D-Link Air DWL-120 Manuel utilisateur

Manual

(09/27/2002)

Building Networks for People

Air DWL-120

D-LINK

2.4GHz Wireless USB Adapter

Contents

Package Contents ................................................................................3

Introduction ..........................................................................................4

Wireless Basics ....................................................................................6

Getting Started ...................................................................................10

Using the Configuration Utility ............................................................13

Networking Basics ..............................................................................19

Troubleshooting..................................................................................32

Technical Specifications .....................................................................35

Contacting Technical Support.............................................................36

Warranty and Registration ..................................................................37

Contents of Package:

D-Link Air DWL-120

2.4 GHz Wireless USB Adapter

Manual, Warranty and Drivers on CD

Quick Installation Guide

Package Contents

If any of the above items are missing, please contact your reseller.

System Requirements:



Windows XP, Windows 2000, Windows Me, or Windows 98SE



A computer with an available USB port



At least 32 MB of memory and a 300 MHz processor



An 802.11b Access Point or Router (e.g., DWL-900AP for

Infrastructure Mode) or another 802.11b wireless adapter

(e.g., DWL-650 for Ad-Hoc mode.)

Introduction

The D-Link Air DWL-120 2.4GHz Wireless USB Adapter is an ideal way to

extend the reach and number of computers connected to your wireless network.

After completing the steps outlined in the Quick Installation Guide (included in

your package) you will have the ability to share information and resources,

such as files and printers, and take full advantage of a “connected” environment

for work or play!

This DWL-120 comes with software drivers for the most popular Microsoft

Windows operating systems and can be integrated into a larger network, running

Windows XP, Windows 2000, Windows ME, or Windows 98SE in either Ad

Hoc mode (without an Access Point) or Infrastructure mode (with an Access

Point.) The IEEE 802.11b standards compliance means this adapter gives

you the flexibility to connect it to any 802.11b network. The IEEE 802.11b

Ethernet standard allows you to connect computers and devices at speeds up

to 11Mbps, dependent upon the distance between wireless adapters, the

configuration of your working environment, or the capabilities or limitations of

your computer systems.

This manual provides a quick introduction to wireless technology and its

application as it relates to networking. Take a moment to read through this

manual and familiarize yourself with wireless technology. You should also give

yourself some time to become familiar with your new wireless network.

Features and Benefits

Supports wireless data encryption with 64-bit WEP and 128-bit

WEP for more secure networking

User-friendly configuration and diagnostic utilities

Supports infrastructure networks via an Access Point and peer-to-

peer communication in ad-hoc mode

Operates in the 2.4 to 2.4835 GHz Direct Sequence Spread Spectrum

Provides high-speed wireless connection at up to 11Mbps

Cost-effective wireless solution

IEEE 802.11b and Wi-Fi Certified

Connects at up to 328 feet indoors*



Easy installation

* Environmental factors may adversely affect range

One year warranty



WHQL Certification for Windows XP



D-Link wireless products are based on industry standards to provide easy-to-

use and compatible high-speed wireless connectivity within your home, business

or public access wireless networks. Strictly adhering to the IEEE standard, the

D-Link wireless family of products will allow you to securely access the data

you want, when and where you want it. You will be able to enjoy the freedom

that wireless networking delivers.

A wireless local area network (WLAN) is a cellular computer network that

transmits and receives data with radio signals instead of wires. Wireless LANs

are used increasingly in both home and office environments, and public areas

such as airports, coffee shops and universities. Innovative ways

Wireless Basics

more efficiently. Increased mobility and the absence of cabling and other fixed

infrastructure have proven to be beneficial for many users.

Wireless users can use the same applications they use on a wired network.

Wireless adapter cards used on laptop and desktop systems support the same

protocols as Ethernet adapter cards.

Under many circumstances, it may be desirable for mobile network devices to

link to a conventional Ethernet LAN in order to use servers, printers or an

Internet connection supplied through the wired LAN. A Wireless Router is a

device used to provide this link.

to utilize WLAN technology are helping people to work and communicate

Features Link/Activity LED

Link - Indicates that the

DWL-120 is properly

installed in the computer.

