Allied Telesis AT-GS924GB User Manual



Installation

Gigabit
Ethernet

®

Switch

AT-GS924GB

Guide

PN 613-50432-00 Rev C

Copyright  2003 Allied Telesyn, Inc.
960 Stewart Drive Suite B, Sunnyvale, CA 94085 USA

All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn, Inc.

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.

Electrical Safety and Emission
Statement

Standards: This product meets the following standards.

U.S. Federal Communications Commission

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 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 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 by the manufacturer or the FCC can void your right to operate this
equipment.

Canadian Department of Communications

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.

RFI Emission FCC Class A, EN55022 Class A, VCCI Class A, C-TICK, EN61000-3-2,

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 UL 1950 (UL/cUL)), EN60950 (TUV)

Laser EN60825

Important: Appendix C contains translated safety statements for installing this equipment. When you see the
C for the translated safety statement in your language.

Wichtig: Anhang C enthält übersetzte Sicherheitshinweise für die Installation dieses Geräts. Wenn Sie
Anhang C den übersetzten Sicherheitshinweis in Ihrer Sprache nach.

Vigtigt: Tillæg C indeholder oversatte sikkerhedsadvarsler, der vedrører installation af dette udstyr. Når De ser symbolet
De slå op i tillæg C og finde de oversatte sikkerhedsadvarsler i Deres eget sprog.

Belangrijk: Appendix C bevat vertaalde veiligheidsopmerkingen voor het installeren van deze apparatuur. Wanneer u de
raadpleeg Appendix C voor vertaalde veiligheidsinstructies in uw taal.

Important: L'annexe C contient les instructions de sécurité relatives à l'installation de cet équipement. Lorsque vous voyez le
symbole



Tärkeää: Liite C sisältää tämän laitteen asentamiseen liittyvät käännetyt turvaohjeet. Kun näet
turvaohjetta liitteestä C.

Importante: l’Appendice C contiene avvisi di sicurezza tradotti per l’installazione di questa apparecchiatura. Il simbolo
di consultare l’Appendice C per l’avviso di sicurezza nella propria lingua.

Viktig: Tillegg C inneholder oversatt sikkerhetsinformasjon for installering av dette utstyret. Når du ser
for å finne den oversatte sikkerhetsinformasjonen på ønsket språk.

Importante: O Anexo C contém advertências de segurança traduzidas para instalar este equipamento. Quando vir o símbolo
leia a advertência de segurança traduzida no seu idioma no Anexo C.

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.

Obs! Bilaga C innehåller översatta säkerhetsmeddelanden avseende installationen av denna utrustning. När du ser
till Bilaga C för att läsa det översatta säkerhetsmeddelandet på ditt språk.



2

, reportez-vous à l'annexe C pour consulter la traduction de ces instructions dans votre langue.

EN61000-3-3







3

5

1



4



, go to Appendix



sehen, schlagen Sie in



, skal



ziet,



-symbolin, katso käännettyä



, indica



, åpner du til Tillegg C





, skall du gå

,

iii

Table of Contents

Preface ....................................................................................................................................................................................................................vii

How This Guide is Organized ...........................................................................................................................................................................vii

Document Conventions ...................................................................................................................................................................................viii

Where to Find Current Product Documentation .......................................................................................................................................ix

Contacting Allied Telesyn Technical Support .............................................................................................................................................. x

Online Support............................................................................................................................................................................................... x

Telephone Support....................................................................................................................................................................................... x

Management Software Updates .....................................................................................................................................................................xi

For Sales or Corporate Information ...............................................................................................................................................................xii

Chapter 1

Product Description ...........................................................................................................................................................................................1

Features .....................................................................................................................................................................................................................2

Components ............................................................................................................................................................................................................3

Hardware Feature Description ..........................................................................................................................................................................4

Twisted Pair Ports.......................................................................................................................................................................................... 4

Gigabit Interface Converter (GBIC) Expansion Slots......................................................................................................................... 5

LEDs.................................................................................................................................................................................................................... 6

AC Power Connector.................................................................................................................................................................................... 6

A Few Ethernet Switching Basics ......................................................................................................................................................................7

MAC Address Table....................................................................................................................................................................................... 7

Duplex Mode................................................................................................................................................................................................... 8

Store and Forward......................................................................................................................................................................................... 8

Backpressure and Flow Control ............................................................................................................................................................... 9

Network Topologies ............................................................................................................................................................................................10

Power Workgroup Topology................................................................................................................................................................... 10

Collapsed Backbone................................................................................................................................................................................... 11

Chapter 2

Installation ............................................................................................................................................................................................................13

Reviewing Safety Precautions .........................................................................................................................................................................14

Selecting a Site for the Switch .........................................................................................................................................................................15

Planning the Installation ...................................................................................................................................................................................16

Unpacking the Switch ........................................................................................................................................................................................17

Installing the Switch in a Rack .........................................................................................................................................................................18

Attaching the Rubber Feet ...............................................................................................................................................................................18

Installing an Optional GBIC Module ..............................................................................................................................................................19

Cabling and Powering ON the Switch ..........................................................................................................................................................21

Warranty Registration .........................................................................................................................................................................................25

v

Chapter 3

Troubleshooting ................................................................................................................................................................................................ 27

Appendix A

Technical Specifications ................................................................................................................................................................................31

Physical Specifications .......................................................................................................................................................................................31

Environmental Specifications .........................................................................................................................................................................32

Power Specifications ..........................................................................................................................................................................................33

Safety and Electromagnetic Emissions Certifications ............................................................................................................................34

Connectors .............................................................................................................................................................................................................35

RJ-45 Twisted Pair Port Pinouts............................................................................................................................................................. 35

SC Connector................................................................................................................................................................................................ 36

Appendix B

Translated Electrical Safety and Emission Information .................................................................................................................37

vi

Preface

This guide contains the hardware installation instructions for the
AT-GS924GB Gigabit Ethernet Switch

How This Guide is Organized

This manual contains the following chapters and appendices:

Chapter 1, Product Description, describes the features and
components of the switches.

Chapter 2, Installation, contains the installation instructions for the
switches.

Chapter 3, Troubleshooting, provides information on how to resolve
problems that might occur with the switches.

Appendix A, Technical Specifications, contains the technical
specifications for the switches.

Appendix B, Translated Electrical Safety and Emission Information,
contains translations of the warnings and cautions in the manual.

vii

Preface

Document Conventions

This document uses the following conventions to highlight important
information:

Note

Notes provide additional information.

Warning

Warnings inform you that performing or omitting a specific action
may result in bodily injury.

Caution

Cautions inform you that performing or omitting a specific action
may result in equipment damage or loss of data.

viii

AT-GS924GB Gigabit Ethernet Switch Installation Guide

Where to Find Current Product Documentation

The installation and user guides for all Allied Telesyn products are
available in Portable Document Format (PDF) from the Allied Telesyn
web site at www.alliedtelesyn.com. You can view the documents
online or download them onto a local workstation or server.

ix

Preface

Contacting Allied Telesyn Technical Support

You can contact Allied Telesyn technical support online or by telephone.

Online Support You can request technical support online by accessing the Knowledge

Base from our web site at http://kb.alliedtelesyn.com. You can use the
Knowledge Base to submit questions to our technical support staff and
review answers to previously asked questions.

Telephone

Support

For Technical Support by telephone, contact Allied Telesyn at one of the
following locations:

Americas

United States, Canada, Mexico,
Central America, South America
Tel: [phone]

Asia

Singapore, Taiwan, Thailand,
Malaysia, Indonesia, Korea,
Philippines, China,
India, Hong Kong
Tel: [phone]

Australia

Australia, New Zealand
Tel: [phone]

Europe

Tel: [phone]

Germany

Germany, Switzerland, Austria,
Eastern Europe
Tel: [phone]

Italy

Italy, Spain, Portugal, Greece,
Turkey, Israel
Tel: [phone]

Japan

Tel: [phone]

United Kingdom

United Kingdom, Denmark, Norway,
Sweden, Finland, Iceland
Tel: [phone]

France

France, Belgium, Luxembourg, The
Netherlands, Middle East, Africa
Tel: [phone]

x

Management Software Updates

Allied Telesyn periodically updates the management software programs
for managed products. You can obtain a new version of a management
software program from our web site at www.alliedtelesyn.com or our
FTP server at ftp.alliedtelesyn.com. To use the FTP server, enter
anonymous for the user name when you log in and your e-mail address
for the password.

