D-LinkAirPlus DWL-120+ 2.4GHz Wireless USB Adapter Manual Building Networks for People Contents
Package Contents ................................................................................3
Wireless Basics ....................................................................................6
Getting Started ......................................................................................9
Using the Configuration Utility ..............................................................12
Networking Basics ..............................................................................18
Technical Specifications ......................................................................34
Contacting Technical Support ..............................................................35
Warranty and Registration ...................................................................36
2 Package Contents Contents of Package: D-Link AirPlus DWL-120+ 2.4 GHz Wireless USB Adapter Manual on CD-ROM Quick Installation Guide USB Cable If any of the above items are missing, please contact your reseller. System Requirements:
A computer or laptop with an available USB port
At least 32 MB of memory and a 300 MHz processor
Properly installed and working USB Controller
The D-Link AirPlus DWL-120+ 2.4GHz Wireless USB Adapter is a convenient Plug & Play USB 1.1 solution that brings wireless networking to your laptop or desktop PC. It provides up to 256-bit level of WEP security to your wireless data transfers.
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, printers, and Internet connection and enjoy the freedom that wireless networking delivers.
The 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 Router) or Infrastructure mode (with an Access Point or Router). The IEEE 802.11b Ethernet standard allows you to connect computers and 802.11b compatible devices at speeds up to 22Mbps*, dependent upon the distance between wireless adapters, the configuration of your working environment, or the capabilities or limitations of your computer systems.
* This is the theoretical maximum of the chipset used in the DWL-120+ USB Adapter.
Actual through-put may vary.
4 Features and Benefits
Convenience of Plug & Play installation
Fully 802.11b compatible
USB 1.1 standard
Stronger Network Security with 256-bit WEP encryption
Supports infrastructure networks via an Access Point or Router and Peer-to-Peer communication in Ad-Hoc mode
User-friendly configuration and diagnostic utilities
Connects at up to 328 feet indoors*
Three year warranty (USA only)
** * Environmental factors may adversely affect range
5 Features Link/Activity LED Power - Indicates that the
DWL-120+ is properly Antenna
installed in the computer.
Used to wirelessly Link - Blinks when data is
connect to 802.11b
being transmitted through
the wireless connection. Mini-USB port
Used to connect the
DWL-120+ to your
computer Wireless Basics
D-Linkwireless 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. D-Link wireless products will allow you
access to the data you want, when and where you want it. You will be able to
enjoy the freedom that wireless networking brings.
A WLAN is a cellular computer network that transmits and receives data with
radio signals instead of wires. WLANs are used increasingly in both home and
office environments, and public areas such as airports, coffee shops and
universities. Innovative ways to utilize WLAN technology are helping people to
work and communicate more efficiently. Increased mobility and the absence of
cabling and other fixed infrastructure have proven to be beneficial for many
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.
6 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 â€“ WLANs are easy to set up, manage, change and relocate. Networks that frequently change can benefit from WLANs ease
of implementation. WLANs can operate in locations where installation of wiring
may be impractical. Installation and Network Expansion - Installing a WLAN system can be fast and easy and can eliminate the need to pull cable through walls and ceilings.
Wireless technology allows the network to go where wires cannot go - even
outside the home or office. Scalability â€“ WLANs can be configured in a variety of topologies to meet the needs of specific applications and installations. 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. Inexpensive Solution - Wireless network devices are as competitively priced as conventional Ethernet network devices. 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 22Mbps when used with other D-Link AirPlus devices.
7 Wireless Basics (continued) Installation Considerations The D-Link AirPlus DWL-120+ lets you access your network, using a wireless connection, from virtually anywhere within its operating range. 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 wireless productâ€™s range from 3-90 feet (1-30 meters.) Position your 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! Position devices so that the signal will travel straight through a wall or ceiling (instead of at an angle) for better reception.
4. Building Materials can impede the wireless signal - 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 extreme RF noise.
8 Getting Started With its default settings, the DWL-120+ will connect with other D-Link AirPlus products, right out of the box.
