Scientific Atlanta Dpw939 Users Manual User's Guide WebSTAR USB Wireless LAN Adapter

DPW939 to the manual 3ae89297-27b1-4b28-a681-8869485a9529

2015-01-21

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WebSTAR Model DPW939 USB
Wireless LAN Adapter
User’s Guide

WebSTAR™ Model DPW939™ USB Wireless LAN
Adapter User’s Guide
Introduction
Thank you for choosing the WebSTAR™ Model DPW939™ USB Wireless local area network (LAN) Adapter
(DPW939)! The WebSTAR DPW939 USB Wireless LAN Adapter allows you to experience the speed and
convenience of wireless networking. The WebSTAR DPW939 USB Wireless LAN Adapter is a compact easy-toinstall and use USB wireless LAN adapter. Implementing the new IEEE 802.11g standard for wireless local area
network (WLAN), the DPW939 is capable of up to 54 Mbps data transmission rate. This capability makes the
DPW939 a cost-effective solution for both home and small office wireless networking. The DPW939 is also
backward compatible with the earlier IEEE 802.11b standard thereby allowing seamless interfacing of both
wireless LAN (WLAN) standards.
The DPW939 supports several wireless network configurations including Infrastructure and Ad-hoc networks. This
support gives you flexibility and versatility for your existing or future wireless network configurations. To provide
efficient security to your wireless communication, the DPW939 comes with a 64-bit/128-bit Wired Equivalent
Privacy (WEP) encryption and wired fidelity (WiFi) Protected Access (WPA) features. With these and many more
outstanding features, the DPW939 is sure to keep you ahead in the world of wireless computing.
This guide provides procedures and recommendations for installing, configuring, operating, and troubleshooting
the DPW939 for Internet access and for high-speed wireless networking for your home or office. Refer to the
appropriate section in this guide for the specific information you need for your situation. Contact your Internet
service provider for further assistance.

Benefits and Features
The DPW939 also offers the following additional benefits and features:
•

Facilitates a high-speed wireless Internet connection that energizes your
online experience, and makes sharing files and photos with your family and
friends hassle free

•

Features reliable data transfer rates of up to 54 Mbps

•

Includes secure data transmission using WEP and WiFi Protected Access
encryptions

•

Supports an operating distance of up to 130 ft (40m) indoors and 1000 ft
(310m) outdoors

•

Provides support for both Infrastructure and Ad-hoc networks

•

Utilizes USB power and a compact design for easy placement and use

•

Includes a convenient extension cable with a built-in base

•

Offers Plug and Play operation for uncomplicated set up and installation

•

Features Microsoft Windows 98SE, ME, 2000, and XP compatibility

•

Allows quick and easy access to wireless networks when traveling

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

In This Guide
What’s In the Carton? ....................................................................................................................................3
About the WebSTAR Model DPW939 USB Wireless LAN Adapter..............................................................4
Recommended Network Settings ..................................................................................................................5
Software and Hardware Installation...............................................................................................................7
Monitoring and Configuring the WebSTAR DPW939 USB Wireless LAN Adapter.....................................15
Configuring and Managing Network Location Settings ...............................................................................27
Troubleshooting ...........................................................................................................................................39
Regulation Domain ......................................................................................................................................42
Technical Specifications ..............................................................................................................................43
Glossary.......................................................................................................................................................45
Notices.........................................................................................................................................................47
Regulatory Compliance ...............................................................................................................................48
For Information .............................................................................................................................. Back Page

What’s in the Carton?

What’s In The Carton?
When you receive your WebSTAR DPW939 USB Wireless LAN Adapter, you should inspect the equipment and
accessories to verify that each item is in the carton and that each item is undamaged. The carton contains the
following items:

Package Contents
Verify that the following items are in your WebSTAR DPW939 USB Wireless LAN
Adapter package.
•

WebSTAR DPW939 USB Wireless LAN Adapter

•

USB 2.0 extension cable with base

•

Support CD

Note: Unless otherwise specified, the term “device” in this User’s Guide, refers to
the WebSTAR DPW939 USB Wireless LAN Adapter.
USB 2.0
Extension Cable
with Base

USB WLAN
Adapter
(with USB Cap)

Support CD

T11484

If any of these items are missing or damaged, please contact SciCare Broadband
Services at 1-800-722-2009 for assistance.
Additional cables and other equipment needed for wired or wireless networking
must be purchased separately. Contact your Internet service provider to inquire
about the additional equipment and cables you may need.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

About the WebSTAR Model DPW939 USB Wireless LAN Adapter
This section describes the physical features of the WebSTAR DPW939 USB Wireless LAN Adapter and presents
a detailed description of the LED indicators.

LED Indicators
The WebSTAR DPW939 USB Wireless LAN Adapter has Activity (ACT) and
Power (PWR) LED indicators. Refer to the following illustration and table for LED
function and indications.

LED
ACT
PWR

Status

Indication

Blinking

The device is transmitting or receiving data packets.

Off

There is no wireless data activity.

The device is receiving power from the USB port.

Off

The device is not receiving power from the USB port.
The device may be disconnected or the computer is
OFF.

Recommended Network Settings

Recommended Network Settings
The WebSTAR DPW939 USB Wireless LAN Adapter may be used in both Ad-hoc and Infrastructure network
modes. The following sections describe how the device functions in these network modes.
The WebSTAR DPW939 USB Wireless LAN Adapter connects to one of the
following:
• A wireless device (Ad-hoc network mode)
• An access point (Infrastructure network mode)

Ad-hoc network mode
When in an Ad-hoc network, the WebSTAR DPW939 USB Wireless LAN Adapter
connects to another wireless device. No access point (AP) is present in this
wireless environment. Ad-hoc mode is also referred to as peer-to-peer mode or
an Independent Basic Service Set (IBSS). Ad-hoc is useful for establishing a
network where wireless infrastructure does not exist or where services are not
required.