AT-GS924GB Gigabit Ethernet Switch Installation Guide

xi

Preface

For Sales or Corporate Information

You can contact Allied Telesyn for sales or corporate information at the
location listed below:

Allied Telesyn, Inc.

19800 North Creek Parkway, Suite 200
Bothell, WA 98011
Tel: [phone]
Fax: [phone]

xii

Chapter 1

Product Description

The AT-GS924GB is an unmanaged, Layer 2 Gigabit Ethernet switch
designed to simplify the task of creating or expanding an Ethernet, Fast
Ethernet, or Gigabit Ethernet network.

The sections in this chapter are as follows:



Features on page 2



Components on page 3



Hardware Feature Description on page 4



A Few Ethernet Switching Basics on page 7



Network Topologies on page 10

1

Product Description

Features

AT-GS924GB Gigabit Ethernet switch features include:



24 10/100/1000 Mbps twisted pair ports



2 GBIC expansion slots



Visual diagnostic LEDs



Auto-negotiation (IEEE 802.3u-compliant)



Backpressure and flow control (IEEE 802.3x-compliant)



Store and forward packet handling



MAC address table capable of storing up to 32K entries with
automatic aging

2

Components

AT-GS924GB Gigabit Ethernet Switch Installation Guide

Figure 1 illustrates the front panel of the AT-GS924GB switch.

AT-GS924GB

10/100/1000Base-T Gigabit Ethernet Switch with GBIC Uplinks

1 3 5 7 9 11 13 15 17 19 21 23

2 4 6 8 10 12 14 16 18 20 22 24

10/100/1000Base Twisted Pair PortsPort LEDs

GBIC Expansion Slots

CLASS 1

LASER PRODUCT

DO NOT STARE

INTO BEAM

23 24

Figure 1 Front Panel of the AT-GS924GB switch

Figure 2 illustrates the back panel of the AT-GS924GB switch.

100-240 VAC

AC Power Connector

Figure 2 Back Panel of the AT-GS924GB switch

GBICGBIC

3

Product Description

Hardware Feature Description

The following sections describe hardware features of the
AT-GS924GB Gigabit Ethernet switch:



Twisted Pair Ports



Gigabit Interface Converter (GBIC) Expansion Slots



System and Port LEDs



AC Power Connector

Twisted Pair

Ports

The AT-GS924GB features 24 twisted pair ports.

Type of Connector

The twisted pair ports feature 8-pin, RJ-45 connectors. (For the port
pinouts, refer to RJ-45 Twisted Pair Port Pinouts on page 35.

Speed

The ports are 10Base-T, 100Base-TX, and 1000Base-T compliant and are
capable of 10 megabits per second (Mbps), 100 Mbps, and 1000 Mbps
speeds. The ports are IEEE 802.3u Auto-negotiation compliant. With
Auto-negotiation, the switch automatically matches the highest
possible common speed between each switch port and each end-node.
For example, if an end-node is capable of only 10 Mbps, the switch sets
the port connected to the end-node to 10 Mbps.

Duplex Mode

Each twisted pair port on the switch can operate in either half- or full
duplex mode. The twisted pair ports are IEEE 802.3u-compliant and will
Auto-Negotiate the duplex mode setting.

Note

In order for the switch to set the duplex mode for each port
correctly, the end-nodes that you connect to the switch ports
should also use Auto-Negotiation. Otherwise, a duplex mode
mismatch can occur, affecting network performance. For further
information, refer to Duplex Mode on page 8.

Maximum Distance

Each twisted pair port has a maximum operating distance of 100 meters
(328 feet).

Type of Cabling

For 10 Mbps operation, Category 3 or better 100 ohm shielded or
unshielded twisted pair cabling is required. For 100 or 1000 Mbps
operation, Category 5 and Enhanced Category 5 (5E) 100 ohm shielded
or unshielded twisted pair cabling is required.

4

AT-GS924GB Gigabit Ethernet Switch Installation Guide

Auto-MDI

For port speeds of 10 or 100 Mbps, the ports are auto-MDI. They
automatically configure themselves as either MDI or MDI-X. This feature
allows you to use either straight-through or crossover twisted pair
cables to connect devices to the ports. For port speeds of 1000 Mbps,
you must use a straight through twisted pair cable.

Gigabit

Interface

Converter

(GBIC)

Expansion Slots

The AT-GS924GB Gigabit Ethernet Switch has two Gigabit Interface
Converter (GBIC) expansion slots on the front panel that correspond to
Ports 23 and 24 respectfully. Each slot can accommodate one optional
fiber optic GBIC Ethernet module.

Note

If a GBIC module is installed in expansion slot Port 23 or 24, the
corresponding twisted pair Port 23 or 24 cannot be used.

A GBIC module is a fast and easy way to add an 1000 Mbps fiber optic
port to a Gigabit Ethernet switch. GBIC modules can be used to extend
the distance of your network, build a high-speed backbone network
between switches, or connect additional nodes to the network, such as
high-speed servers.

Figure 3 shows an example of a fiber optic GBIC module.

Figure 3 GBIC Module

Note

For a list of the Allied Telesyn GBIC modules supported by the
AT-GS924GB Gigabit Ethernet Switch, contact your Allied Telesyn
sales representative.

5

Product Description

LEDs The port LEDs on the front panel display port status information. Each

port has four LEDs.

AT-GS924GB

10/100/1000Base-T Gigabit Ethernet Switch with GBIC Uplinks

Figure 4 LEDs

Table 1 below describes the AT-GS924GB port LEDs.

Table 1 Port LED Descriptions

LED State Description

10 Green Indicates that the port is operating at 10

Mbps.

AC Power

Connector

100 Green Indicates that the port is operating at 100

Mbps.

10 and
100

Green Indicates that the port is operating at

1000 Mbps.

ACT OFF Indicates that there is no activity on the

port.

Flashing Green Indicates that the port is transmitting

and/or receiving data packets.

FDX OFF Indicates that the port is operating in

half-duplex mode.

Green Indicates that the port is operating in full-

duplex mode.

The AT-GS924GB switch has a single AC power supply socket on the
back panel with auto-switch AC inputs. Refer to Technical
Specifications on page 31, for the input voltage range. To power ON or
OFF the switch, you connect or disconnect the power cord.

6

A Few Ethernet Switching Basics

An Ethernet switch interconnects network devices, such as workstations,
printers, routers, and other Ethernet switches, so that they can
communicate with each other by sending and receiving Ethernet
frames.

AT-GS924GB Gigabit Ethernet Switch Installation Guide

MAC Address

Table

Every hardware device on your network has a unique MAC address. This
address is assigned to the device by the device’s manufacturer. For
example, when you install a Network Interface Card (NIC) in a computer
so that you can connect it to the network, the NIC already has a MAC
address assigned to it by its manufacturer.

The AT-GS924GB Gigabit Ethernet switch can contain up to 32K entries
on its MAC address table. The switch uses the table to store the MAC
addresses of the network nodes connected to the ports, along with the
port number on which each address was learned.

A switch learns the MAC addresses of the end-nodes by examining the
source address of each packet received on a port. It adds the address
and port on which the packet was received to the MAC table if the
address had not already been entered in the table. The result is a table
that contains all the MAC addresses of the devices that are connected to
the switch’s ports, and the port number where each address was
learned.

When the switch receives a packet, it also examines the destination
address and, by referring to its MAC address table, determines the port
on which the destination node is connected. It then forwards the packet
to the appropriate port and on to the end-node. This increases network
bandwidth by limiting each frame to the appropriate port when the
intended end-node is located, freeing the other switch ports for
receiving and transmitting data.

If the switch receives a packet with a destination address that is not in
the MAC address table, it floods the packet to all the ports on the switch.
If the ports have been grouped into virtual LANs, the switch floods the
packet only to those ports which belong to the same VLAN as the port
on which the packet was received. This prevents packets from being
forwarded into inappropriate LAN segments, increasing network
security. When the destination node responds, the switch adds its MAC
address and port number to the table.

If the switch receives a packet with a destination address that is on the
same port on which the packet was received, it discards the packet
without forwarding it on to any port. Since both the source node and the
destination node for the packet are located on the same port on the
switch, there is no reason for the switch to forward the packet.

7

Product Description

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 end­node 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-GS924GB switch can operate in either
half-or full-duplex mode. They are IEEE 802.3u-compliant and use Auto­Negotiation to set the duplex mode setting for you automatically.

For Auto-Negotiation to operate properly on the AT-GS924GB switch,
the end-nodes connected to the switch should also use Auto­Negotiation. 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 switch port. A port on the AT-GS924GB
switch connected to an end-node with a fixed duplex mode of full­duplex 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 Auto­Negotiation or, if it lacks that feature, to half-duplex.

