D Link 2001120011-1 Wireless LAN CardBus PC Card User Manual 2nd Revised UsersGuide
D Link Corporation Wireless LAN CardBus PC Card 2nd Revised UsersGuide
  
    D Link   >  
Revision 3 of Users Manual

 i
DW-690 & DWL-A650 
5GHz Wireless Cardbus Card 
User’s Manual 
First Edition (December, 2001) 
6DWLA650..01 
Wichtige Sicherheitshinweise 
1.  Bitte lesen Sie sich diese Hinweise sorgfältig durch. 
2.  Heben Sie diese Anleitung für den spätern Gebrauch auf. 
3.  Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen.  Vervenden Sie keine Flüssig- oder 
Aerosolreiniger.  Am besten dient ein angefeuchtetes Tuch zur Reinigung. 
4.  Um eine Beschädigung des Gerätes zu vermeiden sollten Sie nur Zubehörteile verwenden, die vom Hersteller 
zugelassen sind. 
5.  Das Gerät is vor Feuchtigkeit zu schützen. 
6.  Bei der Aufstellung des Gerätes ist auf sichern Stand zu achten.  Ein Kippen oder Fallen könnte Verletzungen 
hervorrufen. Verwenden Sie nur sichere Standorte und beachten Sie die Aufstellhinweise des Herstellers. 
7.  Die Belüftungsöffnungen dienen zur Luftzirkulation die das Gerät vor Überhitzung schützt.  Sorgen Sie dafür, 
daß diese Öffnungen nicht abgedeckt werden. 
8.  Beachten Sie beim Anschluß an das Stromnetz die Anschlußwerte. 
9.  Die Netzanschlußsteckdose muß aus Gründen der elektrischen Sicherheit einen Schutzleiterkontakt haben. 
10. Verlegen Sie die Netzanschlußleitung so, daß niemand darüber fallen kann.  Es sollete auch nichts auf der 
Leitung abgestellt werden. 
11. Alle Hinweise und Warnungen die sich am Geräten befinden sind zu beachten. 
12. Wird das Gerät über einen längeren Zeitraum nicht benutzt, sollten Sie es vom Stromnetz trennen.   Somit 
wird im Falle einer Überspannung eine Beschädigung vermieden. 
13. Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten in das Gerät gelangen.  Dies 
könnte einen Brand bzw. Elektrischen Schlag auslösen. 
14. Öffnen Sie niemals das Gerät.  Das Gerät darf aus Gründen der elektrischen Sicherheit nur von authorisiertem 
Servicepersonal geöffnet werden. 
15. Wenn folgende Situationen auftreten ist das Gerät vom Stromnetz zu trennen und von einer qualifizierten 
Servicestelle zu überprüfen: 
a – Netzkabel oder Netzstecker sint beschädigt. 
b – Flüssigkeit ist in das Gerät eingedrungen. 
c – Das Gerät war Feuchtigkeit ausgesetzt. 
d – Wenn das Gerät nicht der Bedienungsanleitung ensprechend funktioniert oder Sie mit Hilfe dieser Anleitung 
keine Verbesserung erzielen. 
e – Das Gerät ist gefallen und/oder das Gehäuse ist beschädigt. 
f –  Wenn das Gerät deutliche Anzeichen eines Defektes aufweist. 
16. Bei Reparaturen dürfen nur Orginalersatzteile bzw. den Orginalteilen entsprechende Teile verwendet werden.  
Der Einsatz von ungeeigneten Ersatzteilen kann eine weitere Beschädigung hervorrufen. 

 iii
17. Wenden Sie sich mit allen Fragen die Service und Repartur betreffen an Ihren Servicepartner.  Somit stellen 
Sie die Betriebssicherheit des Gerätes sicher. 
18. Zum Netzanschluß dieses Gerätes ist eine geprüfte Leitung zu verwenden, Für einen Nennstrom bis 6A und 
einem Gerätegewicht großer 3kg ist eine Leitung nicht leichter als H05VV-F, 3G, 0.75mm2  einzusetzen 
Limited Warranty 
Hardware: 
D-LINK WARRANTS EACH OF ITS HARDWARE PRODUCTS TO BE FREE FROM DEFECTS IN WORKMANSHIP AND 
MATERIALS UNDER NORMAL USE AND SERVICE FOR A PERIOD COMMENCING ON THE DATE OF PURCHASE FROM 
D-LINK OR ITS AUTHORIZED RESELLER AND EXTENDING FOR THE LENGTH OF TIME STIPULATED BY THE 
AUTHORIZED RESELLER OR D-LINK BRANCH OFFICE NEAREST TO THE PLACE OF PURCHASE.  
THIS WARRANTY APPLIES ON THE CONDITION THAT THE PRODUCT REGISTRATION CARD IS FILLED OUT AND 
RETURNED TO A D-LINK OFFICE WITHIN NINETY (90) DAYS OF PURCHASE.  A LIST OF D-LINK OFFICES IS 
PROVIDED AT THE BACK OF THIS MANUAL, TOGETHER WITH A COPY OF THE REGISTRATION CARD. 
IF THE PRODUCT PROVES DEFECTIVE WITHIN THE APPLICABLE WARRANTY PERIOD, D-LINK WILL PROVIDE 
REPAIR OR REPLACEMENT OF THE PRODUCT.  D-LINK SHALL HAVE THE SOLE DISCRETION WHETHER TO REPAIR 
OR REPLACE, AND REPLACEMENT PRODUCT MAY BE NEW OR RECONDITIONED.  REPLACEMENT PRODUCT 
SHALL BE OF EQUIVALENT OR BETTER SPECIFICATIONS, RELATIVE TO THE DEFECTIVE PRODUCT, BUT NEED NOT 
BE IDENTICAL.  ANY PRODUCT OR PART REPAIRED BY D-LINK PURSUANT TO THIS WARRANTY SHALL HAVE A 
WARRANTY PERIOD OF NOT LESS THAN 90 DAYS, FROM DATE OF SUCH REPAIR, IRRESPECTIVE OF ANY EARLIER 
EXPIRATION OF ORIGINAL WARRANTY PERIOD.  WHEN D-LINK PROVIDES REPLACEMENT, THEN THE DEFECTIVE 
PRODUCT BECOMES THE PROPERTY OF D-LINK. 
WARRANTY SERVICE MAY BE OBTAINED BY CONTACTING A D-LINK OFFICE WITHIN THE APPLICABLE 
WARRANTY PERIOD, AND REQUESTING A RETURN MATERIAL AUTHORIZATION (RMA) NUMBER.  IF A 
REGISTRATION CARD FOR THE PRODUCT IN QUESTION HAS NOT BEEN RETURNED TO D-LINK , THEN A PROOF OF 
PURCHASE (SUCH AS A COPY OF THE DATED PURCHASE INVOICE) MUST BE PROVIDED.  IF PURCHASER’S 
CIRCUMSTANCES REQUIRE SPECIAL HANDLING OF WARRANTY CORRECTION, THEN AT THE TIME OF 
REQUESTING RMA NUMBER, PURCHASER MAY ALSO PROPOSE SPECIAL PROCEDURE AS MAY BE SUITABLE TO THE 
CASE. 
AFTER AN RMA NUMBER IS ISSUED, THE DEFECTIVE PRODUCT MUST BE PACKAGED SECURELY IN THE ORIGINAL 
OR OTHER SUITABLE SHIPPING PACKAGE TO ENSURE THAT IT WILL NOT BE DAMAGED IN TRANSIT, AND THE 
RMA NUMBER MUST BE PROMINENTLY MARKED ON THE OUTSIDE OF THE PACKAGE.  THE PACKAGE MUST BE 
MAILED OR OTHERWISE SHIPPED TO D-LINK WITH ALL COSTS OF MAILING/SHIPPING/INSURANCE PREPAID. D-
LINK SHALL NEVER BE RESPONSIBLE FOR ANY SOFTWARE, FIRMWARE, INFORMATION, OR MEMORY DATA OF 
PURCHASER CONTAINED IN, STORED ON, OR INTEGRATED WITH ANY PRODUCT RETURNED TO D-LINK 
PURSUANT TO THIS WARRANTY. 
ANY PACKAGE RETURNED TO D-LINK WITHOUT AN RMA NUMBER WILL BE REJECTED AND SHIPPED BACK TO 
PURCHASER AT PURCHASER’S EXPENSE, AND D-LINK RESERVES THE RIGHT IN SUCH A CASE TO LEVY A 
REASONABLE HANDLING CHARGE IN ADDITION MAILING OR SHIPPING COSTS. 
Software: 
WARRANTY SERVICE FOR SOFTWARE PRODUCTS MAY BE OBTAINED BY CONTACTING A D-LINK OFFICE WITHIN 
THE APPLICABLE WARRANTY PERIOD.  A LIST OF D-LINK OFFICES IS PROVIDED AT THE BACK OF THIS MANUAL, 
TOGETHER WITH A COPY OF THE REGISTRATION CARD.  IF A REGISTRATION CARD FOR THE PRODUCT IN 
QUESTION HAS NOT BEEN RETURNED TO A D-LINK OFFICE, THEN A PROOF OF PURCHASE (SUCH AS A COPY OF 
THE DATED PURCHASE INVOICE) MUST BE PROVIDED WHEN REQUESTING WARRANTY SERVICE.  THE TERM 
“PURCHASE” IN THIS SOFTWARE WARRANTY REFERS TO THE PURCHASE TRANSACTION AND RESULTING 
LICENSE TO USE SUCH SOFTWARE. 
D-LINK WARRANTS THAT ITS SOFTWARE PRODUCTS WILL PERFORM IN SUBSTANTIAL CONFORMANCE WITH THE 
APPLICABLE PRODUCT DOCUMENTATION PROVIDED BY D-LINK WITH SUCH SOFTWARE PRODUCT, FOR A PERIOD 
OF NINETY (90) DAYS FROM THE DATE OF PURCHASE FROM D-LINK OR ITS AUTHORIZED RESELLER.  D-LINK 
WARRANTS THE MAGNETIC MEDIA, ON WHICH D-LINK PROVIDES ITS SOFTWARE PRODUCT, AGAINST FAILURE 
DURING THE SAME WARRANTY PERIOD.  THIS WARRANTY APPLIES TO PURCHASED SOFTWARE, AND TO 
REPLACEMENT SOFTWARE PROVIDED BY D-LINK PURSUANT TO THIS WARRANTY, BUT SHALL NOT APPLY TO 
ANY UPDATE OR REPLACEMENT WHICH MAY BE PROVIDED FOR DOWNLOAD VIA THE INTERNET, OR TO ANY 
UPDATE WHICH MAY OTHERWISE BE PROVIDED FREE OF CHARGE. 
D-LINK SOLE OBLIGATION UNDER THIS SOFTWARE WARRANTY SHALL BE TO REPLACE ANY DEFECTIVE 
SOFTWARE PRODUCT WITH PRODUCT WHICH SUBSTANTIALLY CONFORMS TO D-LINK ’S APPLICABLE PRODUCT 
DOCUMENTATION.  PURCHASER ASSUMES RESPONSIBILITY FOR THE SELECTION OF APPROPRIATE APPLICATION 
AND SYSTEM/PLATFORM SOFTWARE AND ASSOCIATED REFERENCE MATERIALS.  D-LINK MAKES NO WARRANTY 
THAT ITS SOFTWARE PRODUCTS WILL WORK IN COMBINATION WITH ANY HARDWARE, OR ANY APPLICATION 
OR SYSTEM/PLATFORM SOFTWARE PRODUCT PROVIDED BY ANY THIRD PARTY, EXCEPTING ONLY SUCH 
PRODUCTS AS ARE EXPRESSLY REPRESENTED, IN D-LINK ’S APPLICABLE PRODUCT DOCUMENTATION AS BEING 
COMPATIBLE.  D-LINK ’S OBLIGATION UNDER THIS WARRANTY SHALL BE A REASONABLE EFFORT TO PROVIDE 
COMPATIBILITY, BUT D-LINK SHALL HAVE NO OBLIGATION TO PROVIDE COMPATIBILITY WHEN THERE IS FAULT 
IN THE THIRD-PARTY HARDWARE OR SOFTWARE.  D-LINK MAKES NO WARRANTY THAT OPERATION OF ITS 
SOFTWARE PRODUCTS WILL BE UNINTERRUPTED OR ABSOLUTELY ERROR-FREE, AND NO WARRANTY THAT ALL 
DEFECTS IN THE SOFTWARE PRODUCT, WITHIN OR WITHOUT THE SCOPE OF D-LINK ’S APPLICABLE PRODUCT 
DOCUMENTATION, WILL BE CORRECTED. 