Infrastructure network mode
When in an Infrastructure network, the wireless network is centered on an access
point (AP) that provides a central link for wireless clients to communicate with
each other or with a wired network. In this configuration, the WebSTAR DPW939
USB Wireless LAN Adapter connects to an AP using a single or multiple Internet
protocol (IP) to establish connection to a wired or wireless LAN.
Note: Determine your network settings before installing the device in order to
take advantage of all its features.

Operating Range
The WebSTAR DPW939 USB Wireless LAN Adapter range is dependent on the
operating environment. Every home or office layout varies in obstacles, barriers,
or wall types that may reflect or absorb radio signals. For example, two 802.11b
devices in an open space may achieve an operating distance of up to 1000
meters, while the same devices may only achieve up to 300 meters of range
when used indoors.
The device automatically adjusts the data rate to maintain an operational
wireless connection. A wireless device that is close to an AP may operate at
higher speeds than a device far from the AP. You can configure the data rates
that a device uses. If you limit the range of data rates available to the WebSTAR
DPW939 USB Wireless LAN Adapter, you may reduce the effective range of the
wireless LAN coverage.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

Site Survey
A site survey utility provided with the WebSTAR DPW939 USB Wireless LAN
Adapter analyzes the installation environment and provides users with
recommendations for equipment and its placement. The optimum placement
differs depending on the device design and specifications. Refer to Locating
Available Wireless Networks, later in this guide for detailed procedures on
using the site survey utility.

Roaming Information
Use the Mobile Manager utility to set up automatic roaming and network
reconfiguration between different locations. Roaming allows you to change your
location and still maintain communication between other devices within range
that have compatible wireless PC cards installed. Roaming among different
access points is controlled automatically to maintain the wireless connectivity at
all times.

Tips on Roaming
• The DPW939 can only roam between APs of the same type.
• All computers with WebSTAR WLAN cards must have the same SSID as the
access points to enable roaming.
• If encryption is enabled, all wireless clients must use the same encryption to
establish connection.
• We strongly recommended that you perform a site survey using the
WebSTAR DPW939 USB Wireless LAN Adapter utility to determine the best
location for each wireless device.

Software and Hardware Installation

Software and Hardware Installation
This section provides information on how to install the software and hardware for the WebSTAR DPW939 USB
Wireless LAN Adapter.

System Requirements
Before installing the WebSTAR DPW939 USB Wireless LAN Adapter, make sure
that your system’s network equipment meets the following requirements:
•

Intel Pentium or AMD system

•

Minimum 64MB system memory

•

Windows 98SE, ME, 2000, or XP operating system

•

CD-ROM drive (for software installation)

•

An available USB port (USB 2.0 recommended because USB 1.1 cannot
achieve maximum wireless performance)

Device Installation
Follow these instructions (detailed later in this section) to install the WebSTAR
DPW939 USB Wireless LAN Adapter.
1. Install the device utilities from the support CD.
2. Connect the device to your computer.
Important: You must install the WebSTAR DPW939 USB Wireless LAN Adapter
drivers and utilities from the support CD before connecting the device to your
computer.

Before You Proceed
Note the following guidelines before installing the WebSTAR DPW939 USB
Wireless LAN Adapter:
• Place the device on a flat, stable surface as far from the ground as possible.
• Keep the device clear from metal obstructions and away from direct sunlight to
avoid damage to the device.
• Keep the device away from transformers, heavy-duty motors, fluorescent lights,
microwave ovens, refrigerators, and other industrial equipment to prevent
signal loss.
• Install the device in a central area to provide ideal coverage for all wireless
mobile devices.
• Install the device at least 20 cm from a person to insure that the product is
operated in accordance with the RF Guidelines for Human Exposure adopted
by the Federal Communications Commission.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

To install the device drivers and utilities
1. Insert the support CD into the CD-ROM drive of your PC or laptop. The CD
automatically loads and the 802.11b/g WebSTAR Wireless LAN installation
window opens displaying three device installation options.

2. Select DPW939 – Wireless USB Adapter. The DPW939 Wireless USB
Adapter installation window opens.

3. Click Install Utility.
Note: If Autorun is NOT enabled in your computer, browse the contents of
the support CD and double-click the Setup.exe file to run the CD.
4. Follow the on-screen instructions. The device drivers and utilities are copied
to your computer.
5. Restart your computer if prompted to do so.

Software and Hardware Installation

Important: If the Wireless Option window opens, select Only use our WLAN
utilities and disable Windows wireless function. Then, click OK.

To install the device
After you have installed the Utility, insert the DPW939 into any USB port.
Notebook PC: Insert the device into any USB port using the correct orientation.
Desktop PC: A USB 2.0 extension cable with base is provided. Plug the
extension cable into a USB port before inserting the DPW939.

802.11G Wireless Adapter-USB Stick

T11485

1. Double-click on the WLAN Control Center icon on your desktop. After a few
moments, the One Touch Wizard window opens displaying operation mode
options. Select the option you want to use and click Next.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

2. If you select Connect to an existing wireless LAN (Station), the following
window opens. Click Next, then go to step 3. If you select Create a new
wireless LAN (AP), go to To create a new wireless LAN, next in this
section.

3. The following window opens. Click Next.

Software and Hardware Installation

4. The following window opens. Verify that BOTH Obtain an IP address
automatically and Obtain DNS server address automatically are selected.
If they are not selected, select each option. Then, click Finish.