Store and

Forward

This Gigabit Ethernet Switch uses store and forward as the method for
receiving and transmitting frames. When a Ethernet frame is received on
a switch port, the switch does not retransmit the frame out the
destination port until it has received the entire frame and stored the
frame in a port buffer. It then examines the frame to determine if it is a
valid frame. Invalid frames, such as fragments or runts, are discarded by
the switch. This ensures that only valid frames are transmitted out the
switch ports and that damaged frames are not propagated on your
network.

8

AT-GS924GB Gigabit Ethernet Switch Installation Guide

Backpressure

and Flow

Control

To maintain the orderly movement of data between the end-nodes, an
Ethernet switch may periodically need to signal an end-node to stop
sending data. This can occur under several circumstances. For example,
if two end-nodes are operating at different speeds, the switch, while
transferring data between the end-nodes, might need to instruct the
faster end-node to stop transmitting data to allow the slower end-node
to catch up. An example of this would be when a server operating at 100
Mbps is sending data to a workstation operating at only 10 Mbps.

How a switch signals an end-node to stop transmitting data differs
depending on the speed and duplex mode of the end-node and switch
port. A twisted pair port operating at 100 Mbps port and half-duplex
mode stops an end-node from transmitting data by forcing a collision. A
collision on an Ethernet network occurs when two nodes attempt to
transmit data using the same data link at the same time. A collision
causes end-nodes to stop sending data. When the switch needs to stop a
100 Mbps, half-duplex end-node from transmitting data, it forces a
collision on the data link, which stops the end-node. Once the switch is
ready to receive data again, the switch stops forcing collisions. This is
referred to as backpressure.

A port operating at 100 Mbps and full-duplex mode uses PAUSE frames,
as specified in the IEEE 802.3x standard, to stop the transmission of data
from an end-node. Whenever the switch wants an end-node to stop
transmitting data, it issues this frame. The frame instructs the end-node
to cease transmission. The switch continues to issue PAUSE frames until
it is ready again to receive data from the end-node. This is referred to as
flow control.

9

Product Description

Network Topologies

This section illustrates several of the network topologies that you can
create with the AT-GS924GB Gigabit Ethernet switch.

Power

Workgroup

Topology

The topology shown in Figure 5 is commonly referred to as a power
workgroup topology. Each workstation or node is connected directly to
a port on the switch. Each node has a dedicated data link to the switch
for best performance and reliability. The devices can operate at 10 Mbps,
100 Mbps or 1000 Mbps.

AT-GS924GB

10/100/1000Base-T Gigabit Ethernet Switch with GBIC Uplinks

Legend

1 3 5 7 9 11 13 15 17 19 21 23

2 4 6 8 10 12 14 16 18 20 22 24

AT-GS924GB Gigabit
Ethernet Switch

CLASS 1
LASER PRODUCT
DO NOT STARE

INTO BEAM

GBICGBIC

23 24

10 Mbps

100 Mbps
1000 Mbps

Figure 5 Power Workgroup Topology

10

AT-GS924GB Gigabit Ethernet Switch Installation Guide

Collapsed Backbone

In the topology illustrated in Figure 6, an AT-GS924GB connects Fast
Ethernet switches that have Gigabit Ethernet uplinks. This type of
topology is often referred to as a collapsed backbone topology. The
switch functions as the focal point of the network and transfers an
Ethernet frame between the Fast Ethernet switches only when the
destination node for the frame is on a different switch than the node
that originated the frame. This reduces the amount of unnecessary data
traffic in each workgroup, freeing up bandwidth and improving network
performance.

AT-GS924GB

10/100/1000Base-T Gigabit Ethernet Switch with GBIC Uplinks

Fast Ethernet
Switches with

Gigabit Uplinks

1 3 5 7 9 11 13 15 17 19 21 23

2 4 6 8 10 12 14 16 18 20 22 24

AT-GS924 Gigabit
Ethernet Switch

CLASS 1
LASER PRODUCT
DO NOT STARE

INTO BEAM

GBICGBIC

23 24

7

8

Legend

10 Mbps

100 Mbps
1000 Mbps

6

54

1

2

3

54

6

7

8

1

2

3

8

Figure 6 Collapsed Backbone - Hub Topology

1

2

3

54

6

7

11

Chapter 2

Installation

This chapter contains installation procedures for the AT-GS924GB
Gigabit Ethernet switch. The chapter contains the following sections:







Reviewing Safety Precautions on page 14

Selecting a Site for the Switch on page 15

Planning the Installation on page 16



Unpacking the Switch on page 17



Installing the Switch in a Rack on page 18



Attaching the Rubber Feet on page 18



Installing an Optional GBIC Module on page 19



Cabling and Powering ON the Switch on page 21



Warranty Registration on page 25

13

Installation

Reviewing Safety Precautions

Please review the following safety precautions before you begin to
install the switch or any of its components. Refer to Translated
Electrical Safety and Emission Information on page 37 for translated
safety statements in your language. (The laser warnings apply if you
install an optional fiber optic GBIC module.)

Laser

Class 1 laser product.  6

Laser

Do not stare into the laser beam.  7

Warning
Electric Shock Hazard: To prevent electric shock, do not remove

the cover. There are no user-serviceable parts inside. The unit
contains hazardous voltages and should only be opened by a
trained and qualified technician.  8

Warning
Lightning Danger: Do not work on this equipment or cables

during periods of lightning activity.  9

Warning
Power cord is used as a disconnection device: To de-energize

equipment, disconnect the power cord.  10

Warning
Electrical-Type Class 1 Equipment: This equipment must be

earthed. The power plug must be connected to a properly wired
earth ground socket outlet. An improperly wired socket outlet
could place hazardous voltages on accessible metal parts.  11

Caution

Pluggable Equipment: The socket outlet should be installed near

the equipment and should be easily accessible.  12

Caution

Air vents: The air vents must not be blocked on the unit and must

have free access to the room ambient air for cooling.  13

Caution

Operating Temperature: This product is designed for a maximum

ambient temperature of 40°C.  14

14

Caution

All Countries: Install this product in accordance with local and

National Electric Codes.  15

Selecting a Site for the Switch

Observe the following requirements when choosing a site for your
switch:



If you plan to install the switch in an equipment rack, ensure that
the rack is safely secured and that it will not tip over. Devices in a
rack should be installed starting at the bottom, with the heavier
devices near the bottom of the rack.



If you are installing the switch on a table, ensure that the table is
level and secure.



The power outlet for the switch should be located near the unit
and should be easily accessible.



The site should provide for easy access to the ports on the front of
the switch. This will make it easy for you to connect and
disconnect cables, as well as view the switch’s LEDs.

AT-GS924GB Gigabit Ethernet Switch Installation Guide



To allow proper cooling of the switch, air flow around the unit and
through its vents on the side and rear should not be restricted.



Do not place objects on top of the switch.



Do not expose the switch to moisture or water.



Ensure that the site is a dust-free environment.



You should use dedicated power circuits or power conditioners to
supply reliable electrical power to the network devices.

15

Installation

Planning the Installation

Table 2 contains the cabling specifications for the twisted pair ports.

Speed Type of Cable

Table 2 Twisted Pair Cabling and Distances

Maximum
Operating
Distance

10 Mbps Category 3 or better 100-ohm

100 m (328 ft)
shielded or unshielded twisted pair
cable

100 Mbps Category 5 or Category 5E

100 m (328 ft)
(Enhanced) 100-ohm shielded or
unshielded twisted pair cable

1000 Mbps Category 5 and Category 5E

100 m (328 ft)
(Enhanced) 100-ohm shielded or
unshielded twisted pair cable

Note

The twisted pair ports on the switch feature auto-MDI when
operating at either 10 or 100 Mbps. Each port is individually
configured as MDI or MDI-X when connected to an end-node.
Consequently, you can use either a straight-through or crossover
twisted pair cable when connecting any network device to a
twisted pair port on the switch. A port operating at 10 or 100 Mbps
uses two pairs of twisted pair wiring.

Note

Twisted pair ports operating at 1000 Mbps must use a straight­through cable. A port operating at 1000 Mbps uses four pairs of
twisted pair wiring.

16

Note

For cabling information for an optional GBIC module, refer to the
installation guide included with the module.

Unpacking the Switch

To unpack the switch, perform the following procedure:

1. Remove all components from the shipping package.

Note

Store the packaging material in a safe location. You must use the
original shipping material if you need to return the unit to Allied
Telesyn.