 v
D-Link Offices for Registration and Warranty Service 
THE PRODUCT’S REGISTRATION CARD, PROVIDED AT THE BACK OF THIS MANUAL, MUST BE SENT TO A D-LINK OFFICE.  
TO OBTAIN AN RMA NUMBER FOR WARRANTY SERVICE AS TO A HARDWARE PRODUCT, OR TO OBTAIN WARRANTY 
SERVICE AS TO A SOFTWARE PRODUCT, CONTACT THE D-LINK OFFICE NEAREST YOU.  AN ADDRESS/TELEPHONE/FAX/E-
MAIL/WEB SITE LIST OF D-LINK OFFICES IS PROVIDED IN THE BACK OF THIS MANUAL. 
LIMITATION OF WARRANTIES 
IF THE D-LINK PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, THE CUSTOMER’S SOLE REMEDY SHALL 
BE, AT D-LINK ’S OPTION, REPAIR OR REPLACEMENT. THE FOREGOING WARRANTIES AND REMEDIES ARE 
EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, EITHER IN FACT OR BY 
OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING WARRANTIES OF MERCHANTABILITY AND 
FITNESS FOR A PARTICULAR PURPOSE. D-LINK NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO 
ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE, INSTALLATION MAINTENANCE OR USE 
OF D-LINK ’S PRODUCTS 
D-LINK SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THAT THE 
ALLEGED DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY THE CUSTOMER’S OR ANY THIRD 
PERSON’S MISUSE, NEGLECT, IMPROPER INSTALLATION OR TESTING, UNAUTHORIZED ATTEMPTS TO REPAIR, OR 
ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR BY ACCIDENT, FIRE, LIGHTNING OR OTHER 
HAZARD. 
LIMITATION OF LIABILITY 
IN NO EVENT WILL D-LINK BE LIABLE FOR ANY DAMAGES, INCLUDING LOSS OF DATA, LOSS OF PROFITS, COST OF 
COVER OR OTHER INCIDENTAL, CONSEQUENTIAL OR INDIRECT DAMAGES ARISING OUT THE INSTALLATION, 
MAINTENANCE, USE, PERFORMANCE, FAILURE OR INTERRUPTION OF A D- LINK PRODUCT, HOWEVER CAUSED 
AND ON ANY THEORY OF LIABILITY. THIS LIMITATION WILL APPLY EVEN IF D-LINK HAS BEEN ADVISED OF THE 
POSSIBILITY OF SUCH DAMAGE. 
IF YOU PURCHASED A D-LINK PRODUCT IN THE UNITED STATES, SOME STATES DO NOT ALLOW THE LIMITATION 
OR EXCLUSION OF LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION MAY 
NOT APPLY TO YOU. 
Trademarks 
Copyright 
2000 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 trademarks 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 1976 

 vii
FCC Warning 
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This 
device may not cause harmful interference, and (2) this device must accept any interference received, including 
interference that may cause undesired operation. 
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a 
residential installation. This generates, uses and can radiate radio frequency energy and, if not installed and used 
in accordance with the instructions, may cause harmful interference to radio communications. However, there is 
no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful 
interference to radio or television reception, which can be determined by turning equipment off 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. 
  Consult the dealer or an experienced radio/TV technician for help. 
CE Mark Warning 
This is a Class B product.  In a domestic environment, this product may cause radio interference in which case 
the user may be required to take adequate measures. 
VCCI Class B Warning 

 ix
Notices 
NOTE: This message denotes neutral or positive information that calls out 
important points to the text. A note provides information that may apply only 
in special cases. 
CAUTION: Cautions call special attention to hazards that can cause system 
damage or data corruption, to a lesser degree than warnings. 
WARNING: Warnings call special attention to hazards that can cause 
system damage, data corruption, personal injury, or death. 
Statements: 
Warning 
To ensure compliance with FCC RF exposure requirements, the antenna used for 
this device must be installed to provide a separation distance of at least 20 cm 
from all persons and must not be co-located or operating in conjunction with any 
other antenna or radio transmitter. Installers and end-users must follow the 
installation instructions provided in this user guide. 
1.  Modifications to this device, unless expressly approved by D-Link, could void the user’s 
right to operate this equipment. 
2.  The frequency band 5150-5250 MHz is only for indoor usage to reduce potential for harmful 
interference to co-channel Mobile Satellite systems. The device can only be operated as an 
indoor unit. 
3.  High power radars are allocated as primary users (meaning they have priority) of 5250-
5350 MHz and 5650-5850 MHz and these radars could cause interference and/or damage 
to LELAN devices used in Canada. 
4.  Radio Frequency interference requirements: The device is restricted to indoor use only. 
FCC requires this product to be used indoors due to its operation in the frequency range 
5.15 to 5.25 GHz.

Contents 
List of Figures .........................................................xv 
List of Tables.........................................................xvii 
Preface ....................................................................xix 
About this Document ....................................................................................xix 
Audience ...................................................................................................... xx 
Additional Resources.................................................................................... xx 
1 Introduction............................................................1-1 
Package Contents .......................................................................................1-1 
System Requirements .................................................................................1-2 
2 Windows 2000 ........................................................2-1 
Driver Installation (First-time Install) ............................................................2-1 
Driver Installation (Previous Driver Installed)...............................................2-5 
Driver Uninstallation ..................................................................................2-14 
Device Configuration .................................................................................2-17 
Infrastructure Mode .............................................................................2-22 
Ad Hoc Mode.......................................................................................2-23 
TCP/IP Setup ......................................................................................2-24 

3 Windows Millennium Edition ............................... 3-1 
Driver Installation.........................................................................................3-1 
Driver Uninstallation ....................................................................................3-5 
Device Configuration ...................................................................................3-7 
Infrastructure Mode ...............................................................................3-9 
Ad Hoc Mode.......................................................................................3-10 
TCP/IP Configuration...........................................................................3-12 
4  Windows 98 Second Edition ................................ 4-1 
Driver Installation.........................................................................................4-1 
Driver Uninstallation ....................................................................................4-5 
Device Configuration ...................................................................................4-8 
Infrastructure Mode ...............................................................................4-9 
Ad Hoc Mode.......................................................................................4-11 
TCP/IP Setup ......................................................................................4-13 
5 Windows XP........................................................... 5-1 
Driver Installation (First-time Install) ............................................................5-1 
Driver Uninstallation ....................................................................................5-6 
Device Configuration .................................................................................5-10 
Infrastructure Mode .............................................................................5-12 
Ad Hoc Mode.......................................................................................5-13 
TCP/IP Setup ......................................................................................5-15 
Windows XP Wireless Network Configuration ...........................................5-20 
Infrastructure Mode .............................................................................5-22 
Ad hoc mode .......................................................................................5-24 
Connect to an Available Wireless Network..........................................5-26 
6 Windows NT 4.0..................................................... 6-1 
Driver Installation and TCP/IP Setup ...........................................................6-1 
Device Configuration ...................................................................................6-7 

Infrastructure Mode ...............................................................................6-8 
Ad Hoc Mode.......................................................................................6-11 
Verify Connection ................................................................................ 6-13 
Driver Uninstallation ..................................................................................6-15 
7 LinkMon ..................................................................7-1 
Installation ...................................................................................................7-1 
Features ......................................................................................................7-5 
8 RFSilent ..................................................................8-1 
System Requirements .................................................................................8-1 
Windows 98SE Environment .................................................................8-1 
RFSilent Setup ............................................................................................8-2 
Operation.....................................................................................................8-2 
9 Troubleshooting ....................................................9-1 
A  Channel and Data Rate Selection ....................A-9-2 


List of Figures 
Figure 2-1. Infrastructure Mode.............................................................. 2-17 
Figure 2-2. Ad Hoc Mode ....................................................................... 2-18 
Figure 8-1. RFSilent Icon ......................................................................... 8-2 
Figure 8-2. RFSilent Menu Selections...................................................... 8-2 


List of Tables 
Table 8-1. RFSilent Menu Descriptions .................................................. 8-3 


Preface 
This user’s guide provides the necessary information for first-time users to 
successfully install the D-Link Network Driver Interface Specification (NDIS) 
driver, for the purpose of evaluating and/or operating the D-Link DWL-A650 
Station Reference Design in a Microsoft Windows environment. This guide 
also provides information for users who wish to upgrade the D-Link NDIS 
driver from previous releases. 
This guide describes the steps required to install NDIS drivers for the D-Link 
DWL-A650 Wireless Network Adapter in Windows 2000, Windows Millennium 
Edition, Windows 98 Second Edition, Windows XP, and Windows NT 4.0. 
This guide also includes detailed instructions for configuring the PC Card 
device, or IEEE 802.11a station (STA), to interact with an access point (AP) 
in infrastructure mode and with other STAs in ad hoc mode. Instructions for 
installing or upgrading the diagnostic utility LinkMon are also included. You 
should also read this before proceeding to install the D-Link DWL-A650 
Wireless Network Adapter and NDIS driver in the targeted operating system 
(OS) environment.  
About this Document 
The document consists of the following chapters and appendixes: 
Chapter 1  Introduction—Hardware, Software, and System 
Requirements needed to setup D-Link DWL-A650 Station 
Reference Design. 
Chapter 2  Windows 2000—Installation/Uninstallation Procedures and 
Device/Network Configurations for Windows 2000. 
Chapter 3  Windows Millennium Edition—Installation/Uninstallation 
Procedures and Device/Network Configurations for Windows 
Millennium Edition. 
Chapter 4  Windows 98 Second Edition—Installation/Uninstallation 
Procedures and Device/Network Configurations for Windows 
98 Second Edition. 
Chapter 5  Windows XP—Installation/Uninstallation Procedures and 
Device/Network Configurations for Windows XP. 