5. After completing the installation, you must configure the WebSTAR DPW939
USB Wireless LAN Adapter using the Wireless Settings option from the
Control Center right-click menu. Go to Control Center Right-Click Menu,
later in this guide.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

To create a new wireless LAN
1. To create a new wireless LAN, select Create a new wireless LAN (AP) in
the One Touch Wizard window. Click Next.

2. Verify that the SSID shown is correct, or type the correct SSID in the SSID
field. Also select Data encryption, if desired, and then click Next.

Software and Hardware Installation

3. The following screen opens. If your setup is complete, click Finish. If you
want to configure Internet Connection Sharing, click Next.

4. The following screen opens when your setup is complete.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

Additional support CD options
The following options are also available on the support CD:

•

Uninstall Utility—Click this option to uninstall the WebSTAR DPW939
Wireless USB Adapter WLAN Card utilities from your system.

•

View the DPW939 User’s Guide—Click this option to view the DPW939
User’s Guide. The User’s Guide is in Adobe PDF format. An Adobe Reader
utility is included on the CD for your convenience. You can also copy the
User’s Guide to your PC for future use.

•

Explore this CD—Click this option to explore the support CD contents.

Monitoring and Configuring the WebSTAR DPW939 USB Wireless LAN Adapter

Monitoring and Configuring the WebSTAR DPW939 USB Wireless LAN Adapter
This section provides information on how to monitor and configure the WebSTAR DPW939 USB Wireless LAN
Adapter using the Control Center utility.

Launching the Control Center
The Control Center utility is a management software that launches applications
and configures network settings. The Control Center starts automatically when
the system boots and displays the Control Center icon
in the Windows
taskbar. The Control Center icon serves both as an application launcher and as
an indicator of signal quality and Internet connection.

About the Control Center Icon
The Control Center icon indicates the quality of link to the access point and
connection to the Internet. Refer to the following tables for icon indications in
both Infrastructure and Ad-hoc networks.
Infrastructure network (wireless LAN adapter linked to an access point)
ICON

Indicates

ICON

Indicates

Excellent link quality and
connected to the Internet

Excellent link quality but not connected
to the Internet

Good link quality and
connected to the Internet

Good link quality but not connected to
the Internet

Fair link quality and
connected to the Internet

Fair link quality but not connected to
the Internet

Poor link quality but
connected to the Internet

Poor link quality and not connected to
the Internet

Not linked but connected to
the Internet

Not linked and not connected to the
Internet.

Ad-hoc network (wireless LAN adapter linked to another Wi-Fi device)
ICON

Indicates
The device is linked to another device

The device is not linked to another device

The device is connected to the Internet

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

Control Center Left-Click Menu
Left clicking the Control Center icon
displays the left-click menu for the
WebSTAR DPW939 USB Wireless LAN Adapter. The following illustration and
list describes the options available from the Control Center left-click menu.
The left click menu shows if the
wireless radio state is on
(enabled) or off (disabled).
Search & Connect opens the
Site Survey window that allows
you to view available wireless
networks that are within range.
Wireless Option opens the
Wireless Option window that
allows you to set your Windows
XP wireless networking
environment. The Wireless
Option window appears when
you select this option. Select
“Only use our WLAN utilities
and disable Windows
wireless function” to utilize all
WebSTAR DPW939 USB
Wireless LAN Adapter features.
Then, click OK.

Control Center Right-Click Menu
Right clicking the Control Center icon
displays the software and utilities that
the WebSTAR DPW939USB Wireless LAN Adapter supports. The following
illustration and list describes the utilities and features available from the Control
Center right-click menu. A detailed description of each utility and feature follows
later in this section.
Wireless Settings allows you to view the
operational and connection status or to modify
the wireless LAN adapter configuration.
Activate Configuration allows you to select
the wireless profile to use.
Mobile Manager allows you to launch the
Mobile Manager utility.
Site Monitor allows you to launch the Site
Monitor utility.
The Help menu guides you in using the
Control Center and Wireless Settings utilities.
The Change Mode menu allows you to select
between Station Mode and Soft Access Point
Mode.

Monitoring and Configuring the WebSTAR DPW939 USB Wireless LAN Adapter

Preferences opens the Control
Center Preference window that
allows you to customize the Control
Center Utility settings.

About Control Center opens the
About Control Center window that
displays the Control Center
software version and copyright
information.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

Viewing or Modifying Wireless Settings
The Wireless Settings selection allows you to control the WebSTAR DPW939
USB Wireless LAN adapter. Use Wireless Settings to view the operational and
connection status or to modify the wireless LAN adapter configuration.

To view or modify wireless settings
Right-click the Control Center icon
and select Wireless Settings to display
the WLAN Card Settings window. The WLAN Card Settings window opens.

Displaying General Information
The WLAN Card Settings window includes icons, tabbed pages, and additional
function keys that allow you to monitor and configure the DPW939. Click an icon
in the window and then select the appropriate tab to display the individual tabbed
pages. A detailed description of the screens and configuration options that
display when you select each icon and each tab follows next in this section.

