D-Link Air DWL-120 User manual

DWL-120

Wireless USB Adapter

User's Manual

Table of Contents for the DWL-120

Wireless USB Adapter

Introduction i

Contents of Package ii

Wireless Basics 1

Getting Started 3

Configuration Utility 10

Troubleshooting 20

Networking Basics 38

Technical Support 65

Specifications 66

Warranty 70

Registration 75

INTRODUCTION

The D-Link DWL-120 802.11b Wireless USB Adapter is an

ideal way to connect your laptop computer to a wireless network

or as part of a wired LAN (Local Area Network) with a wireless

network segment. After completing the steps outlined in this

manual, 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 and play!

This DWL-120 comes with drivers for the most popular operating

systems and can be integrated into a large network. The

User’s Manual is designed to help you connect your

computer to a network when running Windows 98, Windows

ME, or Windows 2000 in either Ad Hoc mode (without an

Access Point) or Infrastructure mode (with an Access Point).

Yet the IEEE802.11b standards compliance means this adapter

gives you the flexibility to connect it to any 802.11b networks.

The IEEE 802.11bEthernet standard allows you to connect

computers and devices at speeds up to 11Mbps, depending on

the distance between wireless adapters.

This manual provides a quick introduction to wireless

technology and its application as it relates to networking.

Take a moment to readthrough this manual and familiarize

yourself with wireless technology. But you should also give

yourself some time to play with your new wireless network.

CONTENTS OF PACKAGE

DWL-120 Wireless USB Adapter Package Contents

ADWL-120 Wireless USB Adapter with cable

BDriver CD

CUser’s Manual

DQuick Install Guide

WIRELESS BASICS

Your new D-Link Air product is based on industry standards to pro-

vide easy to use and compatible high speed wireless connectivity

within your home or business. Strictly adhering to IEEE 802.11b,

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

you want, when and where you want it. No longer will you be teth-

ered to a workstation or forced to run new wiring. You will be able

to enjoy the freedom that wireless networking delivers.

Standards Based Technology

Based on IEEE 802.11b, D-Link Air products can perform up to 11

Megabits per second. This means you will be able to transfer

large files quickly or even watch a Movie in MPEG format over

your network without noticeable delays. This technology works by

using multiple frequencies in the 2.4GHz range utilizing Direct

Sequence Spread Spectrum (DSSS) technology. D-Link Air prod-

ucts will automatically sense the best possible connection speed to

ensure the greatest speed and range possible with the technology.

Installation Considerations

Designed to go up to 100 meters indoors and up to 300 meters

outdoors, D-Link Air lets you access your network from anywhere

you want. However, keep in mind, that range is limited by the

number of walls, ceilings, or other objects that the wireless signals

must pass through. Typical ranges vary depending on the types of

materials and background RF noise in your home or business.

The key to maximizing range is to follow these basic principles:

WIRELESS BASICS

1. Keep the number of walls and ceilings to a minimum -

Each wall or ceiling can rob your D-Link Air Wireless

product from 1-30M of range. Position your Access

Points, Residential Gateways, and computers so that

the number of walls or ceilings is minimized.

2. Be aware of the direct line between Access Points,

Residential Gateways, and Computers -

A wall that is .5 meters thick, at a 45 degree angle

appears to be almost 1 meter thick. At a 2 degree

angle it looks over 14 meters thick! Try to make sure

that the AP and Adapters are positioned so that the

signal will travel straight through a wall or ceiling for

better reception.

3. Building Materials make a difference -

A solid metal door or aluminum studs may have a neg-

ative effect on range. Again, try to position Access

Points, Residential Gateways, and Computers so that

the signal passes through drywall or open doorways

and not other materials.

4. Make sure that the antenna is positioned for best reception

by using the software signal strength tools

included with your product.

5. Keep your product away (at least 1-2 meters) from electrical devices

that generate RF noise, like microwaves, Monitors,

electric motors, etc.

For the average American 4-bedroom home, range should not be a

problem. If you experience low or no signal strength in areas of

your home that you wish to access, consider positioning the

Access Point in a location directly between the Residential

Gateways and/or Computers that will be connected. Additional

Access Points can be connected to provide better coverage in

rooms where the signal does not appear as strong as desired.

GETTING STARTED

To begin, you must select the type of wireless network you will

be building and follow the relevant instructions.

Which statementbelow best describes the type of network you

want to build?

The Home Internet Network with A Residential

Gateway, Firewall, or Router(LAN administrators

with Dynamic IPs should follow these instructions)

"I have 2 or more computers and/or laptops and want to share

files, printers, and Internet access using a Residential

Gateway, Router, or Firewall or I want to connect to an

Ethernet network that uses Dynamic (DHCP) IP addresses"

(requires a Wireless Router or Access Point and Ethernet capable

Gateway, Router, or Firewall or an existing Ethernet network).

When you have installed your wireless network it will look

like this:

GETTING STARTED

Please note that this type of installation requires that your

Residential Gateway, Router, Firewall or Network Administrator

can give you a dynamic IP address for each computer. Please

consult the documentation that comes with your Access Point to

determine its necessary configuration.

To complete this installation, please follow these steps:

1.Using the provided Ethernet cable, connect the router to the

Cable/DSLmodem. Also connect the Access Point to the Router.

2. Install the Wireless Adapter - see the Quick Install Guides.

3. Check the wireless connection- see Configuration Utility and

Networking Basics section.

4. Check IP Address for the wireless adapter - see Networking Basics

section.

NOTE: The default settings for the wireless adapter is set to obtain a

Dynamic IP Address.

5. Learn to share printers and files - see Networking Basics section.

GETTING STARTED

The Home Internet Network with Multiple IPs (LAN

administrators with Static IPs should follow

these instructions).

"I have 2 or more computers and/or laptops and want to share

files, printers, and Internet access using multiple IP addresses

thatI have purchased from my Internet Service Provider or I

want to connect to an Ethernet network that uses Static IP

addresses" (requires Access Point, Ethernet capable

Broadband modem, and multiple IP address Internet Account

or an existing Ethernet network).

When you have installed your wireless network it will look

like this:

GETTING STARTED

Please note that this type of installation requires that your ISP

or Network Administrator can give you a static IP address for

each computer. Please consult the documentation that comes

with your Access Point to determine its necessary configuration.

To complete this installation, please follow these steps:

1.Using the provided Ethernet cable, connect the router to the

Cable/DSLmodem. Also connect the Access Point to the Router.

2. Install the wireless Adapter - see the Quick Install Guides.

3. Check the wireless connection- see Configuration Utility and

Networking Basics section.

4. Set Static IP Address for the wireless Adapter - see Networking

Basics section.

NOTE: If you are using a PPPoE client, go to “Networking Basics

section” instead. Verify the settings with your ISP or Network

Administrator if necessary.

5. Learn to share printers and files - see Networking Basics.

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