Chapter 6  Windows NT 4.0—Installation/Uninstallation Procedures 
and Device/Network Configurations for Windows NT 4.0.  
Chapter 7  LinkMon—Graphical User Interface for Operational Status 
and Statistics of D-Link DWL-A650 Station Reference 
Design. 
Chapter 8  RFSilent—RFSilent application that allows you to enable or 
disable the RF Signal (radio) on all D-Link STA Reference 
Designs. 
Chapter 9  Troubleshooting—Hints on fixing common 
Installation/Uninstallation and Device/Network 
Configurations issues.  
Appendix A  Channel and Data Rate Selection—Describes how to 
select Fixed Data Rate and/or Channel Frequency for 
specific testing. 
Audience 
This document is intended for D-Link customers who wish to install and 
evaluate the D-Link DWL-A650 Station Reference Design in the supported 
Microsoft Windows environments. 
Additional Resources 
D-Link STA Reference Design hardware, software, and documentation 
contain proprietary information of D-Link Communications, Inc., and are 
provided under a license agreement containing restrictions on use and 
disclosure, and are also protected by copyright law. Reverse engineering of 
this hardware, software, or documentation is prohibited. 
The following resources should be referenced regarding topics that are not 
addressed in this document: 
 
AR5110 Radio-on-a-Chip for 5-GHz Wireless LANs data sheet 
 
AR5210 MAC/Baseband Processor for IEEE 802.11a 5-GHz Wireless 
LAN data sheet 
 
AP User’s Guide 
 
STA Reference Design Functional Specification 

1-1 
1 
Introduction 
The D-Link DWL-A650 Wireless Network Adapter is an IEEE 802.11a two-chip 
solution reference design based on the Atheros AR5110 and AR5210 chipset. 
This reference design implements a half-duplex, Orthogonal Frequency Division 
Multiplexing (OFDM) baseband processor supporting all IEEE 802.11a data rates 
(6 to 54 Mbps). It also supports the D-Link Turbo ModeTM supporting data rates 
up to 108 Mbps. The host interface is compatible with the PC Card 7.1 standard. 
You can find information regarding the D-Link Station Reference Designs in the 
detailed D-Link STA Reference Design Functional Specification. 
Package Contents 
Make sure the following materials are available before you begin: 
 
One 802.11a PCI Card 
 
One Installation CD-ROM containing software and utilities and this user’s 
guide 
 
One 802.11a PCI Card Quick Start Guide 
 
One warranty registration card 

1-2 
System Requirements 
 
Laptop PC containing: 
−  32-bit CardBus slot (or Desktop PC with PC Card-PCI adapter) 
−  32 MB memory or greater 
−  300 MHz processor or higher 
 
Microsoft Windows 2000/Windows Millennium Edition/Windows 98 
Second Edition/Windows XP/Windows NT 4.0 (with Service Pack 6) 

2-1 
2 
Windows 2000 
Driver Installation (First-time Install) 
Insert the D-Link DWL-A650 Wireless Network Adapter into a 32-bit CardBus 
slot and follow these steps to install the NDIS driver: 
1.  Wait for the following dialog box to display, and click Next to continue. 

2-2 
2.  Choose “Search for a suitable driver for my device (recommended),” and 
click Next. 
3.  Insert the installation CD in your CD-ROM drive. Choose “Specify a 
location” under “Optional search locations,” and click Next to continue. 

2-3 
4.  Browse to the location where the NDIS driver is located (assuming D is 
the CD-ROM drive), the default folder is D:\ndis\bin\production\ndis5. 
Click OK to continue. 
5.  When you find the D-Link driver installation file (net5210b.inf), click Next 
to continue. 

2-4 
6.  The D-Link NDIS evaluation driver currently does not have a digital 
signature from Microsoft. Therefore, Windows 2000 shows a warning 
message. Click Yes to proceed with driver installation. 
7.  Click Finish to complete the driver installation. See Section “Device 
Configuration” for the device configuration.  

2-5 
Driver Installation (Previous Driver Installed) 
If the system already has a previous release of the D-Link NDIS installed, 
Windows does not prompt for the device driver when the WLAN Card is 
inserted. Follow the steps below to update the NDIS driver: 
1.  Start System Properties from Control Panel. Under Hardware tab, click 
Device Manager. 

2-6 
2.  Within Device Manager, right-click “D-Link DWL-A650 Wireless Network 
Adapter” under “Network adapters” device node, and click Properties. 

2-7 
3.  Click “Update Driver…” from the Driver tab. Note the Driver Version that 
you are updating from. You may need to verify this field again after driver 
update completes to make sure Release 1.3 driver has been updated 
correctly. 
4.  Click Next to continue. 

2-8 
5.  Choose “Display a list of the known drivers for this device so that I can 
choose a specific driver,” and click Next to continue. 
6.  Insert the Release 1.3 CD into your CD-ROM drive. Click “Have Disk…” 
to continue. 

2-9 
7.  Browse to the location where the NDIS driver is located (assuming D is 
the CD-ROM drive), the default folder is “D:\ndis\bin\production\ndis5”. 
Click OK to continue. 
8.  Select “D-Link DWL-A650 Wireless Network Adapter” from the list and 
click Next to continue. 

2-10 
9.  Click Yes to continue when Windows displays the warning message. 

2-11 
10. Click Next to proceed with installation. 
11. The D-Link NDIS evaluation driver currently does not have a digital 
signature from Microsoft. Therefore, Windows 2000 shows a warning 
message. Click Yes to proceed with driver installation. 

2-12 
12. Click Finish. 
13. Note that Driver Version should display 1.3 as the major revision number. 
Click OK to continue. 

2-13 
14. Click Yes to restart system. 
15. After system restarts, the “D-Link DWL-A650 Wireless Network Adapter” 
now displays under “Network adapters” in the Device Manager. Proceed 
to Section “Device Configuration” for device configuration information.  

2-14 
Driver Uninstallation 
This section provides information about uninstallation procedures required for 
upgrading the NDIS driver from previous D-Link software releases. If the 
system does not have previously installed versions of the NDIS driver and 
you wish to remove the newly installed driver from the system, proceed to 
Step 4. 
The NDIS driver since Release 1.0 no longer leverages the Transport Driver 
Interface (TDI) protocol to provide the LinkMon programming interface. The 
TDI protocol should be uninstalled. Follow these steps to uninstall the TDI 
protocol: 
1.  To remove the NDIS driver from the OS, go to Device Manager, right-
click “D-Link DWL-A650 Wireless Network Adapter,” and choose 
Uninstall. 

2-15 
2.  Click OK to uninstall the device. 
3.  When the device is uninstalled from Device Manager, search for and 
delete the driver files that reside in the system. To do so, go to the Start 
menu and choose Search For Files or Folders…, enter “oem*.inf” in the 
“Search for files or folders named:” field, and enter “D-Link” in the 
“Containing text:” field. Click Search Now. A few files matching these 
criteria are possible, if previous drivers have not been removed properly. 
Choose the files that have been found and delete them from the system. 

2-16 
4.  To complete the uninstallation, “ar5210b.sys” should also be removed 
from the “\WINNT\system32\drivers” folder. 

2-17 
Device Configuration 
Configuration of the D-Link DWL-A650 Wireless Network Adapter can be 
done through the Network Control Panel (NCP) in adapter properties. You 
can set the Wireless Network Adapter to work in one of two modes, either 
infrastructure mode (which leverages an AP) or ad hoc mode (which consists 
of a group of stations participating in the WLAN).  
In infrastructure mode, the Wireless Network Adapter participates in a basic 
service set (BSS) as a station, and communicates with the other stations 
through an AP, as illustrated in Figure 2-1. 
Ethernet
STA1 STA2
AP
Figure 2-1. Infrastructure Mode 

2-18 
In ad hoc mode, a Wireless Network Adapter works within an independent 
basic service set (IBSS), as illustrated in Figure 2-2. All stations 
communicate directly with other stations without an AP.  
STA1
STA2
STA3
STA4
STA5
Figure 2-2.  Ad Hoc Mode 
To configure the DWL-A650 Wireless Network Adapter: 
1.  In the Device Manager, right-click “D-Link DWL-A650 Wireless Network 
Adapter,” and click Properties to access the properties of the adapter. 

2-19 
2.  Configuration additions, modifications, and deletions are made under the 
“Settings” tab of the “D-Link DWL-A650 Wireless Network Adapter” 
properties.  
3.  Select one of the configurations under the configuration list, and click 
Modify to show the “Network Configuration Settings” screen. This 
property sheet has two pages: General and Security. The General page 
has the following fields: 
−  Configuration Name: This field identifies the configuration. This name 
must be unique. Configuration names are case insensitive. 
−  Network Name (SSID): This is the name of the IEEE 802.11a 
wireless network, for example, “D-Link 802.11a Wireless Network.” 
This field has a maximum limit of 32 characters.  
−  Network Connection: This field defines whether the STA is configured 
for an ad hoc or infrastructure network.  

2-20 
−  Power Saving: This field allows the configuration of power 
management options. The options are Off, Normal, and Maximum. 
Power management is disabled when ad hoc mode is selected in the 
Network Connection field. When the Power Saving setting is Off, the 
adapter receives full power from the PC. When the Power Saving 
setting is Normal, the driver turns off power to the adapter for brief 
periods over briefly-spaced time intervals. When the Power Saving 
setting is Maximum, the driver turns off power to the adapter for 
longer periods over more widely-spaced time intervals. 
−  Turbo Mode: This field enables or disables D-Link turbo mode. 
−  Locally Administered Address: This field defines the locally 
administered MAC address (LAA). To enter a value in the address 
field, the check box needs to be selected. Typically, an LAA is not 
required, because the driver automatically loads a unique, globally 
administered address from the EEPROM. 
4.  The next tab on this property sheet allows for the selection of security 
features. The fields on this page are as follows: 
−  Enable Security: This field completely enables or disables the IEEE 
802.11 wired equivalent privacy (WEP) security feature.  
−  Default Encryption Key: This field defines the type of encryption key 
to use (either Unique Key or Shared Keys). This field allows you to 
select only a key (Unique, First, Second, Third, or Fourth) whose 
corresponding field has been completed. 