2. Place the switch on a level, secure surface.

3. Ensure the following hardware components are included in your
switch package. If any item is missing or damaged, contact your Allied
Telesyn sales representative for assistance.





AT-GS924GB Gigabit Ethernet Switch Installation Guide

One AT-GS924GB Gigabit Ethernet switch

Two mounting brackets



Six bracketmounting screws



Four rackmounting screws



Four rubber feet



Power cord (Americas, EC, Australia, and UK only)



Installation Guide



Warranty card

17

Installation

Installing the Switch in a Rack

Perform the following procedure to install the switch in a standard
19-inch rack. If you are not installing the switch in a rack, go to the next
procedure:

1. Attach a bracket to one side of the switch using the bracketmounting
screws that came with the switch. See Figure 7.

2. Install the second rackmounting bracket on the other side of the
switch using the remaining bracketmounting screws.

3. Mount the switch in the 19-inch rack using the four rackmounting
screws.

Attaching the Rubber Feet

To use the switch as a desktop unit, perform the following procedure to
attach the rubber feet to the bottom of the switch:

1. Place the unit upside down on a level, secure surface.

2. Attach the four rubber feet to the bottom of the switch.

Figure 7 Attaching Rackmounting Brackets

18

Installing an Optional GBIC Module

To install an optional GBIC module, perform the following procedure:

1. Unpack the GBIC module from its shipping container and store the
packaging material in a safe location.

Figure 8 GBIC Module

Note

You must use the original shipping material if you need to return
the module to Allied Telesyn.

AT-GS924GB Gigabit Ethernet Switch Installation Guide

Warning

A GBIC module can be damaged by static electricity. Ensure that
you observe all standard electrostatic discharge (ESD) precautions,
such as wearing an antistatic wrist strap, to avoid damaging the
module.

2. Check that the GBIC package includes all the items listed below. If any
item is missing or damaged, contact your Allied Telesyn sales
representative for assistance.



One GBIC module



Installation guide



Warranty card

Note

For fiber optic cabling specifications for the module, refer to the
Installation Guide included with the module.

3. Follow these guidelines to ensure the performance of your GBIC:



GBICs are static sensitive. To prevent Electrostatic Discharge
Damage (ESD), follow your normal board and component
handling procedures.

19

Installation



GBICs are dust sensitive. When the GBIC is stored or when a fiber­optic cable is not plugged in, always keep plugs in the GBIC
optical bores.



The most common source of contaminants in the optical bores is
debris picked up on the ferrules of the optical connectors. Use an
alcohol swab or wipe to clean the ferrules of the optical
connector.

Bore

Ferrule

Figure 9 Optical Bore and Ferrule of GBIC Module

Note

Unnecessary removal and insertion of a GBIC could lead to
premature failure.

4. Slide the GBIC module into an expansion slot on the switch. The GBIC
module is completely seated in the slot when it clicks into place.

6

7

8

GBIC

7

CLASS 1

LASER PRODUCT

DO NOT STARE

INTO BEAM

GBIC

8

20

Figure 10 Installing a GBIC Module

5. If you purchased two GBIC modules for the switch, repeat this
procedure to install the second module.

Cabling and Powering ON the Switch

Perform the following procedure to connect the data cables to the
switch ports and to apply power to the switch.

1. Connect the twisted pair data cables to the RJ-45 ports on the switch,
as shown in Figure 11.

AT-GS924GB Gigabit Ethernet Switch Installation Guide

1

2

3

4

Figure 11 Connecting the Twisted Pair Data Cables

When connecting a twisted pair cable to a port, observe the
following guidelines:



An RJ-45 connector should fit snugly into the port on the switch.
The tab on the connector should lock the connector into place.



The ports on the switch are auto-MDI/MDI-X when operating at 10
or 100 Mbps. You can use either a straight-through or crossover
twisted pair cable to connect any type of network device to a port
on the switch when operating at either 10 or 100 Mbps.



For ports operating at 1000 Mbps, use a straight-through cable.



The network should not contain data loops, which can adversely
affect network performance. A data loop exists when two or more
network devices can communicate with each other over more
than one data path.

21

Installation

2. If you installed optional fiber optic GBIC modules, remove the dust
covers from the ports.

CLASS 1

LA

G

SER

B

PR

DO

IC

INTO BEAM

O

NO

DU

T STARE

CT

7

G

B

IC

Figure 12 Removing the Dust Covers from the Fiber Optic Ports

Caution

Do not remove the dust covers if you do not intend to connect the
fiber optic cables at this time. Dust contamination can adversely
impact the operations of the ports.

3. Attach the fiber optic data cables to the fiber optic ports.

CLASS 1

LA

GBIC

SER PR

DO NOT STARE

O

DUCT

INTO BEAM

7

GBIC

22

Figure 13 Attaching a Fiber Optic Cable

AT-GS924GB Gigabit Ethernet Switch Installation Guide

When attaching a fiber optic cable, observe the following
guidelines:



Ensure that the cable connector is firmly locked into place in the
port.



With a dual SC connector, ensure to connect the receiver fiber
port to the transmitter port on the remote end-node, and the
transmitter fiber port to the receiver port on the remote node.



Ensure that you are using the appropriate type of fiber optic
cabling by referring to the installation guide included with the
module.



Ensure that the operating specifications of the switch’s fiber optic
port are compatible with the fiber optic port on the remote end­node. For example, you cannot connect a fiber optic port with a
maximum distance of 2 kilometers (1.24 miles) and an operating
wavelength of 1310 nm to another fiber optic port that has a
maximum distance of 40 kilometers (24.8 miles) and an operating
wavelength of 1550 nm.



The network should not contain data loops, which can adversely
affect network performance. A data loop exists when two or more
network devices can communicate with each other over more
than one data path.

4. Apply AC power to the switch by plugging the power cord into the AC
power connector on the back panel of the unit and plugging the
other end into a wall outlet.

Figure 14 Connecting the AC Power Connector to Switch

23

Installation

Warning

The power cord is used as a disconnection device. To de-energize
equipment, disconnect the power cord.  10

Note

For information on the system LEDs, refer to LEDs on page 6.

The switch is ready for network operations.

24

Warranty Registration

After installing your switch, you can register your product by completing
the enclosed warranty card and sending it to Allied Telesyn.

AT-GS924GB Gigabit Ethernet Switch Installation Guide

25

Chapter 3

Troubleshooting

This chapter contains information on how to troubleshoot the switch in
the event that a problem occurs.

Note

If you are still unable to resolve the problem after following the
instructions in this chapter, contact Allied Telesyn Technical
Support for assistance. Refer to Contacting Allied Telesyn
Technical Support on page x.

Check the PWR LED on the front of the switch. If the LED is OFF,
indicating that the unit is not receiving power, do the following:



Ensure that the power cord is securely connected to the power
source and to the AC connector on the back panel of the switch.



Verify that the power outlet has power by connecting another
device to it.



Try connecting the unit to another power source.



Try using a different power cord.



Verify that the voltage from the power source is within the
required levels for your region.

27

Troubleshooting

For twisted pair ports, verify that the ACT LED for each port is ON. If a
ACT LED is OFF, do the following:



Verify that the end-node connected to the port is powered ON
and is operating properly.



Verify that the twisted pair cable is securely connected to the port
on the switch and to the port on the end-node.



Ensure that the twisted pair cable does not exceed 100 meters
(328 feet).



Verify that you are using the appropriate category of twisted pair
cable: Category 3 or better for 10 Mbps operation and Category 5
and Category 5E for 100 and 1000 Mbps operation.

Note

A 1000Base connection can take from five to ten seconds for the
link to be established.



If either twisted pair Port 23 or 24 is not working properly, verify
that a GBIC module is not installed in the corresponding
expansion Port 23 or 24. If expansion Ports 23 and 24 are currently
being used, then the corresponding twisted pair Port 23 or 24
cannot be used.

For a fiber optic port on an optional GBIC module, verify that the ACT
LED for the port is ON. If the ACT LED is OFF, do the following:



Verify that the GBIC module is completely inserted into the
expansion slot on the front of the switch.



Verify that the end-node connected to the port is powered ON
and is operating properly.



Verify that the fiber optic cable is securely connected to the port
on the switch and to the port on the end-node.



If the fiber optic port has a dual SC connector, verify that the
receiver fiber port is connected to the transmitter port on the
remote end-node, and that the transmitter fiber port is connected
to the receiver port on the remote node.

