Data Streams on a Fiber Strand
The fiber optic port makes these bridging converter extremely useful in
situations where a conventional fiber optic backbone network no longer
has sufficient bandwidth to handle the data traffic. This problem has
become a common occurrence on many networks due to the rapid growth
of data traffic from sources such as voice over IP, multimedia
applications, video conferencing, and the Internet.
The traditional solution to increasing bandwidth on a fiber optic backbone
has been to install additional fiber optic cable. But this can be an
extremely costly and time-consuming process. Additionally, conventional
fiber optic installations are unable to use the extremely large bandwidth
capacity that is inherent in fiber optic cable.
λ1
λ1

Chapter 1: Overview
4
Bridging Media Converter Components
Figure 4 shows the front panel of the AT-FS201 Bridging Media
Converter.
Figure 4. AT-FS201 Front Panel
Figure 5 shows the front panel of the AT-FS202 Bridging Media
Converter.
Figure 5. AT-FS202 Front Panel
Figure 6 shows a front panel of an AT-FS202SC/FS1 Bridging Media
Converter.
Figure 6. AT-FS202SC/FS1 Front Panel
100Base-FX
10Base-T/100Base-TX
AT-FS201 BRIDGING MEDIA CONVERTER IEEE 802.3/802.3U AUTO MDI/MDI-X
LNK/
ACT
FD/
COL
PWR
AUTO
NEG
100M
LNK/
ACT
FD/COL
PORT 2PORT 1
TX RX
CLASS 1
LED PRODUCT
MULTI MODE
10Base-T/100Base-TX
AT-FS202 BRIDGING MEDIA CONVERTER IEEE 802.3/802.3U AUTO MDI/MDI-X
LNK/
ACT
FD/
COL
PWR
AUTO
NEG
100M
LNK/
ACT
FD/COL
PORT 2
100Base-FX
TX RX
PORT 1
MULTI MODE
CLASS 1
LASER PRODUCT
938
AT-FS202SC/FS1 BRIDGING MEDIA CONVERTER IEEE 802.3/802.3U AUTO MDI/MDI-X
LNK/
ACT
FD/
COL
PWR
AUTO
NEG
100M
LNK/
ACT
FD/COL
PORT 2
100Base-FX TX RX
PORT 1
10Base-T/
100Base-TX
SINGLE MODE
CLASS 1
LASER PRODUCT

AT-FS20x Series Installation Guide
5
The back panel of the AT-FS201, AT-FS202, and AT-FS202SC/FS1
Bridging Media Converters features a DC power connector and DIP
switches for manually configuring the ports.
Figure 7 shows the back panel of the AT-FS201, AT-FS202, and
AT-FS202SC/FS1 Bridging Media Converters with a 12VDC power
connector.
Figure 7. Back Panel of the AT-FS201, AT-FS202, and AT-FS202SC/FS1
Bridging Media Converters (12VDC Power Connector)
Table 1 lists the maximum operating distances for the converters.
Table 1. Maximum Operating Distances
Model
100Base-FX 10Base-T/100Base-
TX
Connect
or
Maximum
Operating
Distance1
1. Maximum distance for 100 Mbps optical datalinks is dependent on the follow-
ing factors: type of optical fiber, duplex mode of both end-nodes, and maximum
optical loss budget for each of the optical fiber at the operating optical wave-
length.
Connect
or
Maximum
Operating
Distance2
2. Maximum distance can only be obtained when the UTP/STP cabling is
installed and verified to TIA/EIA 568A Commercial Building Telecommunica-
tions Cabling Standard.
AT-FS201 Dual ST 2 km
(1.24 mi)
RJ-45 100 m
(328 ft)
AT-FS202 Dual SC 2 km
(1.24 mi)
RJ-45 100 m
(328 ft)
AT-FS202SC/FS1 Dual SC 15 km
(9.4 mi)
RJ-45 100 m
(328 ft)
12 V D C
21 34
1222
PORT
10
100
HALF
FULL
OFF
ON
DUPLEX
MODE AUTO NEG
SPEED
(Mbps)

Chapter 1: Overview
6
External Power Supply
The 12VDC-version converters come with the AC/DC power adapter,
shown in Figure 8. This is an approved safety compliant AC power
adapter for the 100 and 240V AC versions with an unregulated output of
12VDC.
Figure 8. AC/DC Power Adapter for the 12VDC Version Converters