2-21 
−  Unique Key: This field defines the unique encryption key for security 
for the current network configuration. In ad hoc mode, this encryption 
key type is not used. To enable security using a Unique Key, this field 
must be populated. 
−  Shared Keys: These fields define a set of shared encryption keys. 
To enable security using Shared Keys, at least one Shared Key field 
must be populated.  
−  Key Length: This field defines the length for each encryption key. 
As the Key Length is changed, the number of available characters in 
the field is changed automatically. If after a key is entered the length 
is adjusted to a smaller number, the key is automatically truncated to 
fit. If the length is increased again, the field is not automatically 
updated to its previous value. 
All encryption key fields are displayed only when initially entered. On 
subsequent entry into the security property page, the fields are masked. 
The keys must be entered as hexadecimal digits. 

2-22 
Infrastructure Mode 
To configure an D-Link DWL-A650 Wireless Network Adapter in 
infrastructure mode: 
1.  Ensure that the “Locally Administered Address” checkbox is unchecked.  
2.  Choose the following settings: 
−  Configuration Name: This field identifies the configuration. This name 
must be unique. Configuration names are case insensitive. 
−  Network Name (SSID): This is the name of the IEEE 802.11a 
wireless network, for example, “D-Link 802.11a Wireless Network.” 
This field has a maximum limit of 32 characters. If this field is left 
blank, the STA connects to the AP with the best signal strength. 
−  Network Connection: AP (infrastructure). 
−  Power Saving: This field allows the configuration of power 
management options. The options are Off, Normal, and Maximum.  
−  Turbo Mode: This field enables or disables D-Link turbo mode. 
−  Locally Administered Address: This field defines the locally 
administered MAC address (LAA). To enter a value in the address 
field, the check box needs to be selected.  

2-23 
Usually infrastructure mode is used in an enterprise environment where APs 
are installed and maintained by corporate IT staff. Much of the data in the 
enterprise network is confidential. It is important to configure security to make 
sure only stations with appropriate keys can receive sensitive data. The D-
Link DWL-A650 Wireless Network Adapter and NDIS driver support key 
lengths of 40 bits, 104 bits, and 128 bits. Typically, the appropriate encryption 
and decryption keys are supplied by the corporate IT staff. 
Ad Hoc Mode 
An ad hoc network usually is a short-lived network with a small number of 
stations. The network is usually created for a special purpose such as 
exchanging data between friends, or between customer and client. Because 
the duration of the ad hoc network tends to be limited, Power Saving and 
Security features are not typically a requirement. For ad hoc network activity, 
the Power Saving and Security features can be disabled. Currently, shared 
key security is supported in ad hoc mode. Future D-Link software 
implementations will provide unique key support. 
In ad hoc mode, a station scans the air for an existing BSS. If no BSS is 
found, the station establishes a BSS for other stations to join. When other 
stations scan the air and find an established BSS in place, they join that BSS 
to form an ad hoc network. If a specific set of stations requires ad hoc 
network connectivity, it is recommended to have one station establish a BSS 
first before configuring the remaining stations. This prevents the scenario of 
several stations trying to form a BSS at the same time, which can result in 
multiple singular BSSs being established, rather than a single BSS with 
multiple stations. 
 
Configuration Name: This field identifies the configuration. This name 
must be unique. Configuration names are case insensitive. 
 
Network Name (SSID): A Network Name is mandatory for ad hoc mode. 
The SSID for all stations in a single ad hoc network must be the same. 
 
Network Connection: Ad Hoc. 
 
Power Saving: Power saving mode is not currently supported in an ad 
hoc network. 
 
Turbo Mode: All stations participating in the ad hoc network must have 
the same rate setting. 
 
Locally Administered Address: This field defines the locally administered 
MAC address (LAA). To enter a value in the address field, the check box 
needs to be selected.  

2-24 
TCP/IP Setup 
After configuring the D-Link DWL-A650 Wireless Network Adapter through 
the Network Control Panel, the TCP/IP address for the network device must 
be configured.  
1.  Open the “Control Panel” and click “Network and Dial-up Connections.” 
2.  Find the “Local Area Connection” that is associated with the D-Link DWL-
A650 Wireless Network Adapter. Right-click that connection, and click 
Properties. 

2-25 
3.  Select “Internet Protocol (TCP/IP)” and click Properties. 
4.  Click “Use the following IP address” and input an IP address and Subnet 
mask. Assigning an IP address and Subnet mask allows stations to 
operate in infrastructure mode and to have Internet access. “Default 
gateway” and “DNS server” information is also required. IP configuration 
information (DHCP or assigned IP address, Gateway and DNS server IP 
addresses) is usually obtained from the corporate IT staff.  
5.  After obtaining IP configuration information from the appropriate IT staff, 
click OK in both “Internet Protocol (TCP/IP) Properties” and “Local Area 
Connection Properties” to complete the IP configuration. 

2-26 
6.  Choose Start > Programs > Accessories > Command Prompt to open the 
DOS command prompt window. Type “ipconfig” at the C:\> prompt to 
determine if the TCP/IP configuration has taken effect. To test IP 
connectivity in ad hoc or infrastructure mode, use the “ping <ipaddress>” 
command. When a TCP/IP connection is established, the LinkMon utility 
(See Chapter 7) can be used to monitor the D-Link DWL-A650 Wireless 
Network Adapter operating status. 

2-27 
7.  To map the drive on another machine to your computer, right-click “My 
Computer” and click “Map Network Drive….” 
8.  After mapping the drive, you can perform file transfers, use video 
streaming applications, and all other network data transfers that are 
normally performed with wired 10/100 Ethernet connections. 

3-1 
3 
Windows Millennium 
Edition 
Driver Installation 
D-Link recommends that you remove any existing D-Link NDIS driver on the 
PC system before installing Version Error! Reference source not found. 
release of the NDIS driver. See Section “Driver Uninstallation” on page 3-5 
for the instructions on how to remove previous driver releases. When the 
system no longer has the D-Link NDIS driver installed, insert the DWL-A650 
Wireless Network Adapter into a 32-bit CardBus slot, and follow these steps 
to install the NDIS driver: 
1.  Wait for the following dialog box to appear. Choose “Specify the location 
of the driver (Advanced),” and click Next to continue. 

3-2 

3-3 
2.  Choose “Search for the best driver for your device. (Recommended)” and 
select “Specify a location.” Click Browse to locate the NDIS driver. The 
default folder is “E:\ndis\bin\production\ndis5” (assuming E: is the CD-
ROM drive). Click Next to continue. 
3.  When the D-Link driver installation file (NET5210B.INF) has been found, 
click Next to continue. 

3-4 
4.  Click Finish to continue, and restart the system to complete driver 
installation. Refer to Section “Device Configuration” on page 3-7 for 
device configuration.  

3-5 
Driver Uninstallation 
This section provides uninstallation procedures for removing the D-Link NDIS 
driver from the system. Uninstallation is recommended for upgrading the 
NDIS driver from previous D-Link driver releases. 
1.  To remove the NDIS driver from the OS, go to Start > Search > For Files 
or Folders…, and search for the INF file containing the “D-Link” text string 
under the \WINDOWS\INF folder. Be sure to include subfolders in the 
search criteria. When “D-Linknet5210b.inf” has been found, delete it by 
right-clicking the file and choose Delete. 

3-6 
2.  From Control Panel, launch the System Properties window. Select “D-
Link DWL-A650 Wireless Network Adapter” from Device Manager, and 
click Remove to uninstall the device. 
3.  Click OK to confirm the removal of the device. Restart the system to 
complete un-installation. 

3-7 
Device Configuration 
Configuration of the D-Link DWL-A650 Wireless Network Adapter can be 
done through the D-Link NIC Configuration utility found in the Windows 
Control Panel. Similar to Windows 2000, the device can be set to work in one 
of two modes: infrastructure mode or ad hoc mode. Please refer to Section 
“Device Configuration” beginning on page 2-17 for more details on these 
network connection types.  
To launch the configuration utility, go to Control Panel and double-click on 
the D-Link NIC Configuration icon. 

3-8 
The configuration utility allows addition, modification, and deletion of the 
configuration profiles. Select one of the existing configuration profiles under 
the configuration list to modify, or click New to add a new configuration 
profile. Follow Section “Infrastructure Mode” on page 3-9 and Section “Ad 
Hoc Mode” on page 3-10 to set up the station to work in infrastructure mode 
and ad hoc mode. 

3-9 
Infrastructure Mode 
This section defines the process of configuring an D-Link DWL-A650 
Wireless Network Adapter in infrastructure mode. See Section “Device 
Configuration” beginning on page 2-17 for detailed descriptions of each 
option in the Network Configuration Settings. 
1.  Under the “General” tab, make sure the “Locally Administered Address” 
checkbox is unchecked. Use the following information as a guideline to 
choose the values of each field in the configuration window: 
−  Configuration Name: This field identifies the configuration. This name 
must be unique. Configuration names are case insensitive. 
−  Network Name (SSID): This is the name of the IEEE 802.11a 
wireless network. This field has a maximum limit of 32 characters. If 
this field is left blank, the STA connects to the AP with the best signal 
strength. 
−  Network Connection: AP (Infrastructure) 
−  Power Saving: This field allows the configuration of power 
management options. The options are Off, Normal, and Maximum.  
−  Turbo Mode: This field enables or disables D-Link turbo mode. 

3-10 
2.  Usually, infrastructure mode is used in an enterprise environment where 
APs are installed and maintained by corporate IT staff. Much of the data 
in the enterprise network is confidential. It is important to configure 
security to make sure only stations with appropriate keys can receive 
sensitive data. The D-Link DWL-A650 Wireless Network Adapter and 
NDIS driver support key lengths of 40 bits, 104 bits and 128 bits. 
Typically, the appropriate encryption and decryption keys are supplied by 
the corporate IT staff. 
Ad Hoc Mode 
This section defines the process of configuring an D-Link DWL-A650 
Wireless Network Adapter in ad hoc or IBSS mode. See Section “Ad Hoc 
Mode” on page 2-23 for descriptions of ad hoc operation. 
1.  Similar to the set-up of AP Infrastructure mode described in the previous 
section, ad hoc mode is also configured by changing the options in the 
Network Configuration Settings of the D-Link NIC Configuration utility. 
Use the following information as a guideline to choose the values of each 
field in the configuration window:  
−  Configuration Name: This field identifies the configuration. This name 
must be unique. Configuration names are case insensitive. 
−  Network Name (SSID): A Network Name is mandatory for ad hoc 
mode. The SSID for all stations in a single ad hoc network must be 
the same.  
−  Network Connection: Ad Hoc.  