Monitoring and Configuring the WebSTAR DPW939 USB Wireless LAN Adapter

To display general information
The Status icon provides general information about the WebSTAR DPW939
USB Wireless LAN adapter. The following illustration and list describes the fields
that display on the Status tab when you select the Status icon on the WLAN Card
Settings window.
Association State – This field
displays the connection status and
MAC address of the network where
the system is connected.
SSID (Service Set Identifier) – This
field displays the SSID of the
network to which the card is
associated or is intending to join.
The SSID is a group name shared
by every member of a wireless
network. Only client PCs with the
same SSID are allowed to establish
a connection.
MAC address – This field displays the hardware address of a device connected
to a network.
Current Channel – This field displays the radio channel to which the card is
currently tuned. The channel changes as the wireless LAN adapter scans the
available channels.
Current Data Rate – This field displays the data transfer rate between the
wireless LAN adapter and the access point.
Radio State – This field allows you to enable or disable the wireless radio state.
Rescan – Click to allow the wireless LAN adapter to scan available wireless
networks and to connect to the network with the best signal quality.
Change SSID – Click to change the SSID. Clicking this button opens the ConfigBasic window.
Search & Connect – Click to view all wireless networks within the range of your
system. Clicking this button opens the Site Survey window.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

To display connection status
The Connection tab provides real-time information on connection throughput,
frame errors, signal strength, link quality, and overall connection quality in an
easy-to-view graphical representation. Refer to the Troubleshooting section,
later in this guide, for additional information on using the connection status
information shown in this window.

To verify network settings
The IP Config tab displays the current host and Ethernet adapter configurations.
The IP Config tab also displays TCP/IP information including the IP address,
subnet mask, default gateway, DNS, and Windows Internet Naming Service
(WINS) configurations. Use the IP Config tab to verify your network settings.
The following illustration and list describes the function buttons that appear on
the IP Config tab when you select the Status icon on the WLAN Card Settings
window. Refer to the Troubleshooting section, later in this guide, for additional
information about the functions shown in this window.
IP Release – Click to release
(clear) the DHCP IP address for
the wireless LAN adapter.
IP Renew – Click to renew
(update) the DHCP IP address
for the wireless LAN adapter.
Ping – Click to display the Ping
tab. Send a ping signal to verify
a connection to a particular host
name or IP address.
Note: The IP Release and IP
Renew buttons may only be
used on a DHCP-configured
wireless LAN adapter.

Monitoring and Configuring the WebSTAR DPW939 USB Wireless LAN Adapter

To verify connection to another computer
The Ping tab allows you to verify the connection of your computer with another
computer in a network. The Ping tab appears when you select the Ping button on
the IP Config tab on the WLAN Card Settings window. Complete these steps to
ping a connection.
1. Type the IP address of the
connection you want to
verify in the IP Address
field.
2. Configure the ping session
by assigning the size and
count of the packets to send
and the time limit for a ping
session to continue (in
milliseconds).
3. Click the Ping button.
Note: During the ping
session, the Ping button
toggles into a Stop button.
Click Stop anytime during
the session to cancel the
ping session. The Stop
button toggles back to Ping
when the ping session
stops.
The session field displays
information on the verified
connection including the
roundtrip time (minimum,
maximum, and average)
along with packets sent,
received, and lost after a
ping session.
4. Click the Clear button to
clear the session field.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

Configuring the Network
The Config icon on the WLAN Card Settings window allows you to display
general information on network types and other configurations. The following
illustration and list describes the fields and options that appear on the Basic tab
when you select the Config icon on the WLAN Card Settings window.
Network Type – This option allows
you to select the type of network
that you wish to use. Select
Infrastructure to establish a
connection with an access point
(AP). In this mode, your system
can access wireless LAN and
wired LAN (Ethernet) through the
AP. Select Ad Hoc to communicate directly with other mobile
clients within the wireless LAN
adapter range.

Network Name (SSID) – This field displays the network SSID. The network
SSID is a string use to identify a wireless LAN. Assign different SSIDs to
segment the wireless LAN and increase network security. Set the SSID to a null
string to allow your station to connect to any available access point. Null string
may not be used in Ad-hoc mode.
Channel – In Infrastructure mode, the wireless LAN adapter automatically tunes
in to the access point channel. In Ad-hoc mode, select a channel that is allowed
for use in your country/region.
Data Rate – Sets the data transmission rate to Fixed or Auto. Select Fully Auto
to allow the device to adjust to the most suitable connection. You may also fix
data transfer rates to 54, 48, 36, 24, 18, 12, 11, 9, 6, 5.5, 2, and 1 Mbps.
Note: Operating the device at very high data rates reduces the operating range.
When the “Data Rate” is changed, the adapter will survey available APs and
connect to the AP with the strongest signal.
PS Mode – This field allows you to select a power consumption mode.
Others – Click the Encryption link or the Advanced link to open the Encryption
or Advanced tabbed pages. Click Troubleshooting to open the Troubleshooting
utility.

Monitoring and Configuring the WebSTAR DPW939 USB Wireless LAN Adapter

To configure encryption
Wireless data transmissions between your wireless LAN adapter and the AP are
secured using the Wired Equivalent Privacy (WEP) encryption. The following
illustration and list describes the fields and options that appear on the
Encryption tab when you select the Config icon on the WLAN Card Settings
window.
Network Authentication allows
you to select one of the following
four Network Authentication
methods:
•

Shared

•

Open

•

WPA-PSK

•

WPA

Select one of these four options
if you wish to use a network key
to authenticate a preferred
wireless network.
Important: Use the online help to find detailed information about these Network
Authentication methods.
Data encryption allows you to enable or disable WEP keys.
Wireless Network Key (WEP)
Key Format allows you to set a hexadecimal digit or ASCII character WEP key.
Key Length allows you to choose a 64-bit or a 128-bit WEP key.
•

64-bit encryption contains 10 hexadecimal digits or 5 ASCII characters.

•

128-bit encryption contains 26 hexadecimal digits or 13 ASCII characters.

