D Link 2001060014-1 Wireless USB Adapter Card User Manual User Guide for DW 125
D Link Corporation Wireless USB Adapter Card User Guide for DW 125
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users manual
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D-Link DW-125, DW-120
Wireless LAN USB Adapter
User’s Guide
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Introduction
This User Guide is to guide you to install a Wireless LAN designed for both large and small
business and SOHO environments and let you share a local printer and files, access
internet, and roam about different working places. The attached drivers and utilities support
for Windows 95 (OSR2), Windows 98, and Windows 2000, NT4.0 and Windows
Millennium.
Package Contents
D-Link DW-125 Wireless LAN USB Adapter
D-Link Wireless LAN CD-ROM with drivers and utilities
User’s Guide
Quick Start Guide
Warranty Card
Planning your Wireless LAN
There are two usage modes for Wireless LAN, Ad-hoc mode and Infrastructure mode.
Please review your need and build your Wireless LAN.
Ad-hoc Networking
Ad-hoc network also is called Peer-to-Peer network. Without Access Point, notebook users
with D-Link DW-125 Wireless LAN USB Adapter can build Ad-hoc Peer-to-Peer wireless
networks to share files with each other, share a public office printer and other peripheral
resources, even access the Internet via a modem.
Infrastructure Networking
802.11b-compatible Access Point is a bridge or routers connecting to the wired Ethernet
network and wireless network. Through the deployment of Access Point, wireless LAN can
be extended to the reach of a wired network. Therefore, a notebook user with D-Link
DW-125 Wireless LAN USB Adapter can access to fixed local network resources.
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Installation
Installation for Windows 98SE and Windows 2000
Before installing the driver, you will need a copy of the operating system installation media,
usually a CD supplied with your computer or operating system.
On Windows 98 systems, the installation files are sometimes archived on the hard disk in
C:\WINDOWS\OPTIONS\CABS. On Windows 2000 systems, the system may prompt you
to load operating system files from the Windows 2000 installation disk. Installation under
Windows 95 is identical to the procedure given above for Windows 98 and Windows 2000.
The Setup program also installs Configuration Utility in the DW-125 Wireless LAN USB
Adapter in the Program directory. This configuration utility can help you to understand and
maintain your Wireless LAN.
Install Driver
Step 1: Turn on your computer.
Step 2: Insert the D-Link DW-125 Wireless LAN USB Adapter into the USB port. Insert this
adapter firmly without forcing until it seats snugly.
Step 3: Windows finds a new hardware shown Intersil PRISM Wireless LAN USB Adapter
and asks for the driver of USB Adapter. The driver installation wizard guides you through
the steps standard for your operating system.
Step 4: You will be asked to supply CDs or directory path information for the driver. This
driver shall be located in the following directory.
D:\Driver\ (if D:\ is your CD-ROM drive)
Step 5: Windows finds the driver described as Intersil PRISM Wireless LAN USB Adapter.
Follow the directions of Windows dialog boxes to complete the driver installation. After
completing the installation, Windows dialog will display Systems Setting Change and ask to
restart the notebook. Click “Yes” to reboot the computer.
Install Configuration Utility
1. Restart the computer and ensure D-Link Wireless LAN Configuration Utility CD in the
CD-ROM drive.
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You can run the program manually by selecting Run from the Start menu and running
SETUP.EXE from the CD-ROM drive.
D:\SETUP.EXE (if D:\ is your CD-ROM drive)
2. On the
Intersil Prism Wireless LAN USB Adapter – Installation screen, click next to
start software installation. Read the information in the Welcome dialog box and click
“Next”. Then, click ““Yes”” if you accept the Software License Agreement.
3. Enter the name of the Wireless LAN Service Set of the wireless network (SSID) to
which your computer will connect. The name you enter here must match exactly the
name assigned to the access point. Characters, capitalization, and spacing must be
identical.
NOTE: If the access point you wish to associate with has encryption active, you must
also enable encryption on the wireless client. Click Encryption in the Configuration
Utilities after reboot to go to screens where you can enable and configure encryption.
You must set the wireless client for the same Encryption algorithm and Key values as
the access point it will associate. Refer to the Advanced Configuration section for more
details about configuring encryption
4. Select which network mode is suitable for your Wireless LAN. Infrastructure Mode is
default selection. This setting can be changed at any time after installation completion.
5. Accept the default program folder or select where the SETUP.exe stores the
Configuration Utility.
6. Select ““Yes”, I want to restart my computer now”. Reboot your computer by clicking
Finish.
Operation
Orienting the Antenna
The antenna is attached to the end of the USB Adapter. For best use of the antenna:
Keep the area around the antenna clear from materials that could block or obstruct
radio transmission, such as metal objects, electronic devices, cordless telephones, and
microwave oven.
If necessary, move your notebook computer a few inches to find a better signal.
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Environmental condition varies with users’ location, a difference of one or two inches
can mean the difference between a strong and a weak signal. Even a slight change in
PC orientation can improve a wireless connection.
If you have installed the Configuration Utility, you may use the Signal Strength display
in the Link Info to determine the best location and orientation for a wireless network
connection.