3-11 
−  Power Saving: Power saving mode is not currently supported in an ad 
hoc network. 
−  Turbo Mode: All stations participating in the ad hoc network must 
have the same rate setting.  
−  Locally Administered Address: This field defines the locally 
administered MAC address (LAA). To enter a value in the address 
field, the check box needs to be selected.  
2.  You can optionally set up other properties, but because the duration of 
the ad hoc network tends to be limited, Power Saving and Security 
features are not typically a requirement. For ad hoc network activity, the 
Power Saving and Security features can be disabled. Currently, shared 
key security is supported in ad hoc mode. Future D-Link software 
implementations will provide unique key support. 
3.  Click OK when the properties are set correctly. The system needs to 
reboot in order for the changes to take effect.  
Note that in ad hoc mode, a station scans the air for an existing BSS. If no 
BSS is found, the station establishes a BSS for other stations to join. When 
other stations scan the air and find an established BSS in place, they join that 
BSS to form an ad hoc network. If a specific set of stations requires ad hoc 
network connectivity, it is recommended to have one station establish a BSS 
first before configuring the remaining stations. This prevents the scenario of 
several stations trying to form a BSS at the same time, which can result in 
multiple singular BSSs being established, rather than a single BSS with 
multiple stations. 

3-12 
TCP/IP Configuration 
After configuring the D-Link DWL-A650 Wireless Network Adapter network 
adapter properties, the TCP/IP address for the network device needs to be 
configured.  
1.  From Control Panel, launch the Network properties window. Select 
“TCP/IP → D-Link DWL-A650 Wireless Network Adapter” and click 
Properties. Depending on the type of network the station connects to, 
Gateway and DNS Configuration information can also be required. 
IP configuration information (DHCP or assigned IP address, Gateway and 
DNS server IP addresses) is usually obtained from the corporate IT staff. 
For a simple demonstration, the station is assigned a static IP address. 
From “TCP/IP Properties,” choose “IP Address” and select “Specify an IP 
address.” Input an IP address and subnet mask. Assigning an IP address 
and subnet mask allows the station to interact with the AP or other 
stations in the same IP subnet. Click OK to complete the TCP/IP 
configuration, and restart the system for the changes to take effect.  

3-13 
2.  Choose Start > Programs > Accessories > Command Prompt to open the 
DOS command prompt window. Type “ipconfig” to determine if the 
TCP/IP configuration has taken effect. To test IP connectivity in ad hoc or 
infrastructure mode, use the “ping <ipaddress>” command. When a 
TCP/IP connection is established, the LinkMon utility (see Chapter 7) can 
be used to monitor the D-Link DWL-A650 Wireless Network Adapter 
operating status. 

3-14 
3.  To map the drive on another machine to your computer, right-click “My 
Computer” and click “Map Network Drive….” Specify the path of a 
network-shared folder. 
4.  After mapping the drive, you can perform file transfers, video streaming, 
and all other network data transfers that are normally performed with 
wired 10/100 Ethernet connections. 

3-15 

4-1 
4 
Windows 98 Second 
Edition 
Driver Installation 
D-Link recommends that you remove any existing D-Link NDIS driver on the 
PC system before installing Version 1.3 release of the NDIS driver. 
See Section “Driver Uninstallation” on page 4-5 for the instructions on how to 
remove previous driver releases. When the system no longer has the D-Link 
NDIS driver installed, insert the DWL-A650 Wireless Network Adapter into a 
32-bit CardBus slot, and follow these steps to install the NDIS driver: 
1.  Wait for the following dialog box to appear, and click Next to continue. 

4-2 

4-3 
2.  Choose “Search for the best driver for your device. (Recommended),” 
and click Next. 
3.  Insert the D-Link Software Release CD in your CD-ROM drive. Choose 
“Specify a location” and browse to the location where the NDIS driver is 
located. The default folder is D:\ndis\bin\production\ndis5 (assuming D: is 
the CD-ROM drive). Click Next to continue. 

4-4 
4.  When the D-Link driver installation file (NET5210B.INF) has been found, 
click Next to continue. 
5.  Click Finish to continue. 

4-5 
6.  Click Yes to restart the system and complete driver installation. 
See Section “Device Configuration” on page 4-8 for device configuration.  
Driver Uninstallation 
This section provides uninstallation procedures for removing the D-Link NDIS 
driver from the system. Uninstallation is recommended for upgrading the 
NDIS driver from previous D-Link driver releases. 
1.  To remove the NDIS driver from the OS, go to Start > Search > For Files 
or Folders…, and search for the INF file containing the “D-Link” text string 
under the \WINDOWS\INF folder. Be sure to include subfolders in the 
search criteria.  

4-6 
2.  When “D-Linknet5210b.inf” has been found, delete it by right-clicking the 
file and choose “Delete.” 

4-7 
3.  From Control Panel, launch the Network properties window. Select “D-
Link DWL-A650 Wireless Network Adapter” from the list, and click 
Remove to uninstall the device. 
4.  Click OK to confirm the removal of the device. Restart the system to 
complete uninstallation. 

4-8 
Device Configuration 
Configuration of the D-Link DWL-A650 Wireless Network Adapter can be 
done through the D-Link NIC Configuration utility found in the Windows 
Control Panel. Similar to Windows 2000 the device can be set to work in one 
of two modes: infrastructure mode or ad hoc mode. Please refer to Section 
“Device Configuration” beginning on page 2-17 for more details on these 
network connection types.  
To launch the configuration utility, go to Control Panel and double-click on 
the D-Link NIC Configuration icon. 
The configuration utility allows addition, modification, and deletion of the 
configuration profiles. Select one of the existing configuration profiles under 
the configuration list to modify, or click New to add a new configuration 
profile. Follow Section “Infrastructure Mode” on page 4-9 and Section “Ad 
Hoc Mode” on page 4-11 to set up the station to work in infrastructure mode 
and ad hoc mode. 

4-9 
Infrastructure Mode 
This section defines the process of configuring an D-Link DWL-A650 
Wireless Network Adapter in infrastructure mode. See Section “Device 
Configuration” beginning on page 2-17 for detailed descriptions of each 
option in the Network Configuration Settings. 
1.  Under the “General” tab, make sure the “Locally Administered Address” 
checkbox is unchecked. Use the following information as a guideline to 
choose the values of each field in the configuration window: 
−  Configuration Name: This field identifies the configuration. This name 
must be unique. Configuration names are case insensitive. 
−  Network Name (SSID): This is the name of the IEEE 802.11a 
wireless network. This field has a maximum limit of 32 characters. If 
this field is left blank, the STA connects to the AP with the best signal 
strength. 
−  Network Connection: AP (Infrastructure) 
−  Power Saving: This field allows the configuration of power 
management options. The options are Off, Normal, and Maximum.  
−  Turbo Mode: This field enables or disables D-Link turbo mode. 

4-10 
2.  Usually, infrastructure mode is used in an enterprise environment where 
APs are installed and maintained by corporate IT staff. Much of the data 
in the enterprise network is confidential. It is important to configure 
security to make sure only stations with appropriate keys can receive 
sensitive data. The D-Link DWL-A650 Wireless Network Adapter and 
NDIS driver support key lengths of 40 bits, 104 bits, and 128 bits. 
Typically, the appropriate encryption and decryption keys are supplied by 
the corporate IT staff. 

4-11 
Ad Hoc Mode 
This section defines the process of configuring an D-Link DWL-A650 
Wireless Network Adapter in ad hoc or IBSS mode. See Section “Ad Hoc 
Mode” on page 2-23 for descriptions of ad hoc operation. 
1.  Similar to the setup of the AP infrastructure mode described in the 
previous section, ad hoc mode is also configured by changing the 
Network Configuration Settings of the D-Link NIC Configuration utility. 
Use the following information as a guideline to choose the values of each 
field in the configuration window:  
−  Configuration Name: This field identifies the configuration. This name 
must be unique. Configuration names are case insensitive. 
−  Network Name (SSID): A Network Name is mandatory for ad hoc 
mode. The SSID for all stations in a single ad hoc network must be 
the same.  
−  Network Connection: Ad Hoc.  
−  Power Saving: Power saving mode is not currently supported in an ad 
hoc network. 
−  Turbo Mode: All stations participating in the ad hoc network must 
have the same rate setting.  
−  Locally Administered Address: This field defines the locally 
administered MAC address (LAA). To enter a value in the address 
field, the check box needs to be selected.  

4-12 
2.  You can optionally set up other properties, but because the duration of 
the ad hoc network tends to be limited, Power Saving and Security 
features are not typically a requirement. For ad hoc network activity, the 
Power Saving and Security features can be disabled. Currently, shared 
key security is supported in ad hoc mode. Future D-Link software 
implementations will provide unique key support. 
3.  Click OK when the properties are set correctly. The system needs to 
reboot in order for the changes to take effect.  
Note that in ad hoc mode, a station scans the air for an existing BSS. If no 
BSS is found, the station establishes a BSS for other stations to join. When 
other stations scan the air and find an established BSS in place, they join that 
BSS to form an ad hoc network. If a specific set of stations requires ad hoc 
network connectivity, it is recommended to have one station establish a BSS 
first before configuring the remaining stations. This prevents the scenario of 
several stations trying to form a BSS at the same time, which can result in 
multiple singular BSSs being established, rather than a single BSS with 
multiple stations. 

4-13 
TCP/IP Setup 
After configuring the D-Link DWL-A650 Wireless Network Adapter network 
adapter properties, the TCP/IP address for the network device needs to be 
configured.  
1.  From Control Panel, launch the Network properties window. Select 
“TCP/IP → D-Link DWL-A650 Wireless Network Adapter” and click 
Properties. Depending on the type of network the station connects to, 
Gateway and DNS Configuration information can also be required. 
IP configuration information (DHCP or assigned IP address, Gateway and 
DNS server IP addresses) is usually obtained from the corporate IT staff. 
For a simple demonstration, the station is assigned a static IP address. 
From “TCP/IP Properties,” choose “IP Address” and select “Specify an IP 
address.” Input an IP address and subnet mask. Assigning an IP address 
and subnet mask allows the station to interact with the AP or other 
stations in the same IP subnet. Click OK to complete the TCP/IP 
configuration, and restart the system for the changes to take effect.  

4-14 
2.  Choose Start > Programs > Accessories > Command Prompt to open the 
DOS command prompt window. Type “ipconfig” to determine if the 
TCP/IP configuration has taken effect. To test IP connectivity in ad hoc or 
infrastructure mode, use the “ping <ipaddress>” command. When a 
TCP/IP connection is established, the LinkMon utility (see Chapter 7) can 
be used to monitor the D-Link DWL-A650 Wireless Network Adapter 
operating status. 

4-15 
3.  To map the drive on another machine to your computer, right-click “My 
Computer” and click “Map Network Drive….” Specify the path of a 
network-shared folder. 
4.  After mapping the drive, you can perform file transfers, video streaming, 
and all other network data transfers that are normally performed with 
wired 10/100 Ethernet connections. 

5-1 
5 
Windows XP 
Driver Installation (First-time Install) 
D-Link recommends that you remove any existing D-Link drivers on the PC 
system before installing Version Error! Reference source not found. 
release of the NDIS driver. See Section “Driver Uninstallation” on page 5-6 
for the instructions on how to remove previous driver releases. With no 
existing D-Link NDIS driver installed, insert the D-Link DWL-A650 Wireless 
Network Adapter into a 32-bit CardBus slot, and follow these steps to install 
the NDIS driver: 
1.  Wait for the following dialog box to appear. Choose “Install from a list or 
specific location (Advanced),” and click Next to continue. 

