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DWL-120
Wireless USB Adapter
User's Manual

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   Summary of Contents for D-Link DWL-120

  • Page 1

    DWL-120 Wireless USB Adapter User's Manual...

  • Page 2: Table Of Contents

    Table of Contents for the DWL-120 Wireless USB Adapter Introduction Contents of Package Wireless Basics Getting Started Configuration Utility Troubleshooting Networking Basics Technical Support Specifications Warranty Registration...

  • Page 3: Introduction

    - 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...

  • Page 4: Contents Of Package

    CONTENTS OF PACKAGE DWL-120 Wireless USB Adapter Package Contents DWL-120 Wireless USB Adapter with cable Driver CD User’s Manual Quick Install Guide...

  • Page 5: Wireless Basics

    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.

  • Page 6

    WIRELESS BASICS 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.

  • Page 7: Getting Started

    GETTING STARTED To begin, you must select the type of wireless network you will be building and follow the relevant instructions. Which statement below 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...

  • Page 8

    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.

  • Page 9

    GETTING STARTED (LAN The Home Internet Network with Multiple IPs 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 that I have purchased from my Internet Service Provider or I want to connect to an Ethernet network that uses Static IP addresses"...

  • Page 10

    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.

  • Page 11

    GETTING STARTED The Ad Hoc Network "I have 2 or more computers and/or laptops and just want to share files and printers." When you have installed your wireless network it will look like this: To complete this installation, please follow these steps: 1.

  • Page 12

    GETTING STARTED The Ad Hoc Network with Internet Sharing "I have 2 or more computers and/or laptops and want to share files, printers, and Internet access using one computer or laptop as an Internet Server" (requires Internet sharing software). When you have installed your wireless network it will look like this: To share an Internet connection with Internet Sharing software you will need to purchase Internet Sharing software or use...

  • Page 13

    GETTING STARTED If the Internet Sharing Software will be installed on the same computer into which you are installing this wireless network adapter follow these steps: 1. Install the wireless adapter - see the Quick Install Guides. 2. Set Static IP Address for the wireless adapter - see Networking Basics section.

  • Page 14: Configuration Utility

    Sometimes the icon will be red which happens when the wireless adapter is set to a different channel or the communication mode is set incorrectly. Verify the settings for the D-Link Air product and check that computer is within wireless range.

  • Page 15

    “Start” its own Ad Hoc network. Displays the MAC address of the D-Link adapter product. SSID (Service Set Identification) Displays the current SSID setting of the D-Link Air adapter product. Channel and Tx Rate Shows the selected channel and transmit rate that are currently used by the D-Link Air adapter for an active connection.

  • Page 16

    "Poor" "Fair" "Good" "Excellent" The D-Link Air adapter will start looking for a better Access Point if the Link Quality becomes "Poor." Link Quality is a measure of receive and transmit errors over the radio channel. CONFIGURATION TAB The Configuration Tab contains several fields where the operating parameters of the D-Link Air product can be viewed and changed.

  • Page 17

    Access Point. The SSID has the name “default” as the initial settings after the drivers are loaded. The D-Link Air product will be able to con- nect to an Access Point with the same ESS ID.

  • Page 18

    CONFIGURATION UTILITY Network Mode The field allows selection from a list of supported Network "Modes." The supported modes displayed are the following: "Ad Hoc," and "Infrastructure." The default setting for the "Network Mode" is "Infrastructure." 1. Ad Hoc - This is the 802.11b peer-to-peer mode of operation. In "Ad Hoc"...

  • Page 19

    CONFIGURATION UTILITY 2. Infrastructure - This mode of operation requires the presence of an 802.11b Access Point. All communication is done through the Access Point which relays packets to other wireless clients as well as to nodes on a wired Ethernet network. Preamble The field allows two different selections: Long and Short.