There are basically two modes of networking: Infrastructure â€“ using an Access Point or Router, such as the DI-614+. Ad-Hoc â€“ 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 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):
A wireless broadband Router- D-Link AirPlus DI-614+
A laptop computer with a USB wireless network adapter - D-Link AirPlus DWL-120+
A desktop computer with a USB wireless network adapter - D-Link AirPlus DWL-120+
A Cable modem - D-Link DCM-201
Getting Started Setting up a Wireless Infrastructure Network
5 For a typical wireless setup at home (as shown above), please do the following:
You will need broadband Internet access (a Cable or DSL-subscriber line into your home or office)
Consult with your Cable or DSL provider for proper installation of the modem
Connect the Cable or DSL modem to your broadband router (see the Quick Installation Guide included with your router.)
Install the D-Link AirPlus DWL-120 wireless USB adapter into an available USB
port on your desktop computer. (See the Quick Installation Guide included with the DWL-120+.)
If you are connecting a laptop computer to your network, you can install the
DWL-120+ into an available USB port on your laptop. (See the Quick Installa- tion Guide included with the DWL-120+.)
Getting Started Setting up a Wireless Ad Hoc Network
Install the D-Link AirPlus DWL-120+ Wireless USB adapter into the desktop computer. (See the Quick Installation Guide included with the product for installation instructions.)
Install another DWL-120+ into the laptop computer. Or you may install another wireless adapter such as the D-Link AirPlus DWL-650+ wireless cardbus adapter. (See the Quick Installation Guide included with the product for installation instructions.)
Set the wireless configuration for the adapters to Ad-Hoc mode, set the adapters to the same channel, and assign an IP Address to each computer on the Ad-Hoc network. (See Box below) IP Address
When assigning IP Addresses to the computers on the network, please remember that the IP Address for each computer must be in the same IP Address range as all the computers in the network, and the subnet mask must be exactly the same for all the computers in the network.
For example: If the first computer is assigned an IP Address of 192.168.0.2 with a Subnet Mask of 255.255.255.0, then the second computer can be assigned an IP Address of 192.168.0.3 with a Subnet Mask of 255.255.255.0, etc. IMPORTANT: If computers or other devices are assigned the same IP Address, one or more of the devices may not be visible on the network.
Using the Configuration Utility D-Link AirPlus DWL-120+ uses the Configuration Utility as the management software. The utility provides the user an easy interface to change any settings related to the wireless adapter. When the computer is started, the Configuration Utility starts automatically and the system tray icon is loaded in the toolbar (see illustration below.) Clicking on the utility icon will start the Configuration Utility. Another way to start the Configuration Utility is to click on Start>Programs>D-Link DWL-120+.
If you are using Windows XP, you can use either the Zero Configuration Utility or the D-Link Configuration Utility. To use the D-Link Configuration Utility with XP, click on the Zero Configuration Utility in the taskbar in the lower corner of your computer screen and uncheck the box in the properties window that enables windows configuration. After you have done this, you can then use the D-Link Configuration Utility with XP.
A new icon will appear in your Icon tray. Double- click on the icon shown at right. The screen below will be displayed with the following default settings: Link Info Status: Displays the current
connection state of the DWL-120+.
Auto SSID: The Service Set Identifier is
the name assigned to the
wireless network. The
factory SSID setting is set to default. Tx Rate: The default setting is Auto; Tx Rate settings are automatically determined for optimal speed up to a maximum speed of 22Mbps. Channel: The default setting is 6. Link Quality: Displays the wireless signal strength for the DWL-120+ wireless connection to the access point. Data Rate: Displays the statistics of the data that is transmitted and received.