5-2 

5-3 
2.  Under “Search for the best driver in these locations,” choose “Include this 
location in the search” and click Browse to find the location of the NDIS 
driver. When the driver location has been identified, click Next to 
continue. 

5-4 
3.  The D-Link NDIS evaluation driver currently does not have a digital 
signature from Microsoft. Therefore, Windows XP shows a warning 
message. Click Continue Anyway to proceed with driver installation. 
4.  Click Finish to complete driver installation, and refer to Section “Device 
Configuration” on page 5-10 for device configuration.  

5-5 

5-6 
Driver Uninstallation 
This section provides uninstallation procedures for removing the D-Link NDIS 
driver from the system. Uninstallation is recommended for upgrading the 
NDIS driver from previous D-Link driver releases. 
1.  To remove the NDIS driver from the OS, go to Device Manager, right 
click “D-Link DWL-A650 Wireless Network Adapter,” and choose 
Uninstall. 
2.  Click OK to uninstall the device. 

5-7 

5-8 
3.  When the device is uninstalled from Device Manager, search for and 
delete the driver installation file that resides in the system. To do so, go to 
Start and choose Search > All files and folder, enter “oem*.inf” in the “All 
or part of the file name” field, and enter “D-Link” in the “A word or phrase 
in the file” field. Enter “C:\WINNT\INF” in the “Look in” field, where C: is 
the drive letter of where Windows XP is installed. Click Search to find the 
driver installation file. 
4.  A file matching the search criteria is displayed. Choose this file and 
delete it from the system. 

5-9 

5-10 
Device Configuration 
Windows XP zero-configuration functionality allows the user to select and join 
a wireless network without having to configure the device separately. You 
can decide to choose the default parameters and directly proceed to zero-
configuration in Section “Windows XP Wireless Network Configuration” on 
page 5-20. 
Similar to Windows 2000, configuration of the D-Link DWL-A650 Wireless 
Network Adapter can be done through the Network Control Panel (NCP) in 
adapter properties. You can set the Wireless Network Adapter to work in one 
of two modes: infrastructure mode or ad hoc mode. See Section “Device 
Configuration” beginning on page 2-17 for more details on these network 
connection types. 
To launch NCP go to Device Manager, right-click “D-Link DWL-A650 
Wireless Network Adapter,” and select Properties to access to the properties 
of the adapter. 

5-11 
Configuration additions, modifications, and deletions are made under the 
“Settings” tab of “D-Link DWL-A650 Wireless Network Adapter Properties.” 
Select one of the configurations under the configuration, click Modify or New 
and complete the steps in Section “Infrastructure Mode” on page 5-12 or 
Section “Ad Hoc Mode” on page 5-13 to set up the station to work in 
infrastructure mode or ad hoc mode, respectively. 

5-12 
Infrastructure Mode 
This section defines the process of configuring an D-Link DWL-A650 
Wireless Network Adapter in infrastructure mode. See Section “Device 
Configuration” beginning on page 2-17 for detailed descriptions of each 
option in the Network Configuration Settings.  
1.  Under the “General” tab, make sure the “Locally Administered Address” 
checkbox is unchecked. Use the following information as a guideline to 
choose the values of each field in the configuration window: 
−  Configuration Name: This field identifies the configuration. This name 
must be unique. Configuration names are case insensitive, for 
example, “Infrastructure.” 
−  Network Name (SSID): This is the name of the IEEE 802.11a 
wireless network, for example, “AP_Network.” This field has a 
maximum limit of 32 characters. If this field is left blank, the STA 
connects to the AP with the best signal strength. 
−  Network Connection: AP (Infrastructure). 
−  Power Saving: This field allows the configuration of power 
management options. The options are Off, Normal, and Maximum.  
−  Turbo Mode: This field enables or disables D-Link turbo mode. 

5-13 
2.  Usually, infrastructure mode is used in an enterprise environment where 
APs are installed and maintained by corporate IT staff. Much of the data 
in the enterprise network is confidential. It is important to configure 
security to make sure only stations with appropriate keys can receive 
sensitive data. The D-Link DWL-A650 Wireless Network Adapter and 
NDIS driver support key lengths of 40 bits, 104 bits and 128 bits. 
Typically, the appropriate encryption and decryption keys are supplied by 
the corporate IT staff. 
Ad Hoc Mode 
This section defines the process of configuring an D-Link DWL-A650 
Wireless Network Adapter in ad hoc or IBSS mode. See Section “Ad Hoc 
Mode” on page 2-23 for descriptions of ad hoc operation. 
1.  Similar to the setup of AP Infrastructure mode described in the previous 
section, ad hoc mode is also configured by changing the options in the 
“Network Configuration Settings” window. Use the following information 
as a guideline to choose the values of each field in the configuration 
window:  
−  Configuration Name: This field identifies the configuration. This name 
must be unique. Configuration names are case insensitive, for 
example, “Ad Hoc.” 

5-14 
−  Network Name (SSID): A Network Name is mandatory for ad hoc 
mode. The SSID for all stations in a single ad hoc network must be 
the same.  
−  Network Connection: Ad Hoc.  
−  Power Saving: Power saving mode is not currently supported in an ad 
hoc network. 
−  Turbo Mode: All stations participating in the ad hoc network must 
have the same rate setting.  
−  Locally Administered Address: This field defines the locally 
administered MAC address (LAA). To enter a value in the address 
field, the check box needs to be selected.  
2.  You can optionally set up security features, but it is not typically a 
requirement because the duration of the ad hoc network tends to be 
limited. Currently, shared key security is supported in ad hoc mode. 
Future D-Link software implementations will provide unique key support. 

5-15 
3.  In ad hoc mode, a station scans the air for an existing BSS. If no BSS is 
found, the station establishes a BSS for other stations to join. When other 
stations scan the air and find an established BSS in place, they join that 
BSS to form an ad hoc network. If a specific set of stations requires ad 
hoc network connectivity, it is recommended to have one station establish 
a BSS first before configuring the remaining stations. This prevents the 
scenario of several stations trying to form a BSS at the same time, which 
can result in multiple singular BSSs being established, rather than a 
single BSS with multiple stations. 
TCP/IP Setup 
After configuring the D-Link DWL-A650 Wireless Network Adapter through 
the Network Control Panel, the TCP/IP address for the network device needs 
to be configured.  
1.  From the Start menu, choose Programs > Accessories > 
Communications > Network Connections. Find the “Local Area 
Connection” that is associated with the D-Link DWL-A650 Wireless 
Network Adapter. Right-click that connection and click Properties. 

5-16 
2.  Select “Internet Protocol (TCP/IP)” and click Properties. Click “Use the 
following IP address” and input an IP address and Subnet mask. 
Depending on the type of network the station connects to, Gateway and 
DNS Configuration information can also be required. IP configuration 
information (DHCP or assigned IP address, Gateway and DNS server IP 
addresses) is usually obtained from the corporate IT staff. For a simple 
demonstration, the station is assigned a static IP address. Click OK in 
both “Internet Protocol (TCP/IP) Properties” and “Local Area Connection 
Properties” to complete the IP configuration. 

5-17 
3.  Choose Start > Programs > Accessories > Command Prompt to open a 
command prompt window. Type “ipconfig” to determine if the TCP/IP 
configuration has taken effect. To test IP connectivity in ad hoc or 
infrastructure mode, use the “ping <IP address>” command. When a 
TCP/IP connection is established, the LinkMon utility (see Chapter 7) can 
be used to monitor the operating status of D-Link DWL-A650 Wireless 
Network Adapter. 

5-18 
4.  To map the drive on another machine to your computer, from the Start 
menu, choose My Computer and right-click to select “Map Network 
Drive….” 

5-19 
5.  Assign the drive letter that maps to the network-shared folder and specify 
the shared folder information. Click Finish to map the drive. 
6.  After mapping the drive, you can perform file transfers, video streaming, 
and all other network data transfers that are normally performed with 
wired 10/100 Ethernet connections. 

5-20 
Windows XP Wireless Network Configuration 
Aside from using the Network Control Panel (NCP) to configure the D-Link 
DWL-A650 Wireless Network Adapter, Windows XP provides zero-
configuration functionality that automatically tries to connect the STA to 
available wireless networks in the following order: 
a.  Infrastructure mode with valid WEP keys 
b.  Infrastructure mode with unauthenticated access for stations without 
WEP keys 
c.  Ad hoc mode 
To configure wireless network settings through the Windows XP user 
interface, open Network Connections from Control Panel. Right-click the 
Local Area Network Connection icon (pertinent to D-Link DWL-A650 Wireless 
Network Adapter), click Enable to enable the device first, and then click 
Properties. On the Wireless Networks tab, select the “Use Windows to 
configure my wireless network settings” check box to enable automatic 
wireless network configuration. Follow Section “Infrastructure Mode” on page 
5-12 or Section “Ad Hoc Mode” on page 5-13 to set up the station to connect 
to an infrastructure or ad hoc network. 
If you want to use non-default settings for power saving and turbo mode, you 
should set those parameters through the NCP method described in Section 
“Device Configuration” on page 5-10. Then use Wireless Networks tabs to 
select network name, network type, and encryption keys. 

5-21 
Note that you can disable automatic wireless network configuration, and 
revert back to using D-Link NCP configuration settings, by clearing the “Use 
Windows to configure my wireless network settings” check box. 

5-22 
Infrastructure Mode 
To set up automatic wireless network configuration to connect to an existing 
Access Point (infrastructure network): 
1.  Click the network name under “Available networks” in the Wireless 
Networks tab, and click Configure. You can update the list of available 
networks that are within range of your computer by clicking Refresh 
under Available Networks.  

5-23 
2.  If the network requires WEP, then the “Data encryption (WEP enabled)” 
check box is selected by default in Wireless Network Properties. Select 
the “The key is provided for me automatically” check box if the WEP key 
is automatically provided for you. The driver will then use the Default 
Encryption key from the current D-Link NCP configuration profile 
irrespective of the network name. You may choose to enter the WEP key 
by clearing this check box and manually entering the network key and 
key length. Note that the key format must be hexadecimal digits and the 
key length is limited to 104-bit in Windows XP, as opposed to 128-bit key 
supported by D-Link NDIS driver in the NCP configuration interface. If the 
network that you are connecting to requires 128-bit WEP key, then it is 
recommended that you disable Windows XP automatic wireless network 
configuration and use D-Link NCP configuration instead. 

5-24 
Ad hoc mode 
To connect to an existing computer-to-computer (ad hoc) network: 
1.  Click the ad hoc network name under “Available networks” in the 
Wireless Networks tab, and click Configure. 