  • Page 20

    CONFIGURATION UTILITY ENCRYPTION TAB Figure 3 - Configuration Utility with opened "Encryption" tab If an additional measure of security is desired on the wireless net- work, WEP (Wired Equivalent Privacy) encryption can be enabled. WEP encrypts each frame transmitted from the wireless adapter using one of the keys entered in the “WEP Key Entry”...

  • Page 21

    A-F are valid entries. The Configuration Utility will not apply keys that are not entered correctly. Wep Key to Use None - The default setting for the D-Link Air product. Set encryption to “None” when encryption is not necessary. Key 1 - Key 4 These four fields are used to manually enter the encryption keys.

  • Page 22

    Open System The default selection is set to “Open System” as the authentication algorithm used by D-Link Air product. If the Access Point is using “Open System” authentication, then the wireless adapter will need to be set to the same authentication type.

  • Page 23: About Tab

    CONFIGURATION UTILITY ABOUT TAB About tab shows the product versions of the Driver and Configuration Utility. Figure 4 - Configuration Utility with opened “ABOUT” tab...

  • Page 24: Troubleshooting

    TROUBLESHOOTING A network can be simple to install and maintain. However, occasionally something might go wrong. The best approach to troubleshooting network problems is to start at the very simplest level and work your way up. On the following pages we have covered many of the com mon troubleshooting situations.

  • Page 25

    The DWL-120 PC Wireless USB Adapter has an indicator labeled “LINK” on the top panel. A flashing green “LINK” light indicates that the Network Adapter is sending or receiving data.

  • Page 26

    TROUBLESHOOTING VERIFYING DRIVER INSTALLATION To check that the wireless network adapter drivers are loaded properly: Go to: Start>Settings>Control Panel...

  • Page 27

    TROUBLESHOOTING Double click on “System”.

  • Page 28

    TROUBLESHOOTING Click on the “Device Manager” Tab Click on the + symbol in front of “Network Adapters” Highlight “D-Link DWL-120 wireless USB adapter” Click on “Properties”...

  • Page 29

    TROUBLESHOOTING Check under “Device Status” to see if the DWL-120 is working properly.

  • Page 30

    TROUBLESHOOTING CHECKING THE WIRELESS ADAPTER CONFIGURATION Go to: START>Programs>D-Link DWL-120 11Mbps WLAN>DWL-120 wireless Configuration...

  • Page 31

    TROUBLESHOOTING CHECKING THE WIRELESS ADAPTER CONFIGURATION cont. Select the “Configuration” Tab. Check that the Network mode is set properly to “Infrastructure” mode when there is an Access Point in the network. Otherwise, the mode should be set to “Ad Hoc.” To change any settings, check the box labeled “Change Configuration,”...

  • Page 32

    B. Check that the “IP Address,” assigned to the Access Point is within the range assigned by the DHCP server. When using D-Link routers, the DHCP server will assign an IP range of 192.168.0.2 - 192.168.0.254 C. Check that the “Network ID” matches the SSID name of the wireless adapter.

  • Page 33

    TROUBLESHOOTING CHECKING THE USB CONTROLLER To check that the socket controller is working properly: Right click on "My Computer" icon on the desktop. Select "Properties."...

  • Page 34

    TROUBLESHOOTING Select the "Device Manager" tab. Figure 8 - USB Universal Host Controller A. Click on the (+) symbol next to "Universal Serial Bus controllers." B. Highlight the USB Universal Host Controller. C. Click "Properties."...

  • Page 35

    TROUBLESHOOTING Figure 9 - USB Host Controller Device status D. In the General tab, check under "Device status" to check that the USB Host controller is working properly.

  • Page 36

    TROUBLESHOOTING CHECKING RESOURCES FOR A USB CONTROLLER Select the "Resources" tab. Figure 10 - Resources settings E. Check that there are no conflicts under the "Conflicting device list." F. If there is an existing IRQ conflict, please refer to the “How to Free an IRQ”...

  • Page 37

    TROUBLESHOOTING HOW TO FREE AN IRQ What to do if you don’t have an available IRQ If there is not an available (open) IRQs on your system, you can do the following. The first thing you can do is let your Motherboard and Windows do the work for you.