Important: All wireless clients in a network must have identical WEP keys to
communicate with each other or with an access point.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

To assign WEP keys
Complete these steps to assign WEP keys.
Manual Assignment. For 64-bit encryption, enter 10 hexadecimal digits (0~9,
a~f, A~F) or 5 ASCII characters in each of the four WEP keys. For 128-bit
encryption, enter 26 hexadecimal digits (0~9, a~f, A~F) or 13 ASCII characters
in each of the four WEP keys.
Automatic Generation. Type a combination of up to 64 letters, numbers, or
symbols in the Passphrase field. The Wireless Settings utility uses an algorithm
to generate four WEP keys based on the typed combination.

Important:

•

64-bit and 40-bit WEP keys use the same encryption method and can
interoperate on wireless networks. This lower level of WEP encryption uses
a 40-bit (10 hexadecimal digits assigned by the user) secret key and a 24bit Initialization Vector assigned by the wireless LAN adapter. 104-bit and
128-bit WEP keys use the same encryption method.

•

After assigning the WEP keys, click Apply to save and activate the
encryption. Manually assigned encryptions are more secure than
automatically generated encryptions.

•

Use Manual Assignment instead of Automatic Generation if you are not sure
whether other wireless clients use the same algorithm as that of wireless
LAN adapter.

•

Keep a record of the WEP encryption keys.

Monitoring and Configuring the WebSTAR DPW939 USB Wireless LAN Adapter

Locating Available Wireless Networks
The Site Survey window displays the available networks within the wireless LAN
adapter range. The following illustration and list describes the fields that display
on the Site Survey tab when you select the Survey icon in the WLAN Card
Settings window.
SSID – Displays the SSID
(service set identifier) of the
network.
Ch – Displays the direct
sequence channel used by the
network.
RSSI – Displays the Received
Signal Strength Indicator (RSSI)
in dBm.
Security - Shows whether a
network has an enabled (On) or
disabled (Off) WEP encryption.
BSSID – Displays the MAC
address of the access point or
the BSSID of the Ad-hoc node.
Search – Scans all available wireless networks and displays the scan result in the
Available Networks field. Select an available wireless network from the Available
Networks field and click Connect to establish a connection. If you do not find an
available network, click Search again to rescan all available networks.

About Wireless Settings
The About icon displays the software version, driver version, and copyright
information.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

Displaying Connection Status
The Link State icon on the WLAN Card Settings window displays the current
connection status of the wireless LAN adapter to the AP or to other Wi-Fi devices.
An icon represents the link state for easy identification. Refer to the following
table for icon indications.
Excellent link quality
(Infrastructure)

Not linked
(Infrastructure)

Good link quality
(Infrastructure)

Linked (Ad-hoc)

Fair link quality
(Infrastructure)

Not linked (Ad-hoc)

Poor link quality
(Infrastructure)

Scanning

Command Icons
The command icons that appear on the WLAN Card Settings window allow you
to perform various functions. The following illustration and list describes these
functions.
Apply – Click to apply the
changes made on the
Wireless Settings utility.
OK – Click to close the
Wireless Settings utility
window.
Cancel – Click to cancel
any changes made on the
Wireless Settings utility.
Clicking Cancel closes the
Wireless Settings utility
window.
Help – Click to display the
context-sensitive (windowspecific) online help menu.

Configuring and Managing Network Location Settings

Configuring and Managing Network Location Settings
The Mobile Manager utility is a convenient tool to configure and manage network location settings. This utility
allows users to configure multiple alternative configurations for different locations. You need to set up this utility
once so you can easily switch configurations when you change your location.

Launching the Mobile Manager Utility
To launch the Mobile Manager utility, right-click the Control Center icon on the
Windows taskbar, and select Mobile Manager. The Mobile Manager window
opens.

Note: Use the Mobile Manager utility main window to create, edit, or activate a
configuration. The main window displays the menu bar, toolbar, and existing
configurations. The toolbar buttons allow quick access to some common
commands in the Mobile Manager utility. All toolbar button commands are also
available from the menu bar.

Mobile Manager Utility Menus
The following tables describe the features available from the Mobile Manager
window menu bar and toolbar.

File Menu
New Configuration

Import Configuration
Export Configuration

Exit

Select this option to launch the New
Configuration Wizard. See Creating a New
Configuration, later in this section, for details.
Select this option to load a configuration from an
INI File.
Save the selected configuration (containing
Wireless Settings, TCP/IP Settings, Network
Settings, etc.) to an INI file. The INI file may be
saved on a floppy disk, and may be imported by
other computers with the Mobile Manager utility.
You may also use this file as a backup.
Select to close the Mobile Manager utility.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

Mobilize Menu
Auto Roaming

Activate Configuration

Activating this option allows the WebSTAR
DPW939 USB Wireless LAN Adapter to switch
to another association you have specified when
changes to an existing association occurred. If
no associations are made, Auto Roaming
automatically connects to a wireless network
based on your specified configurations.
Applies the configuration you selected from the
list. Follow the on-screen instructions to activate
a configuration.

Note: Activating a configuration requires system restart when you are using
Windows 98 or Windows ME. Windows 2000 and Windows XP do not require
a system restart after you activate a configuration.