5-25 
2.  In Wireless Network Properties, the “This is a computer-to-computer (ad 
hoc) network; wireless access points are not used” check box is selected 
by default. You may choose to enable WEP by selecting the “Data 
encryption (WEP enabled)” check box and the “Network Authentication 
(Shared mode)” check box. Select the “The key is provided for me 
automatically” check box if the shared key is automatically provided for 
you. The driver will then use the Default Encryption key from the current 
D-Link NCP configuration profile irrespective of the network name. 
You may choose to enter the shared key by clearing this check box and 
enter the key and key length manually. Note that the key format must be 
hexadecimal digits and the key length is limited to 104-bit in Windows XP 
as opposed to 128-bit key supported by D-Link NDIS driver in the NCP 
configuration interface. If the network that you are connecting to requires 
128-bit WEP key then it is recommended that you disable Windows XP 
automatic wireless network configuration and use D-Link NCP 
configuration instead. 

5-26 
3.  If you want to connect to an ad hoc network, but both ad hoc and 
infrastructure networks are within range of your computer, then click 
Advanced in the Wireless Networks tab and then select “Computer-to-
computer (ad hoc) networks only”. Note that if you want the station to 
start its own ad hoc network, the “Computer-to-computer (ad hoc) 
networks only” option should be selected. There should be no network 
active from the preferred list and the “Automatically connect to non-
preferred networks” check box should be cleared. 
Connect to an Available Wireless Network 
When there is more than one available network detected by Windows XP, the 
OS will prompt the user to select and connect to a preferred network. 
To connect to an available wireless network, right-click the network 
connection icon in the notification area, and then click “View Available 
Wireless Networks”.  

5-27 
In Connect to Wireless Network, under “Available networks”, select the 
wireless network that you want to connect to. If a network key is required and 
is automatically provided for you, then leave “Network key” blank. If the 
network key is not automatically provided for you, then type the key in 
“Network key”. Click Connect to establish the network connection. 

5-28 
If you are either unable to make a connection to the wireless network that 
you selected or need to configure additional wireless network connection 
settings, click Advanced in Connect to Wireless Network, and the Wireless 
Networks tab will appear. 

5-29 
You can configure a new wireless network connection by clicking Add, and 
specifying the network name (SSID) in Wireless Network Properties, and the 
wireless network key settings, if needed. If the network connection that you 
are configuring is an ad hoc network, then select “This is a computer-to-
computer (ad hoc) network; wireless access points are not used” check box. 
The network will be added under “Preferred networks” in the Wireless 
Networks tab.  

5-30 
You can change the order of the preferred networks by selecting the wireless 
network that you want to reposition on the list, and then clicking Move up or 
Move down. You can change the wireless network connection settings of a 
preferred network by selecting the wireless network, clicking Properties, and 
then changing the settings as needed. To remove a wireless network from 
the list of preferred networks, select the wireless network that you want to 
remove, and then click Remove.  

5-31 
If a network is not defined in the preferred networks list, but you know it is 
available and you want to automatically connect to it, then click Advanced in 
the Wireless Networks tab, and select the “Automatically connect to non-
preferred networks” check box.  

5-32 

6-1 
6 
Windows NT 4.0 
Driver Installation and TCP/IP Setup 
Windows NT 4.0 does not support Plug-and-plug. Therefore, the D-Link NDIS 
driver installation uses an approach that is different from the installation used 
in other Operating Systems. In order to install D-Link DWL-A650 Wireless 
Network Adapter in Windows NT 4.0 with Service Pack 6, a PC Card utility 
called CardWizard is used. If your computer system does not have 
CardWizard utility pre-loaded, then you can purchase it from SystemSoft 
Corporation (www.systemsoft.com) or you can download a 14-day evaluation 
copy from ftp://www.systemsoft.com/pub/Wn51tren.exe. Note that 
CardWizard requires Windows NT 4.0 Build 1381 (Service Pack 6) installed 
in order to function correctly. Please install Service Pack 6 if your Windows 
NT 4.0 is not updated. 
After CardWizard utility is loaded, insert the D-Link DWL-A650 Wireless 
Network Adapter into a 32-bit CardBus slot, and follow these steps to install 
the NDIS driver: 
1.  CardWizard will detect the insertion of the D-Link CardBus card and show 
the following screen. Click Correct to continue. 

6-2 
2.  Click OK to continue. 
3.  Windows NT 4.0 Network Properties windows displays. Click Add to 
continue. 

6-3 
4.  Click Have Disk. 
5.  Manually enter the location of where the D-Link NDIS 4.0 driver is 
located. For example, D:\NDIS\BIN\PRODUCTION\NDIS4. Click OK to 
continue. 

6-4 

6-5 
6.  Make sure D-Link DWL-A650 Wireless Network Adapter is selected. 
Click OK to continue. 
7.  Set Map Registers, QoS, and Transmit Power Control to default values 
and click OK. 

6-6 
8.  Windows NT 4.0 binds TCP/IP protocol to D-Link DWL-A650 Wireless 
Network Adapters and TCP/IP properties have to be entered. Depending 
on the type of network the station connects to, Gateway and DNS 
Configuration information may also be required. IP configuration 
information (DHCP or assigned IP address, Gateway and DNS server IP 
addresses) is usually obtained from the corporate IT staff. For a simple 
demonstration, the station is assigned a static IP address. Choose 
“Specify an IP address” and enter an IP address and subnet mask. 
Assigning an IP address and subnet mask allows the station to interact 
with the AP or other stations in the same IP subnet. Click OK to complete 
the TCP/IP configuration. 

6-7 
9.  Restart the system for the changes to take effect. 
Device Configuration 
Configuration of the D-Link DWL-A650 Wireless Network Adapter can be 
done through the D-Link NIC Configuration Control Panel applet provided by 
D-Link. Similar to Windows 2000, the device can be set to work in one of two 
modes, either infrastructure mode or ad hoc mode. See Section “Device 
Configuration” beginning on page 2-17 for more details on these network 
connection types. 
Start D-Link NIC Configuration utility from the Control Panel. 

6-8 
Select one of the configuration(s) under the configuration list and click Modify 
or click New, and follow the Section “Infrastructure Mode” on page 6-8 and 
Section “Ad Hoc Mode” on page 6-11 to set up the station to work in 
infrastructure mode and ad hoc mode. 
Infrastructure Mode 
This section defines the process of configuring an D-Link DWL-A650 
Wireless Network Adapter in infrastructure mode. Refer to Section “Device 
Configuration” beginning on page 2-17 for detailed descriptions of each 
option in the Network Configuration Settings.  
1.  Under the “General” tab, make sure the “Locally Administered Address” 
checkbox is unchecked. Use the following information as a guideline to 
choose the values of each field in the configuration window: 
−  Configuration Name: This field identifies the configuration. This name 
must be unique. Configuration names are case insensitive. For 
example, “AP”. 

6-9 
−  Network Name (SSID): This is the name of the IEEE 802.11a 
wireless network. For example, “D-Link_AP”. This field has a 
maximum limit of 32 characters. If this field is left blank, the STA will 
connect to the AP with the best signal strength. 
−  Network Connection: AP (Infrastructure). 
−  Power Saving: This field allows the configuration of power 
management options. The options are Off, Normal, and Maximum.  
−  Turbo Mode: This field enables or disables D-Link Turbo mode. 

6-10 
Usually, infrastructure mode is used in an enterprise environment where 
APs are installed and maintained by corporate IT staff. Much of the data 
in the enterprise network is confidential. It is important to configure 
security to make sure only stations with appropriate keys can receive 
sensitive data. The D-Link DWL-A650 Wireless Network Adapter and 
NDIS driver support key lengths of 40-bits, 104-bits and 128-bits. 
Typically, the appropriate encryption and decryption keys will be supplied 
by the corporate IT staff. 

6-11 
Ad Hoc Mode 
This section defines the process of configuring an D-Link DWL-A650 
Wireless Network Adapter in ad hoc or IBSS mode. Refer to Section “Ad Hoc 
Mode” on page 2-23 for detail descriptions of ad hoc operation. 
1.  Similar to the set up of AP Infrastructure mode described in the previous 
section, ad hoc mode is also configured by changing the options in 
“Network Configuration Settings” window. Use the following information 
as a guideline to choose the values of each field in the configuration 
window:  
−  Configuration Name: This field identifies the configuration. This name 
must be unique. Configuration names are case insensitive. For 
example, “Ad Hoc”. 
−  Network Name (SSID): A Network Name is mandatory for ad hoc 
mode. The SSID for all stations in a single ad hoc network must be 
the same. 
−  Network Connection: Ad Hoc. 
−  Power Saving: Power saving mode is not currently supported in an ad 
hoc network. 
−  Turbo Mode: All stations participating in the ad hoc network must 
have the same rate setting. 
−  Locally Administered Address: This field defines the locally 
administered MAC address (LAA). To enter a value in the address 
field, the check box needs to be selected.  

6-12 
2.  You may optionally set up security features, but it is not typically a 
requirement, since the duration of the ad hoc network tends to be limited. 
Currently, only shared key security is supported in ad hoc mode. Future 
D-Link software implementations will provide unique key support. 

6-13 
3.  In ad hoc mode, a station will scan the air for an existing BSS. If no BSS 
is found, the station will establish a BSS for other stations to join. When 
other stations scan the air and find an established BSS in place, they join 
that BSS to form an ad hoc network. If a specific set of stations requires 
ad hoc network connectivity, it is recommended to have one station 
establish a BSS first before configuring the remaining stations. This will 
prevent the scenario of several stations trying to form a BSS at the same 
time, which may result in multiple singular BSSs being established rather 
than a single BSS with multiple stations. 
Verify Connection 
You may use LinkMon utility to monitor the operating status of D-Link DWL-
A650 Wireless Network Adapter once the STA is connected. Please refer to 
Chapter 7 for descriptions of LinkMon utility. If the STA is configured properly 
then you will be able to perform ping test as well as other network 
applications that a wired Ethernet device can perform. 
1.  Choose Start > Programs > Accessories > Command Prompt to open the 
command prompt window. Type “ipconfig” to determine if the TCP/IP 
configuration has taken effect. To test IP connectivity in ad hoc or 
infrastructure mode, use the “ping <ipaddress>” command. 

6-14 
2.  To map the drive on another machine to your computer, right-click “My 
Computer” and click “Map Network Drive….”  
3.  Specify the path of a network-shared folder. 
4.  After mapping the drive, you can perform file transfers, video streaming, 
and all other network data transfers that are normally performed with 
wired 10/100 Ethernet connections. 

6-15 
Driver Uninstallation 
This section provides uninstallation procedures for removing the D-Link NDIS 
driver from the system. 
1.  To remove the NDIS driver from the system, go to Control Panel and 
open Network properties. 

6-16 
2.  Under the Adapters tab, choose D-Link DWL-A650 Wireless Network 
Adapter and click Remove. 
3.  Click OK to confirm the removal of the D-Link DWL-A650 Wireless 
Network Adapter. 

6-17 
4.  D-Link DWL-A650 Wireless Network Adapter is no longer listed under the 
Adapters tab. Click Close to continue. 
5.  Restart the system to complete the un-installation of D-Link NDIS 4.0 
driver.  