  • Page 38

    TROUBLESHOOTING HOW TO FREE AN IRQ What to do if you don’t have an available IRQ continued 5. The next setting below should be “Reset Configuration” or “Reset ESSCD.” Set this to “Enabled.” Note: This is a one-time setting. Meaning after you reboot your computer the setting will return to “Disabled.”...

  • Page 39

    TROUBLESHOOTING HOW TO FREE AN IRQ If you do not have a Plug and Play Motherboard or you still do not have a free IRQ If you do not have a Plug and Play Motherboard or you still do not have a free IRQ you might need to disable some unused Hardware.

  • Page 40

    TROUBLESHOOTING HOW TO FREE AN IRQ If you do not have a Plug and Play Motherboard or you still do not have a free IRQ continued Other hardware that can be disabled Other hardware that can be disabled on your system might be what are referred to as “Built On.”...

  • Page 41

    TROUBLESHOOTING HOW TO FREE AN IRQ If you do not have a Plug and Play Motherboard or you still do not have a free IRQ continued 7. Change the setting for “Reset Configuration” to “Enabled.” 8. Hit the “ESC” key and go to the heading “Save and Exit.”...

  • Page 42: Networking Basics

    D-Link is one of the largest manufacturers of Ethernet products in the world. D-Link’s technological expertise and dedication to providing quality products at a low price makes D-Link a good place to watch for the newest in networking innovations. Or, you may want to get the newest drivers available for your...

  • Page 43

    NETWORKING BASICS Computer Identification If you had previously given your Windows 98/ME computers names, you may need to verify that each computer has a unique name and common workgroup name. A. On your Desktop, right-click the icon "Network Places" and select "Properties" from the context menu. B.

  • Page 44

    NETWORKING BASICS Computer Identification C. Type a unique, identifying name for this particular computer in the "Computer name:" box. This will be the name that other computers on your network will use to communicate with this computer. Each computer’s name must be unique on a particular network or confusion will result.

  • Page 45

    NETWORKING BASICS Sharing Files With your computers connected together on a network, you may now open and save files on another computer. You will be able to specify particular folders or disk drives to "share" and even password protect them. The steps below will enable you to share specific files and folders with other computers on your network.

  • Page 46

    NETWORKING BASICS Sharing Files D. Click to place a check mark next to "I want to be able to give others access to my files." E. Click "OK" on the "File and Print Sharing" dialog box. F. Click "OK" on the "Network" dialog box. G.If prompted, provide the Windows 98 installation CD or direct Windows to the proper location of the installation files.

  • Page 47

    NETWORKING BASICS Sharing Files H. You will now be able to identify a particular folder or disk drive to share. You may want to share a folder that both you and a colleague/family member needs to access occasionally. Or, maybe you want to share a CD-ROM drive so your other computer that does not have one can read CD’s.

  • Page 48

    NETWORKING BASICS Sharing Files K. Select "Share As:" to set the parameters for sharing this particular disk drive or folder. L. The "Share Name:" box is used to identify the disk drive or folder you are sharing to other computers on the network. You can give it any name you wish.

  • Page 49

    NETWORKING BASICS Sharing Files O. "Passwords:" allow you to apply a level of security to your shared disk drives and folders. Another computer (user) will be required to enter the password you designate here before accessing the disk drive or folder. Two passwords are used to give two levels of security (or access) to others on the network using the "Depends on Password"...

  • Page 50

    NETWORKING BASICS Sharing Files Q. You may now access this disk drive or folder from another computer on your network. Do so by double-clicking the "My Network Places" icon on your desktop or inside Windows Explorer. R. Navigate to the computer with the shared disk drive or folder (recognized by the "Computer Name"...

  • Page 51

    NETWORKING BASICS Sharing Printers "Sharing" a printer connected to one computer with other computers on you network can be very convenient - allowing you to print from any computer on the network. The steps below will enable you to print with other computers on your network.