Edit Menu
Note: The Edit menu commands appear when you right-click a configuration in
the Mobile Manager window.
Edit Configuration

Rename
Copy
Delete

The Edit Configuration option allows you to edit
selected configuration items. See Editing a
Configuration, later in this section, for details.
Changes the name of the selected configuration
Duplicates the selected configuration
Discards the selected configuration

Up Arrow

Raises the position of a selected wireless
network configuration in the preferred network list

Down Arrow

Lowers the position of the selected wireless
network configuration in the preferred network list

Configuring and Managing Network Location Settings

View Menu
Large Icons
Small Icons
List
Details

Displays large icons for each configuration
Displays small icons for each configuration
Shows a list of available configurations
Displays the name, type, and description of a
selected configuration

Help Menu
Contents
About Mobile Manager

Displays the WinHelp window for contextsensitive (window-specific) online help
Displays the Mobile Manager version number
and copyright information. Click on the
WebSTAR logo to open the WebSTAR Web
site

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

Creating a New Configuration
Complete these steps to create a new configuration.
1. Right-click the Control Center icon on the Windows taskbar and select
Mobile Manager. The Mobile Manager window opens.
2. To launch the New Configuration Wizard, click File and then select New
Configuration from the menu. The New Configuration Wizard dialog box
opens.
3. Choose one of the following
configuration types; then, click
Next:
•

Select 802.11b/g Wireless
Local Area Network
Configuration if you have
an installed WebSTAR
DPW939 USB Wireless LAN
Adapter in your computer.

•

Select Local Area Network
Configuration if your
computer has an installed
network interface card other
than a WebSTAR DPW939
USB Wireless LAN Adapter.

•

Select Dialup Networking
Configuration if your
computer has an installed
modem.

4. Enter the name and description
of the configuration you wish to
create. Then, click Next.

Configuring and Managing Network Location Settings

5. Select the wireless settings
you want to use. Then, click
Next.

6. Select “Obtain an IP
address from a DHCP
Server” to allow the system
to automatically assign an IP
address. Or, select “Specify
an IP address” to manually
enter an IP address; then,
type the IP address and the
Subnet Mask in the text box.
Then, click Next.

7. Enter the computer name
that identifies your computer
on the network. Do not
change the Primary DNS
Suffix. Then, click Next.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

8. Use this window to verify
and/or change the proxy server
and printer sharing settings.
Click Advanced to display
and/or change the proxy server
and printer sharing options.
Then, click Next.

9. Select the Activate
Configuration Now option to
start using the created
configuration.
Note: The Mobile Manager
window displays the newly
created configuration even
when it is not activated.
10. Click Finish to close the
wizard.

Configuring and Managing Network Location Settings

Editing a Configuration
If you change your location or make changes in the network, you may need to
edit an existing configuration. Use the Edit Configuration window to edit an
existing configuration.
1. Select a configuration from the
Mobile Manager window.
2. Click Edit from the menu bar,
then, select Edit Configuration.
The Edit Configuration window
opens. Navigate through the
various Edit Configuration
windows by clicking the icons on
the left side of the window and
then on the tabs that display
within each window. A description
of these icons and tabs follows
next in this section.
General settings
This selection allows you to type a name and add a description (optional) for your
configuration.
Name – This field allows you to name your configuration. You can use the location
from where you are dialing or connecting to a network. For example, name your
configuration “Work-Meeting Room” if you are using this connection at your
workplace meeting room.
Description – (Optional) This field allows you to enter additional details about the
configuration in this field.
Network settings—Wireless tab
This selection allows you to edit your wireless network settings
Priority of Preferred Network – This
field allows you to select the priority of
the preferred network.
Network Type:
– Infrastructure – Select
Infrastructure to establish
connection to an access point.
– Ad Hoc – Select Ad Hoc to
communicate directly with other
WLAN devices without using an
access point.
SSID – This field allows you to select an SSID. SSID is a string used to identify a
wireless LAN. You can only connect with an access point that has the same SSID.
Use different SSIDs to segment the wireless LAN and add security.
Channel – This field allows you to select the radio channel for the WebSTAR
DPW939 USB Wireless LAN Adapter. In an Infrastructure network, your wireless
LAN adapter automatically selects the correct frequency channel required to
communicate with an access point.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

Network Authentication – This field allows you to select Open System,
Shared Key, or WPA-PSK network authentication methods.
Data encryption – This field allows you to disable or enable (64-bit or 128bit) WEP encryption. The WEP Key is a 64-bit (5 byte) or 128-bit (13 byte)
hexadecimal digit use to encrypt transmitted data packets and decrypt
received data packets.
Network settings—Identification tab
This selection allows you to edit the computer name and workgroup that
identifies your computer on the network.
Computer name – This field allows you to assign your computer a unique
name of up to 15 characters. The computer name allows other users in a
network to recognize your computer. The computer name is generally the
same with the DNS hostname.
Workgroup – This field allows you to specify the workgroup that your
computer is in.
Note: Avoid using spaces or symbols in your computer name or workgroup.
TCP/IP settings—Device tab
The TCP/IP settings Device tab
allows you to select the network
adapter you want to use for this
configuration.
Note: This item appears only when
you are editing a wired LAN
configuration.

TCP/IP settings—IP Address tab
This selection allows you to verify and/or change the way your computer
receives an IP address.
Obtain an IP address from a DHCP server – The Dynamic Host
Configuration Protocol (DHCP) server assigns IP addresses automatically
within a specified range of devices.
Specify an IP address – Ask your network administrator for the IP address
and subnet mask you should use. Type in the IP address and Subnet Mask
manually.
TCP/IP settings—Gateway tab
This selection allows you to specify the gateways used to access the network.
You may specify more than one gateway. Set up the primary gateway first.
Add – This button allows you to add a new TCP/IP gateway address. The
added gateway appears in the Default gateways list. Repeat the process to
add another gateway. The value in each gateway field must be between 0
and 255. You can have up to eight IP addresses for gateways.
Edit – This button allows you to edit a selected gateway address.
Remove – This button allows you to delete a selected gateway address.