7-1 
7 
LinkMon 
Installation 
LinkMon is a Graphical User Interface (GUI) program that provides detailed 
operational status and statistics for the D-Link DWL-A650 Wireless Network 
Adapter. The LinkMon executable file, linkmon.exe, is included on the D-Link 
Release Version Error! Reference source not found. CD, and is in the folder 
\ndis\bin\production\. Copy this file from the CD to a local drive for execution.  
Since Windows 98 SE does not have native support for WMI, which is 
required to make LinkMon work correctly, an upgrade from Microsoft is 
needed. Use the procedures described in the following section to acquire and 
install the necessary WMI module from Microsoft. This is only required for 
Windows 98 SE installations. 
1.  Download WMI installer from Microsoft (wmi9x.exe) and save it to your 
hard disk. 
2.  Execute WMI installer by double-clicking wmi9x.exe. 

7-2 

7-3 
3.  Click Next to continue. 
4.  Click “I accept this agreement” and then click Next to continue. 

7-4 
5.  Click Next to continue. 
6.  The installer now installs files to the SYSTEM directory. 
7.  The system must be rebooted for the WMI installation files to become 
effective. When the system completes the rebooting process, launch 
LinkMon. 

7-5 
Features 
There are five tabs in LinkMon used to display STA information: 
 
General tab 
 
Frame Statistics tab 
 
Transmit Retries tab 
 
Station tab 
 
Driver tab 
Under the General tab of the LinkMon program property sheet is general 
information about the program and its operations. 
Under the Frame Statistics tab is statistical information showing the number 
of frames being sent and received, retry count on frames sent, frame 
checksum error counts for received frames, and receive signal strength 
indicator (RSSI) information. These fields are described in the Station 
Programmer’s Guide under Appendix A as OIDs. LinkMon supports most of 
the OIDs listed in that section. 

7-6 
Under the Transmit Retries tab is detailed transmit retry statistical information 
for transmitted frames. 

7-7 
Under the Station tab is detailed BSS information including SSID, BSSID, 
association status, operating channel frequency, and information about 
scanned APs. 
Under the Driver tab is statistical data pertaining to NDIS driver operation.  

7-8 
The Action menu enables a NDIS driver unloading and reloading, and 
network interface card (NIC) reset. Note that driver unload option is not 
available in Windows Me, Windows 98SE, and Windows NT 4.0. NIC reset is 
also not available in Windows NT 4.0. 
On the Options menu, choose Settings…. 

7-9 
Under the Display tab, you can select the data display modes of “Cumulative” 
or “Relative.” “Cumulative” mode displays statistical LinkMon data collected 
from the beginning of driver load. “Relative” mode displays differences in the 
statistical data since the last update. 
Under the Log File tab, the logging function can be enabled to log to a file the 
statistical information collected by the LinkMon utility, for later reference or 
post processing by an application such as Microsoft Excel. 

8-1 
8 
RFSilent 
This chapter describes the RFSilent application that allows you to enable or 
disable the RF Signal (radio) on all D-Link STA Reference Designs. The 
RFSilent is a Windows-based application that appears in the right-hand 
corner of your Windows taskbar. 
System Requirements 
The RFSilent application communicates with most Windows applications 
using Windows Management Instrumentation (WMI). For Windows NT 4.0, 
RFSilent communicates through the Input and Output Control (IOCTL) 
mechanism.  
If you are using Windows 98SE, WMI does not come pre-installed and you 
must install it prior to using RFSilent. Refer to the following procedure to 
acquire and install the required WMI module from Microsoft. 
Windows 98SE Environment 
If you want to use the RFSilent application in a Windows 98SE environment, 
you must install WMI. 
Follow these steps to install WMI: 
1.  Download the WMI installer (wmi9x.exe) from Microsoft and save it to 
your hard disk. 
2.  Execute the WMI Installer by double-clicking wmi9x.exe. 
3.  Click Next to continue. 

8-2 
4.  Click “I accept this agreement” and then click Next to continue. 
5.  Click Next to continue. 
The installer now copies the necessary files to the SYSTEM directory. 
6.  Reboot the system. 
RFSilent Setup 
The RFSilent application allows you to enable or disable D-Link STA 
References Designs. You can enable or disable the RFSilent application 
through user-defined settings. Refer to a description of driver parameters in 
the AP Programmer’s Reference Guide. 
Operation 
The RFSilent application is a Windows-based application that, once enabled, 
appears as an icon (RF) in the right-hand corner of your Windows taskbar 
(see Figure 8-1). You can automatically launch RFSilent at system boot-up 
by entering a shortcut statement in the Startup folder. 
Figure 8-1. RFSilent Icon 
Position your cursor over the RF Icon in your toolbar and use your right or left 
mouse button to display the RFSilent application selections (see Figure 8-2). 
The radio button on the side of menu selections indicates the current state of 
the RFSilent application. 
Figure 8-2.  RFSilent Menu Selections 
Refer to Table 8-1 for a description of the RFSilent menu selections. 

8-3 
Table 8-1.  RFSilent Menu Descriptions 
RFSilent Menu Item  Descriptions 
Disable RF Signal  Use this selection to 
disable D-Link STA 
Reference Design. 
Enable RF Signal  Use this selection to enable 
D-Link STA Reference 
Design. 
About  Displays copyright, version 
information, and the build 
date for the RFSilent 
application. 
Exit  Quits the RFSilent 
application. 

9-1 
9 
Troubleshooting 
This chapter provides solutions to common problems that usually occur 
during the installation and operation of the D-Link DWL-A650 Wireless 
Network Adapter. Read the following descriptions if you are having problems. 
If you cannot find an answer here, please contact an D-Link field application 
engineer for assistance. 
1.  My computer does not recognize the D-Link CardBus reference 
card. 
Make sure the CardBus card is properly inserted into a 32-bit CardBus 
slot. If Windows does not detect the hardware upon insertion of the card, 
the system could have a previous D-Link NDIS driver installed. Remove 
the old driver and try again. 
2.  The D-Link DWL-A650 Wireless Network Adapter does not work 
properly after the driver is installed. 
Re-insert the CardBus card into the slot. A beep should be heard if the 
adapter is properly inserted. Go to Device Manager and make sure the D-
Link DWL-A650 Wireless Network Adapter exists under the network 
adapters device node. If you see the yellow exclamation mark then there 
are conflicting resources. In this case, make sure the computer system 
has a free IRQ and make sure you have installed the proper driver. 
Uninstall the driver, restart the system, and repeat the driver installation 
steps if necessary. 
3. Stations cannot associate in ad hoc mode. 
Make sure the same service set identifier is specified for all stations that 
need to join the same ad hoc network. Set up one station to establish a 
BSS and wait briefly before setting up other stations. This prevents 
several stations from trying to establish a BSS at the same time, which 
can result in multiple singular BSSs being established, rather than a 
single BSS with multiple stations associated to it. 

9-2 
4.  The station cannot access the Internet in the infrastructure 
configuration. 
Make sure the station is associated and joined with the AP. If Wired 
Equivalent Privacy (WEP) security is enabled on the AP, the station must 
have the proper WEP keys specified. Also make sure TCP/IP properties 
are correctly configured. 

A 
Channel and Data Rate 
Selection 
This section provides basic information for selecting fixed data rate and 
channel frequency in the NDIS driver. This becomes necessary if you want to 
test the D-Link Wireless Network Adapter at a specific channel with the rate 
adaptation controls turned off. 
To select channel frequency and data rate in the Windows environment with 
NDIS driver installed: 
1.  Choose Start > Run, and type “regedit” to open Registry Editor. 
2.  For Windows 2000 and Windows XP, locate the following registry key, 
and select Find from the Edit menu: 
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\ 
For Windows 98SE and Windows Me, locate the following registry key, 
and select Find from the Edit menu: 
HKEY_LOCAL_MACHINE\System\CurrentControlSet\ 
3.  Type “clist” and click Find Next to find the registry key. Note that if you 
have multiple instances of the D-Link Wireless Network Adapter installed, 
for example, the NDIS driver is installed more than once, then you will 
need to click Find Next to locate the current instance of the device that is 
in use. 

4.  Double-click on clist and enter the channel number in the “Value Data” 
field. Enter the IEEE channel number from the following table. For 
example, enter 40 to select channel frequency of 5.20 GHz. The channel 
numbers follow the IEEE format where: 
Channel Frequency (in GHz) = 5 + 0.005 * (Channel Number) 
Channel Number  Channel Frequency Regulator Domain 
26  5.13 GHz  N/A (not calibrated) 
28  5.14 GHz  N/A (not calibrated) 
30  5.15 GHz  N/A (not calibrated) 
32  5.16 GHz  N/A (not calibrated) 
34 5.17 GHz TELEC 
36 5.18 GHz FCC 
38 5.19 GHz TELEC 
40 5.20 GHz FCC 
42 5.21 GHz TELEC 
44 5.22 GHz FCC 
46 5.23 GHz TELEC 
48 5.24 GHz FCC 
50  5.25 GHz  N/A (not calibrated) 
52 5.26 GHz FCC 
54  5.27 GHz  N/A (not calibrated) 
56 5.28 GHz FCC 
58  5.29 GHz  N/A (not calibrated) 
60 5.30 GHz FCC 
62  5.31 GHz  N/A (not calibrated) 
64 5.32 GHz FCC 
66  5.33 GHz  N/A (not calibrated) 
68  5.34 GHz  N/A (not calibrated) 
70  5.35 GHz  N/A (not calibrated) 
72  5.36 GHz  N/A (not calibrated) 
74  5.37 GHz  N/A (not calibrated) 
76  5.38 GHz  N/A (not calibrated) 
78  5.39 GHz  N/A (not calibrated) 
80  5.40 GHz  N/A (not calibrated) 

Channel Number  Channel Frequency Regulator Domain 
82  5.41 GHz  N/A (not calibrated) 
84  5.42 GHz  N/A (not calibrated) 
86  5.43 GHz  N/A (not calibrated) 
5.  To select the fixed data rate at which you want the station to transmit, 
double-click on rateCtrlEnable from the same registry key location where 
clist resides, and enter 0 to disable rate adaptation. Double-click on 
TransmitRate and enter the value specified in the following table to select 
the actual data rate. For example, enter 3 for 18 Mbps.  
Rate Number  Data Rate 
0 6 Mbps 
1 9 Mbps 
2 12 Mbps 
3 18 Mbps 
4 24 Mbps 
5 36 Mbps 
6 48 Mbps 
7 54 Mbps 
6.  For the changes to take effect: 
−  If you are running Windows 98SE or Windows Me, close Register 
Editor and restart the systems.  
−  If you are running Windows 2000 or Windows XP, unload and load 
the driver from LinkMon. 
7.  To undo these changes and go back to normal operation where the 
channel and data rate are dynamically set, change rateCtrlEnable to 1 
and clear the clist value.