28



Ensure that you are using the appropriate type of fiber optic cable
and that the cable length does not exceed the allowed maximum
distance. Refer to the GBIC Installation Guide.

AT-GS924GB Gigabit Ethernet Switch Installation Guide



Use a fiber optic tester to test the attenuation on the cable to
determine if the strength of the fiber optic signal falls below
acceptable limits.



Check that the operating specifications (for instance, wavelength
and maximum operating distance) of the fiber optic port on the
remote end-node are compatible with the fiber optic port on the
switch. For example, you cannot connect a fiber optic port with a
maximum distance of 40 kilometers (24.8 miles) and an operating
wavelength of 1550 nm to a remote fiber optic port with an
maximum distance of only 2 kilometers (1.24 miles) and a
wavelength of 1310 nm.



Ensure that the fiber optic ports on the switch and on the end­node are operating at the same speed and duplex mode.

Note

A 1000Base connection can take from five to ten seconds for the
link to be established.

29

Appendix A

Technical Specifications

Physical Specifications

Dimensions: (H x W x D)

4.4 cm x 43.2 cm x 25.0 cm
(1.7 in x 17 in x 9.8 in)

Weight: 5.25 kg (11.60 lbs)

Recommended

Minimum Ventilation
on All Sides: 10 cm (4.0 in)

31

Technical Specifications

Environmental Specifications

Operating Temperature: 0° C to 40° C (32° F to 104° F)

Storage Temperature: -25° C to 70° C (-13° F to 158° F)

Operating Humidity: 5% to 90% non-condensing

Storage Humidity: 5% to 95% non-condensing

Operating Altitude Range: Up to 3,000 m (9,843 ft)

32

Power Specifications

Maximum Power

Consumption: 46 watts

AC Input Electrical

Ratings: 100~240V AC, 2A

Frequency: 50~60 Hz

AT-GS924GB Gigabit Ethernet Switch Installation Guide

33

Technical Specifications

Safety and Electromagnetic Emissions Certifications

Safety: UL 1950 (UL/cUL), EN60950 (TUV), EN60825

EMI: FCC Class A, EN55022 Class A, VCCI Class A,

C-TICK, EN61000-3-2, EN61000-3-3

Immunity: EN55024

Reliability MTBF – 26,000 hours, system (includes

PCBA at 114,000 hours, fan module at
50,000 hours and power module at 99,000
hours)

The MTBF was predicted using Telcordia
SR-332 parts count method for a ground
benign environment at 30ºC.

MTTR – ½ hour for replacement unit on site;
24 hours for advance replacement
shipment

DOA Rate
< 0.1% for out of box (failure within 24
hours)
< 2.7% for early life (failure within 30 days)

34

Connectors

AT-GS924GB Gigabit Ethernet Switch Installation Guide

This section lists the connectors and connector pinouts for the
AT-GS924GB Gigabit Ethernet switch and its components.

RJ-45 Twisted

Pair Port

Pinouts

Figure 15 illustrates the pin layout to an RJ-45 connector and port.

8

1

Figure 15 RJ-45 Connector and Port Pin Layout

Table 3 lists the RJ-45 pin signals when a twisted pair port is operating in
the MDI configuration.

Table 3 MDI Pin Signals (10Base-T or 100Base-TX)

Pin Signal

1TX+

2TX-

8

1

3RX+

6RX-

Table 4 lists the RJ-45 port pin signals when a twisted pair port is
operating in the MDI-X configuration.

Table 4 MDI-X Pin Signals (10Base-T or 100Base-TX)

Pin Signal

1RX+

2RX-

3TX+

6TX-

35

Technical Specifications

Table 5 lists the RJ-45 connector pins and their signals when a
1000Base-T port is operating at 1000 Mbps.

Table 5 RJ-45 1000Base-T Connector Pinouts

1

Pin Pair Signal

11TX and RX+

21TX and RX-

32TX and RX+

43TX and RX+

53TX and RX-

62TX and RX-

74TX and RX+

84TX and RX-

1. Bi-directional data on each pair.

SC Connector The AT-GS924GB Gigabit Ethernet switch uses an SE connector. The SC

connector (shown in Figure 16) is used to connect optional GBIC
modules.

36

Figure 16 SC Connector

Appendix B

Translated Electrical Safety and Emission Information

Important: This appendix contains multiple-language translations for
the safety statements in this guide.

Wichtig: Dieser Anhang enthält Übersetzungen der in diesem
Handbuch enthaltenen Sicherheitshinweise in mehreren Sprachen.

Vigtigt: Dette tillæg indeholder oversættelser i flere sprog af
sikkerhedsadvarslerne i denne håndbog.

Belangrijk: Deze appendix bevat vertalingen in meerdere talen van de
veiligheidsopmerkingen in deze gids.

Important: Cette annexe contient la traduction en plusieurs langues des
instructions de sécurité figurant dans ce guide.

Tärkeää: Tämä liite sisältää tässä oppaassa esiintyvät turvaohjeet usealla
kielellä.

Importante: questa appendice contiene traduzioni in più lingue degli
avvisi di sicurezza di questa guida.

Viktig: Dette tillegget inneholder oversettelser til flere språk av
sikkerhetsinformasjonen i denne veiledningen.

Importante: Este anexo contém traduções em vários idiomas das
advertências de segurança neste guia.

Importante: Este apéndice contiene traducciones en múltiples idiomas
de los mensajes de seguridad incluidos en esta guía.

Obs! Denna bilaga innehåller flerspråkiga översättningar av
säkerhetsmeddelandena i denna handledning.

37

Translated Electrical Safety and Emission Information

Standards: This product meets the following safety standards.

U.S. Federal Communications Commission

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 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 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 by the manufacturer or
the FCC can void your right to operate this equipment.

Canadian Department of Communications

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.



1 RFI Emission FCC Class A, EN55022 Class A, VCCI

Class A, C-TICK, EN61000-3-2,
EN61000-3-3



2 WARNING: In a domestic environment this product may cause radio interference in

which case the user may be required to take adequate measures.



3 Immunity EN55024



4 Electrical Safety UL 1950 (UL/cUL), EN60950 (TUV)



5 Laser EN60825

SAFETY



6 WARNING: Class 1 Laser product.



7 WARNING: Do not stare into the laser beam.



8 ELECTRICAL NOTICES

WARNING: ELECTRIC SHOCK HAZARD
To prevent ELECTRIC shock , do not remove the cover. No user-serviceable parts
inside. This unit contains HAZARDOUS VOLTAGES and should only be opened by a
trained and qualified technician. To avoid the possibility of ELECTRIC SHOCK,
disconnect electric power to the product before connecting or disconnecting the
LAN cables.



9 LIGHTNING DANGER

DANGER: DO NOT WORK on equipment or CABLES during periods of LIGHTNING
ACTIVITY.

38



10 CAUTION: POWER CORD IS USED AS A DISCONNECTION DEVICE. TO DE-ENERGIZE

EQUIPMENT, disconnect the power cord.



11 ELECTRICAL - TYPE CLASS 1 EQUIPMENT

THIS EQUIPMENT MUST BE EARTHED. Power plug must be connected to a properly
wired earth ground socket outlet. An improperly wired socket outlet could place
hazardous voltages on accessible metal parts.

AT-GS924GB Gigabit Ethernet Switch Installation Guide



12 PLUGGABLE EQUIPMENT, the socket outlet shall be installed near the equipment and

shall be easily accessible.



13 CAUTION: Air vents must not be blocked and must have free access to the room

ambient air for cooling.



14 OPERATING TEMPERATURE: This product is designed for a maximum ambient

temperature of 40° degrees C.



15 ALL COUNTRIES: Install product in accordance with local and National Electrical

Codes.

Normen: Dieses Produkt erfüllt die Anforderungen der nachfolgenden Normen.



1 Hochfrequenzstörung FCC Klasse A, EN55022 Klasse A, VCCI

Class A, C-TICK, EN61000-3-2,
EN61000-3-3



2 WARNUNG: Bei Verwendung zu Hause kann dieses Produkt Funkstörungen

hervorrufen. In diesem Fall müßte der Anwender angemessene Gegenmaßnahmen
ergreifen.



3 Störsicherheit EN55024



4 Elektrische Sicherheit UL 1950 (UL/cUL), EN60950 (TUV)



5 Laser EN60825

SICHERHEIT



6 WARNUNG Laserprodukt der Klasse 1.



7 WARNUNG Nicht direkt in den Strahl blicken.



8 ACHTUNG: GEFÄHRLICHE SPANNUNG

Das Gehäuse nicht öffnen. Das Gerät enthält keine vom Benutzer wartbaren Teile.
Das Gerät steht unter Hochspannung und darf nur von qualifiziertem technischem
Personal geöffnet werden. Vor Anschluß der LAN-Kabel, Gerät vom Netz trennen.