Configuring and Managing Network Location Settings

TCP/IP settings—DNS tab
The DNS tab allows you to configure the DNS settings of the selected
configuration. This tab also allows you to add a DNS server and arrange them
in order of their use. You may also assign a DNS suffix for a specified DNS
server.
TCP/IP settings—WINS tab
The WINS tab allows you to configure the WINS settings of the selected
configuration. This tab allows you to add WINS addresses and arrange them in
order of their use. This tab also allows you to enable or import LMHOST
lookup and adjust the NetBIOS settings.
Internet settings
This selection allows you to configure your proxy server settings.
A proxy server acts as a security
barrier between your internal
network (intranet) and the Internet.
A proxy server restricts other
people on the Internet from gaining
access to confidential information
on your intranet or your computer.
Disable Proxy Server – This
selection allows you to disable the
proxy server.
Enable Proxy Server – This
selection allows you to use the
Proxy server to access the Internet.
Note: You may gain access to local
addresses easier and faster if you
do not use the proxy server.
Use the same proxy server for all protocols – This selection specifies
whether you want to use the same proxy server to gain access to the Internet
using all protocols.
Servers fields – These fields allow you to type the address and port number
of the proxy server you want to use to gain access to the Internet over HTTP,
Secure, FTP, Gopher, or Socks protocol.
Exceptions field
This selection allows you to specify exceptions to your proxy server settings.
Do not use proxy server for address beginning with – This field allows you
to type the Web addresses that do not need to be accessed through the proxy
server. If you want to connect to a computer on your intranet, make sure you
type its address in this text box. You may use wild cards to match domain and
host names or addresses, for example, “*.company.com” or “192.72.111.*”
Bypass proxy server for local addresses – This option allows you to use the
proxy server for all local (intranet) addresses.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

Sharing settings
This selection allows you to share printers over the network. To activate these
settings you must have File and Printer Sharing for Microsoft Networks installed
on your computer.
I want to set the default
printer– This option allows
you to select the default
printer for printer sharing.
Default printer – This option
allows you to select the
default printer from a list of
installed printers.
Click New to add a new
printer using the Windows®
Add Printer Wizard.
Click Properties to display
the properties of a selected
printer.
Command options
Click these buttons to activate, save, or cancel changes made in the
configuration. Click Close to close the Edit Configuration window. Click Help to
view the context-sensitive (window-specific) help files.

Command Options

Configuring and Managing Network Location Settings

Monitoring Available Wireless Networks
The Site Monitor utility measures the signal-to-noise (SNR) values of all
available wireless networks. Use this utility to determine the best placement of
access points in a wireless network.

To monitor available wireless networks
Follow this procedure to monitor available wireless networks using the Site
Monitor utility.
1. Right-click the Control Center icon
on the Windows taskbar and select
Site Monitor. The Site Monitor
survey message appears.
2. Click OK. The Site Monitor window
opens.

To view available wireless connections
The Site Monitor main window displays the available wireless connections and
the SNR value of each available connection. Use the Site Monitor window to
locate the available wireless connection with the best signal.

Note: Some access points disable their SSID broadcasting to hide themselves
from “Site Survey” or “Site Monitor.” You may join these APs if you know their
SSIDs.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

Monitoring a Connection
Follow this procedure to monitor a connection for troubleshooting or configuration
purposes. The Monitor window provides a detailed analysis of the wireless
connection.
1. Select the connection from the available networks displayed in the Site
Monitor window.
2. Click Commands from the Site Monitor window menu bar, and then select
Monitor. The Monitor window opens.

Troubleshooting

Troubleshooting
This section contains troubleshooting tips for solving common problems you may encounter when using the
WebSTAR DPW939 USB Wireless LAN Adapter.

Troubleshooting the DPW939 USB Wireless LAN Adapter
This troubleshooting section provides answers to some common problems which
you may encounter while installing and/or using WebSTAR DPW939 USB
Wireless LAN Adapter. These problems require simple troubleshooting that you
can perform by yourself. Contact SciCare Broadband Services if you encounter
problems not mentioned in this section.
Problem

Solution

My computer does not
recognize the installed
WebSTAR DPW939 USB
Wireless LAN Adapter.

Verify that the WebSTAR DPW939 USB
Wireless LAN Adapter drivers are properly
installed by following these instructions:
1.

Open the Control Panel window from the
Windows desktop.

Double-click the System icon. Choose one
of the following options depending on your
operating system:

•

Windows 98SE and Me users: Select
the Device Manager tab.

•

Windows 2000 and XP users: Select the
Hardware tab; then, click Device
Manager.

Click the + symbol preceding the Network
Adapters item then check the 802.11b/g
Network Adapter item.
Note: A yellow exclamation point or a red
plus sign preceding the network adapter
means that the device driver is not properly
installed. Re-install the device driver
according to the instructions that follow next.

A yellow exclamation point
or a red plus sign appears
on the WebSTAR 802.11b
Network Adapter or
WebSTAR 802.11g
Network Adapter item.

The device driver is not properly installed.
Follow these instructions to uninstall and reinstall the driver.
1.

Insert the Support CD into the CD-ROM
drive.

When the WebSTAR Wireless LAN
installation window appears, click Uninstall
Utility.

Restart your computer and repeat the
software installation following the installation
instructions found in the Software and
Hardware Installation section, earlier in
this guide.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

Problem

Solution

I cannot connect to an
Access Point.

•

Verify that the Network Type of the
device is set to Infrastructure mode.

•

Verify that the device has the same
Service Set Identifier (SSID) as that of
the AP.

•

Verify that the device and the AP have the
same Encryption. If WEP encryption is
enabled, set the same WEP keys for the
device and the AP.

•

Verify that the MAC address of the device
is added in the AP Authorization Table.
Verify this with your LAN administrator.

•

Verify that there is good signal reception.
Shorten the distance between the device
and the access point.