Activity - Blinks when data

is being transmitted

through the wireless

connection.

Antenna

Used to wirelessly

connect to 802.11b

networks

Mini-USB port

Used to connect the

DWL-120 to your

computer

Wireless Basics (continued)

People use wireless LAN technology for many different purposes:

Mobility - Productivity increases when people have access to data in any

location within the operating range of the WLAN. Management decisions based

on real-time information can significantly improve worker efficiency.

Low Implementation Costs –WLANs (Wireless Local Area Networks) are

easy to set up, manage, change and relocate. Networks that frequently change,

both physically and logically, can benefit from WLANs ease of implementation.

WLANs can operate in locations where installation of wiring may be impractical.

Installation Speed and Simplicity - Installing a wireless LAN system can

be fast and easy and can eliminate the need to pull cable through walls and

ceilings.

Network Expansion - Wireless technology allows the network to go

where wires cannot.

Scalability – Wireless Local Area Networks (WLANs) can be configured in a

variety of topologies to meet the needs of specific applications or existing

infrastructures. Configurations are easily changed and range from peer-to-

peer networks suitable for a small number of users to larger infrastructure

networks to accommodate hundreds or thousands of users, depending on the

number of wireless devices deployed.

The DWL-120 is compatible with the D-Link Air 802.11b family of products

which include:

2.4GHz Wireless Cardbus Adapters used with laptop

computers (DWL-650)

2.4GHz Wireless PCI cards used with desktop computers

(DWL-520)

Wireless Access Points (DWL-900AP)

Standards-Based Technology

Based on the IEEE 802.11b standard, the DWL-120 is interoperable with

existing compatible 2.4GHz wireless technology with data transfer speeds of

up to 11Mbps.

Wireless Basics (continued)

Installation Considerations

The D-Link Air DWL-120 lets you access your network, using a wireless

connection, from virtually anywhere. Keep in mind, however, that the number,

thickness and location of walls, ceilings, or other objects that the wireless signals

must pass through, may limit the range. Typical ranges vary depending on the

types of materials and background RF (radio frequency) noise in your home or

business. The key to maximizing wireless range is to follow these basic

guidelines:

1. Keep the antenna of the DWL-120 in an upright position.

2. Keep the number of walls and ceilings between the DWL-120 and

other network devices to a minimum - each wall or ceiling can reduce

your D-Link Air Wireless product’s range from 3-90 feet (1-30 meters.)

Position your receiving devices so that the number of walls or ceilings is

minimized.

3. Be aware of the direct line between network devices. A wall that is

1.5 feet thick (.5 meters), at a 45-degree angle appears to be almost 3

feet (1 meter) thick. At a 2-degree angle it looks over 42 feet (14 meters)

thick! Try to make sure that devices are positioned so that the signal will

travel straight through a wall or ceiling for better reception.

4. Building Materials make a difference - a solid metal door or aluminum

studs may have a negative effect on range. Try to position wireless

devices and computers with wireless adapters so that the signal passes

through drywall or open doorways and not other materials.

5. Keep your product away (at least 3-6 feet or 1-2 meters) from electrical

devices or appliances that generate RF noise.

Getting Started

With its default settings, the DWL-120 will connect with other

D-Link Air products, right out of the box.

A wireless Router - D-Link AirPro DI-764

A laptop computer with a wireless adapter -

D-Link AirPlus DWL-650+

A desktop computer with another D-Link Air DWL-120

A Cable modem - D-Link DCM-200

There are basically two modes of networking:

Infrastructure – using an Access Point, such as the DWL-900AP+.

Ad-Hoc – directly connecting to another computer, for peer-to-peer

communication, using wireless network adapters on each computer, such

as two or more DWL-120 wireless network USB adapters.

On the following pages we will show you an example of an Infrastructure

Network and an Ad-Hoc Network.

An Infrastructure network contains an Access Point or Router. The

Infrastructure Network example shown on the following page contains the

following D-Link network devices (your existing network may be comprised

of other devices):

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