9 GEFAHR DURCH BLITZSCHLAG

GEFAHR: Keine Arbeiten am Gerät oder an den Kabeln während eines Gewitters
ausführen.



10 VORSICHT: DAS NETZKABEL DIENT ZUM TRENNEN DER STROMVERSORGUNG. ZUR

TRENNUNG VOM NETZ, KABEL AUS DER STECKDOSE ZIEHEN.



11 GERÄTE DER KLASSE 1

DIESE GERÄTE MÜSSEN GEERDET SEIN. Der Netzstecker darf nur mit einer
vorschriftsmäßig geerdeten Steckdose verbunden werden. Ein unvorschriftsmäßiger
Anschluß kann die Metallteile des Gehauses unter gefährliche elektrische
Spannungen setzen.



12 STECKBARES GERÄT: Die Anschlußbuchse sollte in der Nähe der Einrichtung

angebracht werden und leicht zugänglich sein."



13 VORSICHT

Die Entlüftungsöffnungen dürfen nicht versperrt sein und müssen zum Kühlen freien
Zugang zur Raumluft haben.



14 BETRIEBSTEMPERATUR: Dieses Produkt wurde für den Betrieb in einer

Umgebungstemperatur von nicht mehr als 40° C entworfen.

39

Translated Electrical Safety and Emission Information



15 ALLE LÄNDER: Installation muß örtlichen und nationalen elektrischen Vorschriften



1 Radiofrekvens forstyrrelsesemission FCC Klasse A, EN55022 Klasse A, VCCI



2 ADVARSEL: I et hjemligt miljø kunne dette produkt forårsage radio forstyrrelse.



3 Immunitet EN55024



4 Elektrisk sikkerhed UL 1950 (UL/cUL), EN60950 (TUV)



5 Laser EN60825



6 ADVARSEL Laserprodukt av klasse 1.



7 ADVARSEL Stirr ikke på strålen.



8 ELEKTRISKE FORHOLDSREGLER

entsprechen.

Standarder: Dette produkt tilfredsstiller de følgende standarder.

Class A, C-TICK, EN61000-3-2,
EN61000-3-3

Bliver det tilfældet, påkræves brugeren muligvis at tage tilstrækkelige
foranstaltninger.

SIKKERHED

ADVARSEL: RISIKO FOR ELEKTRISK STØD

For at forebygge ELEKTRISK stød, undlad at åbne apparatet. Der er ingen indre dele,
der kan repareres af brugeren. Denne enhed indeholder LIVSFARLIGE
STRØMSPÆNDINGER og bør kun åbnes af en uddannet og kvalificeret tekniker. For
at undgå risiko for ELEKTRISK STØD, afbrydes den elektriske strøm til produktet, før
LAN-kablerne monteres eller afmonteres.



9 FARE UNDER UVEJR

FARE: UNDLAD at arbejde på udstyr eller KABLER i perioder med LYNAKTIVITET.



10 ADVARSEL: DEN STRØMFØRENDE LEDNING BRUGES TIL AT AFBRYDE STRØMMEN.

SKAL STRØMMEN TIL APPARATET AFBRYDES, tages ledningen ud af stikket.



11 ELEKTRISK - KLASSE 1-UDSTYR

DETTE UDSTYR KRÆVER JORDFORBINDELSE. Stikket skal være forbundet med en
korrekt installeret jordforbunden stikkontakt. En ukorrekt installeret stikkontakt kan
sætte livsfarlig spænding til tilgængelige metaldele.



12 UDSTYR TIL STIKKONTAKT, stikkontakten bør installeres nær ved udstyret og skal

være lettilgængelig.



13 ADVARSEL: Ventilationsåbninger må ikke blokeres og skal have fri adgang til den

omgivende luft i rummet for afkøling.



14 BETJENINGSTEMPERATUR: Dette apparat er konstrueret til en omgivende

temperatur på maksimum 40 grader C.



15 ALLE LANDE: Installation af produktet skal ske i overensstemmelse med lokal og

national lovgivning for elektriske installationer.

40

AT-GS924GB Gigabit Ethernet Switch Installation Guide

Eisen: Dit product voldoet aan de volgende eisen.



1 RFI Emissie FCC Klasse A, EN55022 Klasse A, VCCI

Class A, C-TICK, EN61000-3-2,
EN61000-3-3



2 WAARSCHUWING: Binnenshuis kan dit product radiostoring veroorzaken, in welk

geval de gebruiker verplicht kan worden om gepaste maatregelen te nemen.



3 Immuniteit EN55024



4 Electrische Veiligheid UL 1950 (UL/cUL), EN60950 (TUV)



5 Laser EN60825

VEILIGHEID



6 WAARSHUWING Klasse-1 laser produkt.



7 WAARCHUWING Neit in de straal staren.



8 WAARSCHUWINGEN MET BETREKKING TOT ELEKTRICITEIT

WAARSCHUWING: GEVAAR VOOR ELEKTRISCHE SCHOKKEN
Verwijder het deksel niet, teneinde ELEKTRISCHE schokken te voorkomen. Binnenin
bevinden zich geen onderdelen die door de gebruiker onderhouden kunnen
worden. Dit toestel staat onder GEVAARLIJKE SPANNING en mag alleen worden
geopend door een daartoe opgeleide en bevoegde technicus. Om het gevaar op
ELEKTRISCHE SCHOKKEN te vermijden, moet u het toestel van de stroombron
ontkoppelen alvorens de LAN-kabels te koppelen of ontkoppelen.



9 GEVAAR VOOR BLIKSEMINSLAG

GEVAAR: NIET aan toestellen of KABELS WERKEN bij BLIKSEM.



10 WAARSCHUWING: HET TOESTEL WORDT UITGESCHAKELD DOOR DE

STROOMKABEL TE ONTKOPPELEN.OM HET TOESTEL STROOMLOOS TE MAKEN: de
stroomkabel ontkoppelen.



11 ELEKTRISCHE TOESTELLEN VAN KLASSE 1

DIT TOESTEL MOET GEAARD WORDEN. De stekker moet aangesloten zijn op een juist
geaarde contactdoos. Een onjuist geaarde contactdoos kan de metalen onderdelen
waarmee de gebruiker eventueel in aanraking komt onder gevaarlijke spanning
stellen.



12 AAN TE SLUITEN APPARATUUR, de contactdoos wordt in de nabijheid van de

apparatuur geïnstalleerd en is gemakkelijk te bereiken."



13 OPGELET: De ventilatiegaten mogen niet worden gesperd en moeten de

omgevingslucht ongehinderd toelaten voor afkoeling.



14 BEDRIJFSTEMPERATUUR: De omgevingstemperatuur voor dit produkt mag niet

meer bedragen dan 40 graden Celsius.



15 ALLE LANDEN: het toestel installeren overeenkomstig de lokale en nationale

elektrische voorschriften.

41

Translated Electrical Safety and Emission Information



1 Emission d’interférences radioélectriques FCC Classe A, EN55022 Classe A, VCCI



2 MISE EN GARDE : dans un environnement domestique, ce produit peut provoquer



3 Immunité EN55024



4 Sécurité électrique UL 1950 (UL/cUL), EN60950 (TUV)



5 Laser EN60825



6 ATTENTION Producit laser di classe 1.



7 ATTENTION Ne pas fixer le faisceau des yeux.



8 INFORMATION SUR LES RISQUES ÉLECTRIQUES

Normes: ce produit est conforme aux normes de suivantes:

Class A, C-TICK, EN61000-3-2,
EN61000-3-3

des interférences radioélectriques. Auquel cas, l’utilisateur devra prendre les
mesures adéquates.

SÉCURITÉ

AVERTISSEMENT: DANGER D’ÉLECTROCUTION

Pour éviter toute ÉLECTROCUTION, ne pas ôter le revêtement protecteur du matériel.
Ce matériel ne contient aucun élément réparable par l’utilisateur. Il comprend des
TENSIONS DANGEREUSES et ne doit être ouvert que par un technicien dûment
qualifié. Pour éviter tout risque d’ÉLECTROCUTION, débrancher le matériel avant de
connecter ou de déconnecter les câbles LAN.



9 DANGER DE FOUDRE

DANGER: NE PAS MANIER le matériel ou les CÂBLES lors d’activité orageuse.