12 Using the Configuration Utility Configuration
Auto SSID: The Service Set Identifier is the name assigned to the wireless network. The
factory SSID setting is set to default. Make changes here to match the SSID
on the existing Wireless Router or Access Point. Wireless Mode: Infrastructure is the factory default setting. Ad-Hoc mode is used for peer-
to-peer networking. See the Getting Started section in this manual for ex- amples of these network types. Channel: The default channel setting is channel 6. In Infrastructure mode, the
DWL-120+ will automatically select the channel to match the channel setting
for the selected Access Point. In Ad Hoc mode, the channel must be manually set to the same channel for each wireless adapter. Tx Rate: You can adjust the transmission rate to get the best signal possible depend-
ing on your usage and your environment. The Tx Rate will be determined
automatically by signal strength. Default is set to Auto. Preamble: Select Long or Short Preamble. The Preamble defines the length of the
CRC block (Cyclic Redundancy Check is a common technique for detecting
data transmission errors) for communication between the Access Point and
the roaming wireless Network adapters. Long Preamble is the default setting.
High network traffic areas should use the Short Preamble. Power Mode: Select from three modes: Continuous Access Mode - this default setting consumes the most power Maximum Power Save - this setting consumes the least power Power Save - this setting consumes a moderate amount of power
Click Apply to save changes.
13 Using the Configuration Utility Encryption Data Encryption: Enable encryption by clicking in the box. Data encryption is de-selected as the
default setting. Authorization Mode: Open Authentication - communicates the key across the network Shared Authentication - allows communication only with other devices
with identical WEP settings Auto - will automatically adjust to the Authentication mode of the wireless
Access Point or Router Default Key: Enter a key in either ASCII (e.g., a word) or hexadecimal format. Select one of
the 4 keys that you have created to be the default key. Key Length: select the key length, either 64, 128 or 256 bits Key Format: ASCII (e.g., a word) or Hexadecimal format Hexadecimal digits consist of the numbers 0-9 and the letters A-F ASCII (American Standard Code for Information Interchange)is a code for representing English letters as numbers from 0-127
Click Apply if you have made any changes
14 Using the Configuration Utility Site Survey Available Networks: The top section of the window displays the Available Networks. Scroll up
and down the list and highlight the network to which you wish to connect.
Click on the Connect button. Profiles: In the lower half of the screen, you can manage the profiles that you have
created for the wireless network at home, at the office and in public places.
Scroll up and down and highlight the profile that you wish to configure. You
can ADD or REMOVE a profile, or configure the Properties of the profile in
order to connect with an available network. Properties: Click on Properties and the screen on the next page will appear.
15 Using the Configuration Utility (continued) Properties
Current Setting/Default Setting
In this window you can configure all the properties of a profile in order to
connect with a network of your choice.
Click OK to save the changes.
16 Using the Configuration Utility About
The About tab displays the utility and the firmware versions.
17 Networking Basics Using the Network Setup Wizard in Windows XP
In this section you will learn how to establish a network at home or work, using Microsoft Windows XP. Note: Please refer to websites such as http://www.homenethelp.com and http://www.microsoft.com/windows2000 for information about networking computers using Windows 2000, ME or 98SE.
Go to Start>Control Panel>Network Connections Select Set up a home or small office network
When this screen appears, Click Next.
Please follow all the instructions in this window:
In the following window, select the best description of your computer. If your computer connects to the internet through a gateway/router, select the second option as shown.
Enter a Computer description and a Computer name (optional.)
Enter a Workgroup name. All computers on your network should havethe same Workgroup name.
Please wait while the Network Setup Wizard applies the changes.
When the changes are complete, click Next.
Please wait while the Network Setup Wizard configures the computer. This may take a few minutes.
In the window below, select the option that fits your needs. In this example, Create a Network Setup Disk has been selected. You will run this disk on each of the computers on your network. Click Next.
Insert a disk into the Floppy Disk Drive, in this case drive A.
Please read the information under Hereâ€™s how in the screen below. After you com-
plete the Network Setup Wizard you will use the Network Setup Disk to run the Network Setup Wizard once on each of the computers on your network. To continue click Next.
23 Networking Basics Please read the information on this screen, then click Finish to complete the Network Setup Wizard.
The new settings will take effect when you restart the computer. Click Yes to restart the computer.
You have completed configuring this computer. Next, you will need to run the Network Setup Disk on all the other computers on your network. After run- ning the Network Setup Disk on all your computers, your new wireless net- work will be ready to use.