LED Indication
The yellow LED of Wireless LAN USB Adapter performs identical functions when indicating
the operational status of the adapter.
Advanced Configuration
Configuration
Mode (Network Mode)
1. Ad-Hoc: The Ad-Hoc network is also known as a peer-to-peer network. An Ad-Hoc
networking does not need Access Point. Instead, the Ad-Hoc network is a loose
association of wireless computers that can communicate with each other using
Wireless LAN USB Adapter in Ad-Hoc Mode
2. Infrastructure: In a wireless infrastructure network, wireless stations communicate
with an Access Point to connect to a wired network. An infrastructure network also can
consist of multiple Access Points. This can extend the coverage area of wireless
network. In this configuration, the wireless network consists of cells. Each cell is a
single Access Point that has different frequency channel to prevent from interfering
each other. A wireless station can move from one Access Point to next without losing
the network connection.
SSID
The SSID is the name of wireless network for Ad-Hoc or Infrastructure mode. To add a
Wireless LAN USB Adapter to an existing wireless network, configure SSID to match the
name of the wireless network
Tx Rate
The Fixed 1, 2, 5.5, 11Mb/s or Fully Auto transmit rates can be selected for Wireless LAN
USB Adapter. Basically, the Fully Auto setting allows the USB Adapter to automatically
switch to a higher Tx rate for better throughput in most environment. A fixed rate setting
does not allow USB Adapter to re-transmit at a lower rate even as a result of many
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retransmissions.
PS Mode (Power Saving Mode)
Enabling power saving mode can extend the battery life of the mobile notebook by allowing
the USB Adapter to sleep, minimizing the power consumption.
Channel
D-Link DW-125 Wireless LAN USB Adapter supports up to 14 channels. However, the
number of available channels varies in different countries and regions. The Access Point
must be set to a channel. To avoid radio interference, adjacent Access Point within the
same infrastructure network (the same SSID) should set to different channel. The channels
of Access Points must be at least five channels apart, while the Wireless LAN USB
Adapters automatically use the same channels as the Access Point and roams between
APs in the same wireless network.
Encryption
The Wireless LAN USB Adapter uses WEP encryption to protect wireless data
communications.
Encryption Selection
WEP uses a combination of 40-bit keys or 128-bit keys to provide security for every data
transmission. In order to decode a data transmission, an identical WEP key must be used
by each wireless client on the network. Choose Enable or Disable to activate the security of
wireless network.
Create with Passphrase
The WEP keys can be generated from a user-defined passphrase. The WEP text string is a
maximum of 32 characters.
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Regulatory Compliance Information
FCC Notice
This device has been tested and found to comply with the limits for a Class A digital device
pursuant to Part 15 of the Federal Communications Commissions Rules and Regulation.
These limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance
with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own expense.
However, there is no guarantee that interference will not occur in a particular installation. If
the equipment does cause harmful interference to radio or television reception, which can
be determined by turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
Re-orient 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 which the receiver
is connected.
Consult the dealer or an experienced radio/TV technician for help.
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.
FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with minimum distance
20cm between the radiator and your body.
CAUTION
Any change or modifications not expressly approved by the grantee of this device could
void the user' authority to operate the equipment.
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European Notice
Equipment with CE marking complies with the R&TTE Directive (1999/5/EC), EMC
Directive (89/336/EEC) and the Low Voltage Directive (73/23/EEC) issued by the European
Community. Compliance with these directives implies conformity to the following European
Norms or Regulations (in parentheses are the equivalent international standards and
regulations):
EN 55022 (CISPR 22) – Electromagnetic Interference
EN 50082-1 (IEC 801-2, IEC 801-3, IEC 802-4) – Electromagnetic Immunity
EN 60950 (IEC 60950) – Product Safety
ETS 300 326 – Technical characteristics and test conditions for data transmission
equipment operating in the 2.4GHz ISM band and using spread spectrum modulation
techniques
ETS 300 826 – Electromagnetic Compatibility (EMC) standard for 2.4GHz wide band
transmission systems and High Performance Local Area Network (HIPERLAN)
equipment
This product may be used in the following EU and EFTA countries: Austria, Belgium,
Denmark, Finland, Germany, Greece, Iceland, Ireland, Italy, Liechtenstein, Luxembourg,
Netherlands, Norway, Portugal, Sweden, Switzerland and United Kingdom. Products not
marked with “Not for use in France” may be used in France.
Specifications
Radio Technology IEEE 802.11b Direct Sequence Spread Spectrum
Operating Frequency 2400-2483.5MHz ISM band
Modulation Schemes DQPSK, DBPSK and CCK
Channel Available 11 channels for United States
13 channels for Europe
14 channels for Japan
Data Rate 11Mbps with fall back rates of 5.5, 2 and 1Mbps
Media Access Protocol CSMA/CA with ACK
RF Power 15dBm
Antenna Gain 0dBi
Antenna Type Integrated Microstrip dual diversity antennas
Operating Voltage 5VDC
Interface USB 1.1
Range Coverage Indoor: 35 - 100 meters (depends on environment)
Outdoor: 100 - 300 meters (depends on environment)
LED Indicator Power & Link status