10 ATTENTION: LE CORDON D’ALIMENTATION SERT DE MISE HORS CIRCUIT. POUR

COUPER L’ALIMENTATION DU MATÉRIEL, débrancher le cordon.



11 ÉQUIPEMENT DE CLASSE 1 ÉLECTRIQUE

CE MATÉRIEL DOIT ÊTRE MIS A LA TERRE. La prise de courant doit être branchée dans
une prise femelle correctement mise à la terre car des tensions dangereuses
risqueraient d’atteindre les pièces métalliques accessibles à l’utilisateur.



12 EQUIPEMENT POUR BRANCHEMENT ELECTRIQUE, la prise de sortie doit être placée

près de l’équipement et facilement accessible".



13 ATTENTION: Ne pas bloquer les fentes d’aération, ceci empêcherait l’air ambiant de

circuler librement pour le refroidissement.



14 TEMPÉRATURE DE FONCTIONNEMENT: Ce matériel est capable de tolérer une

température ambiante maximum de ou 40 degrés Celsius.



15 POUR TOUS PAYS: Installer le matériel conformément aux normes électriques

nationales et locales.

42

AT-GS924GB Gigabit Ethernet Switch Installation Guide

Standardit: Tämä tuote on seuraavien standardien mukainen.



1 Radioaaltojen häirintä FCC Luokka A, EN55022 Luokka A,

VCCI Class A, C-TICK, EN61000-3-2,
EN61000-3-3



2 VAROITUS: Kotiolosuhteissa tämä laite voi aiheuttaa radioaaltojen häiröitä, missä

tapauksessa laitteen käyttäjän on mahdollisesti ryhdyttävä tarpeellisiin
toimenpiteisiin.



3 Kestävyys EN55024



4 Sähköturvallisuus UL 1950 (UL/cUL), EN60950 (TUV)



5 Laser EN60825

TURVALLISUUS



6 VAROITUS Luokan 1 Lasertuote.



7 VARIOTUS Älä katso säteeseen.



8 SÄHKÖÖN LIITTYVIÄ HUOMAUTUKSIA

VAROITUS: SÄHKÖISKUVAARA
Estääksesi SÄHKÖISKUN älä poista kantta. Sisällä ei ole käyttäjän huollettavissa olevia
osia. Tämä laite sisältää VAARALLISIA JÄNNITTEITÄ ja sen voi avata vain koulutettu ja
pätevä teknikko. Välttääksesi SÄHKÖISKUN mahdollisuuden katkaise sähkövirta
tuotteeseen ennen kuin liität tai irrotat paikallisverkon (LAN) kaapelit.



9 SALAMANISKUVAARA

HENGENVAARA: ÄLÄ TYÖSKENTELE laitteiden tai KAAPELEIDEN KANSSA
SALAMOINNIN AIKANA.



10 HUOMAUTUS: VIRTAJOHTOA KÄYTETÄÄN VIRRANKATKAISULAITTEENA. VIRTA

KATKAISTAAN irrottamalla virtajohto.



11 SÄHKÖ - TYYPPILUOKAN 1 LAITTEET

TÄMÄ LAITE TÄYTYY MAADOITTAA. Pistoke täytyy liittää kunnollisesti
maadoitettuun pistorasiaan. Virheellisesti johdotettu pistorasia voi altistaa
metalliosat vaarallisille jännitteille.



12 PISTORASIAAN KYTKETTÄVÄ LAITE; pistorasia on asennettava laitteen lähelle ja

siihen on oltava esteetön pääsy."



13 HUOMAUTUS: Ilmavaihtoreikiä ei pidä tukkia ja niillä täytyy olla vapaa yhteys

ympäröivään huoneilmaan, jotta ilmanvaihto tapahtuisi.



14 KÄYTTÖLÄMPÖTILA: Tämä tuote on suunniteltu ympäröivän ilman

maksimilämpötilalle 40°C.



15 KAIKKI MAAT: Asenna tuote paikallisten ja kansallisten

sähköturvallisuusmääräysten mukaisesti.

43

Translated Electrical Safety and Emission Information



1 Emissione RFI (interferenza di radiofrequenza) FCC Classe A, EN55022 Classe A,



2 AVVERTENZA: in ambiente domestico questo prodotto potrebbe causare radio



3 Immunità EN55024



4 Sicurezza elettrica UL 1950 (UL/cUL), EN60950 (TUV)



5 Laser EN60825



6 AVVERTENZA Prodotto laser di Classe 1.



7 AVERTENZA Non fissare il raggio con gli occhi.



8 AVVERTENZE ELETTRICHE

Standard: Questo prodotto è conforme ai seguenti standard.

VCCI Class A, C-TICK, EN61000-3­2, EN61000-3-3

interferenza. In questo caso potrebbe richiedersi all’utente di prendere gli adeguati
provvedimenti.

NORME DI SICUREZZA

ATTENZIONE: PERICOLO DI SCOSSE ELETTRICHE

Per evitare SCOSSE ELETTRICHE non asportare il coperchio. Le componenti interne
non sono riparabili dall’utente. Questa unità ha TENSIONI PERICOLOSE e va aperta
solamente da un tecnico specializzato e qualificato. Per evitare ogni possibilità di
SCOSSE ELETTRICHE, interrompere l’alimentazione del dispositivo prima di collegare
o staccare i cavi LAN.



9 PERICOLO DI FULMINI

PERICOLO: NON LAVORARE sul dispositivo o sui CAVI durante PRECIPITAZIONI
TEMPORALESCHE.



10 ATTENZIONE: IL CAVO DI ALIMENTAZIONE È USATO COME DISPOSITIVO DI

DISATTIVAZIONE. PER TOGLIERE LA CORRENTE AL DISPOSITIVO staccare il cavo di
alimentazione.



11 ELETTRICITÀ - DISPOSITIVI DI CLASSE 1

QUESTO DISPOSITIVO DEVE AVERE LA MESSA A TERRA. La spina deve essere inserita
in una presa di corrente specificamente dotata di messa a terra. Una presa non
cablata in maniera corretta rischia di scaricare una tensione pericolosa su parti
metalliche accessibili.



12 APPARECCHIATURA COLLEGABILE, la presa va installata vicino all’apparecchio per

risultare facilmente accessibile".



13 ATTENZIONE: le prese d’aria non vanno ostruite e devono consentire il libero

ricircolo dell’aria ambiente per il raffreddamento.



14 TEMPERATURA DI FUNZIONAMENTO: Questo prodotto è concepito per una

temperatura ambientale massima di 40 gradi centigradi.



15 TUTTI I PAESI: installare il prodotto in conformità delle vigenti normative elettriche

nazionali.

44

AT-GS924GB Gigabit Ethernet Switch Installation Guide

Sikkerhetsnormer: Dette produktet tilfredsstiller følgende sikkerhetsnormer.



1 RFI stråling FCC Klasse A, EN55022 Klasse A, VCCI

Class A, C-TICK, EN61000-3-2,
EN61000-3-3



2 ADVARSEL: Hvis dette produktet benyttes til privat bruk, kan produktet forårsake

radioforstyrrelse. Hvis dette skjer, må brukeren ta de nødvendige forholdsregler.



3 Immunitet EN55024



4 Elektrisk sikkerhet UL 1950 (UL/cUL), EN60950 (TUV)



5 Laser EN60825

SIKKERHET



6 ADVARSEL Laserprodukt av klasse 1.



7 ADVARSAL Stirr ikke på strålen.



8 ELEKTRISITET

ADVARSEL: FARE FOR ELEKTRISK SJOKK
For å unngå ELEKTRISK sjokk, må dekslet ikke tas av. Det finnes ingen deler som
brukeren kan reparere på innsiden. Denne enheten inneholder FARLIGE
SPENNINGER, og må kun åpnes av en faglig kvalifisert tekniker. For å unngå
ELEKTRISK SJOKK må den elektriske strømmen til produktet være avslått før LAN­kablene til- eller frakobles.



9 FARE FOR LYNNEDSLAG

FARE: ARBEID IKKE på utstyr eller KABLER i TORDENVÆR.



10 FORSIKTIG: STRØMLEDNINGEN BRUKES TIL Å FRAKOBLE UTSTYRET. FOR Å

DEAKTIVISERE UTSTYRET, må strømforsyningen kobles fra.



11 ELEKTRISK - TYPE 1- KLASSE UTSTYR

DETTE UTSTYRET MÅ JORDES. Strømkontakten må være tilkoplet en korrekt jordet
kontakt. En kontakt som ikke er korrekt jordet kan føre til farlig spenninger i lett t
ilgjengelige metalldeler.