AT-FS20x Series Installation Guide
7
Key Features
The AT-FS201, AT-FS202, and AT-FS202SC/FS1 Bridging Media
Converters have the following features:
LEDs for unit and port status
Auto MDI/MDI-X
DIP switches for configuring the ports
Half- or full-duplex operation on both ports
RJ-45 twisted pair connector
Dual SC or Dual ST fiber optic connector
Data packet forwarding and filtering at full wire speed
(10 Mbps to 100 Mbps and 100 Mbps to 100 Mbps)
Store and forward switching mode
Automatic address learning and aging
IEEE 802.3u compliant Auto-Negotiation
External AC/DC power adapter
For use on a desktop, in an AT-WLMT-010 wallmounting bracket or in
an AT-MCR12 chassis

Chapter 1: Overview
8
Status LEDs
Table 2 defines the LEDs for the AT-FS201, AT-FS202, and
AT-FS202SC/FS1 Bridging Media Converters.
Table 2. Status LEDs
LED Color Description
PWR Green Power is applied to the unit.
AUTO
NEG
Green
OFF
Auto-negotiation on the twisted pair port is
enabled.
Auto-negotiation on the twisted pair port is
disabled.
100M Green
OFF
The twisted pair port is operating at 100 Mbps.
The twisted pair port is operating at 10 Mbps.
LNK/
ACT
Green
Blinking
A valid link has been established on the port.
Data is being received or transmitted on the
port.
FD/COL Green
OFF
Blinking
The converter is operating in full-duplex mode.
The converter is operating in half-duplex mode.
Collision are detected on the port.

AT-FS20x Series Installation Guide
9
Twisted Pair Port
The AT-FS201, AT-FS202, and AT-FS202SC/FS1 Bridging Media
Converters have one 10Base-T/100Base-TX twisted pair port. The
twisted pair port features a RJ-45 connector.
Port Speed
The twisted pair port is compliant with the 10Base-T and 100Base-TX
standards and is capable of either 10 Mbps or 100 Mbps operation. You
can set the port speed manually or, since the port is IEEE 802.3u Auto-
Negotiation compliant, you can let the converter set the port speed
automatically. With Auto-Negotiation, the speed of the port is set
automatically by the converter after it determines the speed of the end-
node connected to the port. Auto-negotiation is designed to ensure that
the port on the converter and the end-node are operating at the same
speed and that they are communicating at the highest possible common
speed of the devices.
Duplex Mode
Duplex mode refers to how an end-node receives and transmits data. If
an end-node can receive or transmit data, but not both simultaneously,
the end-node is operating in what is referred to as half-duplex mode. If an
end-node can both receive and transmit data simultaneously, the end-
node is said to be operating in full-duplex mode. Naturally, an end-node
capable of operating in full-duplex can handle data much faster than an
end-node that can only operate in half-duplex mode.
The twisted pair ports on the AT-FS201, AT-FS202, and AT-FS202SC/
FS1 Bridging Media Converters can operate in either half-or full-duplex
mode. They are IEEE 802.3u-compliant and use Auto-Negotiation to set
the duplex mode setting for you automatically.
For Auto-Negotiation to operate properly on a converter, the end-nodes
connected to the converter should also use Auto-Negotiation. If an end-
node does not have this feature and has a fixed duplex mode of full-
duplex, the result will be a duplex mode mismatch between the end-node
and a converter port. A port on the converter connected to an end-node
with a fixed duplex mode of full-duplex will operate at only half-duplex.
This results in the end node using full-duplex and the switch port using
half-duplex. This can produce network performance problems. Should
you encounter this situation, you must configure the port on the end-node
to use Auto-Negotiation or, if it lacks that feature, to half-duplex.

Chapter 1: Overview
10
Auto MDI/MDI-X
An RJ-45 twisted pair port on a 10 Mbps or 100 Mbps Ethernet network
device can have one of two possible wiring configurations: MDI or MDI-X.
The RJ-45 port on a PC, router, or bridge is typically wired as MDI, while
the twisted pair port on a converter or hub is usually MDI-X.
When the twisted pair port on the AT-FS201, AT-FS202, and
AT-FS202SC/FS1 converters is set to Auto-Negotiation, the port features
automatic MDI/MDI-X. The RJ-45 port automatically determines the
configuration of the port on the end-node and then configures itself
appropriately. This feature allows you to use either a straight-through or
crossover cable when connecting an end-node to the twisted pair port.
When the port on the AT-FS201, AT-FS202, and AT-FS202SC/FS1
converter is not set to Auto-Negotiation, the port defaults to MDI-X. To
connect to an end-node that has the same wiring configuration, such as
MDI-X to MDI-X, you would use a crossover twisted pair cable. To
connect to an end-node that has different port wiring configuration, such
as MDI to MDI-X, you would use a straight-through cable.