  • Page 52

    NETWORKING BASICS Sharing Printers B. Click the "File and Print Sharing·" button. C. Click to place a check mark next to "I want to be able to allow others to print to my printer(s)." D. Click "OK" on the "File and Print Sharing" dialog box. E.

  • Page 53

    NETWORKING BASICS Sharing Printers G. You may now share any installed printers connected to this computer with other computers on your network. From the “Start,” select “Settings,” then select "Printers." Right click on the printer that you want to share with others on the network, and select "Sharing."...

  • Page 54

    If you find this inconvenient, devices known as Network Print Servers are available from D-Link including the DP-301 and DP-101P. A Network Print Server would allow you to directly connect your printer to...

  • Page 55

    NETWORKING BASICS How to Install TCP/IP By default, Windows 98/ME will install TCP/IP automatically. Go to START > Settings > Control Panel Double click on “Network.”...

  • Page 56

    NETWORKING BASICS How to Install TCP/IP Select the “D-Link DWL-120 Wireless USB Adapter” Click on “Add.” Select “Protocol.” Click “Add.”...

  • Page 57

    NETWORKING BASICS How to Install TCP/IP Select “Microsoft” Scroll down and Select “TCP/IP” Click “Ok” Now the “TCP/IP for D-Link DWL-650 Wireless Adapter” will be available. The TCP/IP Installation is now complete.

  • Page 58

    NETWORKING BASICS Configuring a Dynamic IP Address When the drivers are installed, the default setting is set to obtain IP dynamically through a DHCP server. If you need to check or change the settings, then do the following: Go to START > Settings > Control Panel Double Click on “Network”...

  • Page 59

    NETWORKING BASICS Configuring a Dynamic IP Address Highlight TCP/IP for the DWL-120 Click on “Properties.” NOTE: If TCP/IP is not present see Section 1: “How to Install TCP/IP.”...

  • Page 60

    NETWORKING BASICS Configuring a Dynamic IP Address When the TCP/IP window opens, choose “IP Address” tab. Select “Obtain an IP Address Automatically.” Click “OK.” When the network properties window comes back up, click “OK.” Windows will ask you to reboot and click “Yes.”...

  • Page 61

    NETWORKING BASICS Configuring a Static IP Address Go to START > Settings > Control Panel Double Click on “Network”...

  • Page 62

    NETWORKING BASICS Configuring a Static IP Address Highlight TCP/IP for the DWL-120. Scroll down if you cannot see it. Click on “Properties” NOTE: If TCP/IP is not present see Section 1: “How to Install TCP/IP.”...

  • Page 63

    NETWORKING BASICS Configuring a Static IP Address When the “TCP/IP Properties” window opens, choose “IP Address” tab. Select “Specify an IP address.” Enter an IP address into the empty field. Suggested IP Range 192.168.0.2 to 192.168.0.254 NOTE: IP Addresses must be signed sequentially to each computer.

  • Page 64

    NETWORKING BASICS Checking TCP/IP Address of the Wireless Adapter Click on the Start button and click "Run." Figure 11 - Start > Run...

  • Page 65

    NETWORKING BASICS Checking TCP/IP Address of the Wireless Adapter Type "winipcfg" in the "Open" box. Click "OK". The IP Configuration screen will be displayed. The IP address will be displayed in the IP Address box. USB 11Mbps Wireless Network...

  • Page 66

    NETWORKING BASICS Checking TCP/IP Address of the Wireless Adapter Click on "More Info" to display additional IP information. USB 11Mbps Wireless Network...

  • Page 67

    NETWORKING BASICS Checking the Connection by Pinging Click on the Start button and click "Run." Type "command" in the "Open" box. Click "OK" to get to a DOS prompt.

  • Page 68

    NETWORKING BASICS Checking the Connection by Pinging Type "ping 192.168.0.1", which is the IP address of the Gateway in this case, and hit the "Enter" key. A successful ping will show four replies...