12 UTSTYR FOR STIKKONTAKT. Stikkontakten skal monteres i nærheten av utstyret og

skal være lett tilgjengelig."



13 FORSIKTIG: Lufteventilene må ikke blokkeres, og må ha fri tilgang til luft med

romtemperatur for avkjøling.



14 DRIFTSTEMPERATUR: Dette produktet er konstruert for bruk i maksimum

romtemperatur på 40 grader celsius.



15 ALLE LAND: Produktet må installeres i samsvar med de lokale og nasjonale

elektriske koder.

45

Translated Electrical Safety and Emission Information



1 Emissão de interferência de radiofrequência FCC Classe A, EN55022 Classe A,



2 AVISO: Num ambiente doméstico este produto pode causar interferência na



3 Imunidade EN55024



4 Segurança Eléctrica UL 1950 (UL/cUL), EN60950 (TUV)



5 Laser EN60825



6 AVISO Produto laser de classe 1



7 AVISO Não olhe fixamente para o raio.



8 AVISOS SOBRE CARACTERÍSTICAS ELÉTRICAS

Padrões: Este produto atende aos seguintes padrões.

VCCI Class A, C-TICK, EN61000-3­2, EN61000-3-3

radiorrecepção e, neste caso, pode ser necessário que o utente tome as medidas
adequadas.

SEGURANÇA

ATENÇÃO: PERIGO DE CHOQUE ELÉTRICO

Para evitar CHOQUE ELÉTRICO, não retire a tampa. Não contém peças que possam
ser consertadas pelo usuário. Este aparelho contém VOLTAGENS PERIGOSAS e só
deve ser aberto por um técnico qualificado e treinado. Para evitar a possibilidade de
CHOQUE ELÉTRICO, desconecte o aparelho da fonte de energia elétrica antes de
conectar e desconectar os cabos da LAN.



9 PERIGO DE CHOQUE CAUSADO POR RAIO

PERIGO: NÃO TRABALHE no equipamento ou nos CABOS durante períodos
suscetíveis a QUEDAS DE RAIO.



10 CUIDADO: O CABO DE ALIMENTAÇÃO É UTILIZADO COMO UM DISPOSITIVO DE

DESCONEXÃO. PARA DESELETRIFICAR O EQUIPAMENTO, desconecte o cabo de
ALIMENTAÇÃO.



11 ELÉTRICO - EQUIPAMENTOS DO TIPO CLASSE 1

DEVE SER FEITA LIGAÇÃO DE FIO TERRA PARA ESTE EQUIPAMENTO. O plugue de
alimentação deve ser conectado a uma tomada com adequada ligação de fio terra.
Tomadas sem adequada ligação de fio terra podem transmitir voltagens perigosas a
peças metálicas expostas.



12 EQUIPAMENTO DE LIGAÇÃO, a tomada eléctrica deve estar instalada perto do

equipamento e ser de fácil acesso."



13 CUIDADO: As aberturas de ventilação não devem ser bloqueadas e devem ter

acesso livre ao ar ambiente para arrefecimento adequado do aparelho.



14 TEMPERATURA DE FUNCIONAMENTO: Este produto foi projetado para uma

temperatura ambiente máxima de 40 graus centígrados.



15 TODOS OS PAÍSES: Instale o produto de acordo com as normas nacionais e locais

para instalações elétricas.

46

AT-GS924GB Gigabit Ethernet Switch Installation Guide

Estándares: Este producto cumple con los siguientes estándares.



1 Emisión RFI FCC Clase A, EN55022 Clase A, VCCI

Class A, C-TICK, EN61000-3-2,
EN61000-3-3



2 ADVERTENCIA: en un entorno doméstico, este producto puede causar

radiointerferencias, en cuyo caso, puede requerirse del usuario que tome las
medidas que sean convenientes al respecto.



3 Inmunidad EN55024



4 Seguridad eléctrica UL 1950 (UL/cUL), EN60950 (TUV)



5 Laser EN60825

SEGURIDAD



6 ¡ADVERTENCIA! Producto láser Clase 1.



7 ¡ADVERTENCIA! No mirat fijamente el haz.



8 AVISOS ELECTRICOS

ADVERTENCIA: PELIGRO DE ELECTROCHOQUE
Para evitar un ELECTROCHOQUE, no quite la tapa. No hay ningún componente en el
interior al cual puede prestar servicio el usuario. Esta unidad contiene VOLTAJES
PELIGROSOS y sólo deberá abrirla un técnico entrenado y calificado. Para evitar la
posibilidad de ELECTROCHOQUE desconecte la corriente eléctrica que llega al
producto antes de conectar o desconectar los cables LAN.



9 PELIGRO DE RAYOS

PELIGRO: NO REALICE NINGUN TIPO DE TRABAJO O CONEXION en los equipos o en
LOS CABLES durante TORMENTAS ELECTRICAS.



10 ATENCION: EL CABLE DE ALIMENTACION SE USA COMO UN

DISPOSITIVO DE DESCONEXION. PARA DESACTIVAR EL EQUIPO, desconecte el cable
de alimentación.



11 ELECTRICO - EQUIPO DEL TIPO CLASE 1

ESTE EQUIPO TIENE QUE TENER CONEXION A TIERRA. El cable tiene que conectarse a
un enchufe a tierra debidamente instalado. Un enchufe que no está correctamente
instalado podría ocasionar tensiones peligrosas en las partes metálicas que están
expuestas.



12 EQUIPO CONECTABLE, el tomacorriente se debe instalar cerca del equipo, en un

lugar con acceso fácil".



13 ATENCION: Las aberturas para ventilación no deberán bloquearse y deberán tener

acceso libre al aire ambiental de la sala para su enfriamiento.



14 TEMPERATURA REQUERIDA PARA LA OPERACIÓN: Este producto está diseñado

para una temperatura ambiental máxima de 40 grados C.



15 PARA TODOS LOS PAÍSES: Monte el producto de acuerdo con los Códigos

Eléctricos locales y nacionales.

47

Translated Electrical Safety and Emission Information



1 Radiostörning FCC Klass A, EN55022 Klass A, VCCI



2 VARNING: Denna produkt kan ge upphov till radiostörningar i hemmet, vilket kan



3 Immunitet EN55024



4 Elsäkerhet UL 1950 (UL/cUL), EN60950 (TUV)



5 Laser EN60825



6 VARNING! Laserprodukt av klass 1.



7 VARNING! Laserstrålning när enheten är öppen.



8 TILLKÄNNAGIVANDEN BETRÄFFANDE ELEKTRICITETSRISK:

Standarder: Denna produkt uppfyller följande standarder.

Class A, C-TICK, EN61000-3-2,
EN61000-3-3

tvinga användaren till att vidtaga erforderliga åtgärder.

SÄKERHET

RISK FÖR ELEKTRISK STÖTFör att undvika ELEKTRISK stöt, ta ej av locket. Det finns
inga delar inuti som behöver underhållas. Denna apparat är under HÖGSPÄNNING
och får endast öppnas av en utbildad kvalificerad tekniker. För att undvika
ELEKTRISK STÖT, koppla ifrån produktens strömanslutning innan LAN-kablarna
ansluts eller kopplas ur.



9 FARA FÖR BLIXTNEDSLAG

FARA: ARBETA EJ på utrustningen eller kablarna vid ÅSKVÄDER.



10 VARNING: NÄTKABELN ANVÄNDS SOM STRÖMBRYTARE FÖR ATT KOPPLA FRÅN

STRÖMMEN, dra ur nätkabeln.



11 ELEKTRISKT - TYP KLASS 1 UTRUSTNING

DENNA UTRUSTNING MÅSTE VARA JORDAD. Nätkabeln måste vara ansluten till ett
ordentligt jordat uttag. Ett felaktigt uttag kan göra att närliggande metalldelar
utsätts för högspänning. Apparaten skall anslutas till jordat uttag, när den ansluts till
ett nätverk.



12 UTRUSTNING MED PLUGG. Uttaget skall installeras i utrustningens närhet och vara

lättåtkomligt".



13 VARNING: Luftventilerna får ej blockeras och måste ha fri tillgång till omgivande

rumsluft för avsvalning.



14 DRIFTSTEMPERATUR: Denna produkt är konstruerad för rumstemperatur ej

överstigande 40 grader Celsius.



15 ALLA LÄNDER: Installera produkten i enlighet med lokala och statliga bestämmelser

för elektrisk utrustning.

48