  • Page 69: Technical Support

    CONTACTING TECHNICAL SUPPORT D-Link provides free technical support. North American customers can contact D-Link technical support through our web site, e-mail, or by phone. North American technical support is available Monday through Friday from 6:00 a.m. to 6:00 p.m. (PST).

  • Page 70: Specifications

    TECHNICAL SPECIFICATIONS Product Name:D-Link DWL-120 Model: DWL-120 Standards: IEEE 802.11b All major networking standards (including IP, IPX) Adapter Type: USB 1.1 Transport Protocols: TCP/IP IPX/SPX NetBEUI TCP/IP Protocols: BOOTP SNMP Telnet DHCP System Requirements: IBM compatible with·Pentium 100 or faster processor.

  • Page 71

    TECHNICAL SPECIFICATIONS cont. Utility Software: Configuration Utility Key Management: Automatic Dynamic Key Allocation (ADKA) through public key Range: Indoor - per cell approximately 35 to 100 meters Outdoor - per cell approximately 100 to 300 meters Diagnostic LED: Power, Network Link, Activity Power Specifications: Operating Voltage: +5V, DC (+/-) 5% Transmit Power:...

  • Page 72

    Physical Dimensions: L = 110 mm W = 72 mm H = 20 mm Emissions: VCCI Temperature: Operating Temperature: -10°C to 55°C Storage Temperature: -20°C to 75°C Humidity: Maximum up to 95% Non-condensing Safety: Warranty: One year limited warranty...

  • Page 73

    Copyright ©2000 D-Link, all rights reserved. D-Link, DWL-120, DWL-1000AP, DWL-500, and DWL-650 are registered trademarks of D-Link. Microsoft Windows 98, Windows ME, Windows 2000, and Windows NT are trademarks of the Microsoft Corporation. All other trademarks are registered trademarks or trademarks of their respective hold-...

  • Page 74: Warranty

    LIMITED WARRANTY D-Link Systems, Inc. ("D-Link") provides this limited warranty for its product only to the person or entity who originally purchased the product from D-Link or its authorized reseller or distributor. Limited Hardware Warranty: D-Link warrants that the hardware portion of the D-Link products described below ("Hardware") will be free from...

  • Page 75

    Software is delivered. If a material non-conformance is incapable of correction, or if D-Link determines in its sole discretion that it is not practical to replace the non-conforming Software, the price paid by the original licensee for the non-conform- ing Software will be refunded by D-Link;...

  • Page 76

    WITH ANY PRODUCT RETURNED TO D-LINK FOR WARRANTY SERVICE) RESULTING FROM THE USE OF THE PRODUCT, RELATING TO WARRANTY SERVICE, OR ARISING OUT OF ANY BREACH OF THIS LIMITED WARRANTY, EVEN IF D-LINK HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE SOLE REMEDY FOR A BREACH OF THE FOREGOING LIMITED WARRANTY IS REPAIR, REPLACEMENT OR REFUND OF THE DEFECTIVE OR NON-CONFORMING PRODUCT.

  • Page 77

    Trademarks Copyright ©1999 D-Link Corporation. Contents subject to change without prior notice. D- Link is a registered trademark of D-Link Corporation/D-Link Systems, Inc. All other trade- marks belong to their respective proprietors. Copyright Statement No part of this publication may be reproduced in any form or by any means or used to make any derivative such as translation, transformation, or adaptation without permission from D- Link Corporation/D-Link Systems Inc., as stipulated by the United States Copyright Act of...

  • Page 78

    and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

  • Page 79: Registration

    8. What category best describes your company? oAerospace oEngineering oEducation o Finance oHospital oLegal oInsurance/Real Estate o Manufacturing oTransportation/Utilities/Communication oVARoRetail/Chainstore/Wholesale oGovernmento System house/company oOther________________________________ 9. Would you recommend your D-Link product to a friend? oYes o No o Don't know yet 10.Your comments ?

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