•

Verify that the device and the AP have the
same Encryption. If WEP encryption is
enabled, set the same WEP keys for the
device and the AP.

•

Verify that the network protocol
parameters (IP address, subnet mask,
gateway, and DNS) of your computer are
correctly set.

•

Verify the proxy settings of the Web
browser.

•

Verify that the device has the same
Service Set Identifier (SSID) with that of
the other station.

•

Verify that there is good signal reception.
Shorten the distance between the device
and the station.

•

Verify that the device and the other station
have the same Encryption. If WEP
encryption is enabled, set the same WEP
keys for the device and the AP.

•

Verify that the device and the other APs
and/or clients have the same Encryption.
If you enable WEP encryption, you must
set the same WEP keys for the device
and the other AP/s and/or clients.

•

Verify the TCP/IP settings (IP address,
subnet mask, gateway, and DNS) of your
computer.

•

Enable file and printer sharing in each
client computer to allow file sharing.

I can connect to an Access
Point but I cannot connect to
the Internet.

I cannot connect to another
station with a wireless LAN
device.

I cannot connect to other
computers linked via an
Access Point or Ad-hoc
network.

Troubleshooting

Problem

Solution

I always have poor link quality
and low signal.

Do the following to achieve better link quality
and stronger signal:

The throughput seems slow.

Why do I get the warning “HiSpeed USB Device Plugged
Into Non-Hi-Speed USB Hub”
message when I connected
the WebSTAR DPW939 USB
Wireless LAN Adapter to the
USB port?

When I remove the wireless
adapter from my computer
running Windows 98SE, my
system becomes very slow
and stops responding.

•

Keep the device away from microwave
ovens and large metal objects to avoid
radio interference.

•

Shorten the distance between the device
and the AP/station.

•

Avoid placing the device behind a metal
object. Clear obstacles between the AP
and the device.

•

Try moving the client closer to the
WebSTAR DPW939 USB Wireless LAN
Adapter to see if the throughput
increases.

•

Consider adding a second WebSTAR
DPW939 USB Wireless LAN Adapter to
implement roaming.

This warning message appears when you
plug the WebSTAR DPW939 USB Wireless
LAN Adapter to a USB 1.1 port. Select from
one of the following options according to your
operating system:
•

For Windows XP users, you need to
upgrade your OS to Service Pack 1 to
convert your USB ports to USB 2.0.

•

For Windows 2000 users, you must install
Service Pack 4 in order to convert your
USB ports into USB 2.0. You can
download these service packs from the
Windows Update Web site
(www.windowsupdate.microsoft.com).

This is a limitation with computers equipped
with Intel/NVIDIA USB 2.0 controller and
running the newest OrangeWare USB 2.0
driver.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

Regulation Domain
IEEE 802.11b/g networks are regulated worldwide because these networks use the 2.4GHz ~ 2.5GHz ISM
(Instrumentation, Scientific, and Medical) Band. The WebSTAR DPW939 USB Wireless LAN Adapter is shipped
with a default regulation domain allowed in your country and location. The FCC (US) and ETSI (Europe) specify
operation from 2.4 GHz to 2.4835 GHz. For Japan, operation is specified as 2.4 GHz to 2.497 GHz. For each
supported regulatory domain, all channels marked with “Yes” are supported. The channel center frequencies and
channel ID (CH ID) numbers are shown in the following table.

DSSS PHY frequency channel plan
.

Regulatory Domain
CH ID

Frequency

X’10’ FCC

X’30’ FCC

X’40’MKK

2412 MHz

Yes

2417 MHz

Yes

2422 MHz

Yes

2427 MHz

Yes

2432 MHz

Yes

2437 MHz

Yes

2442 MHz

Yes

2447 MHz

Yes

2452 MHz

Yes

2457 MHz

Yes

2462 MHz

Yes

2467 MHz

–

Yes

2472 MHz

–

Yes

2484 MHz

–

In a multiple cell network topology, overlapping and/or adjacent cells using
different channels can operate simultaneously without interference if the distance
between the center frequencies is at least 30 MHz.
Important: Channel 14 is specifically for operation in Japan.

Regulating agencies and allowed channels
Country

Regulating Agency

Allowed Channels

Unites States

FCC

1-11

Europe

ETSI

1-13

Japan

MKK

1-14

Technical Specifications

Technical Specifications
This section provides the technical specifications for your WebSTAR DPW939 USB Wireless LAN Adapter.
Important: Specifications are subject to change without notice.

Hardware and Software Specifications
Specification

Parameter

Standard

IEEE 802.11g

Interface

USB 2.0

Operation Modes

•

Ad-hoc network mode

•

Infrastructure network mode

•

SSID network identification for
security

•

64-bit and 128-bit WEP data
encryption and decryption

•

WiFi Protected Access (WPA)

Security Features

Data transfer rate

Technology

•

802.11g: 54Mbps with auto-fallback
to 48, 36, 24, 18, 12, 9, and 6Mbps

•

802.11b: 11Mbps with auto-fallback
to 5.5, 2, and 1Mbps

•

Octagonal Frequency Division
Multiplexing (OFDM)

•

Direct Sequence Spread Spectrum
(DSSS)

Supported Operating Systems

Windows 98SE, ME, 2000, and XP

Device Driver and Configuration
Utility

Wireless Setting Utility running on
Microsoft Windows 98SE, ME, 2000
(SP4), and XP (SP1) platform
Note: Under Windows XP, use the
Windows XP built-in monitor and
configuration utility.

Operating Distance

* Line-of-sight

•

Indoors @ 11Mbps : 130 ft (40 m)

•

Indoors @ 54Mbps : 80 ft (25 m)

•

Outdoors @ 11Mbps LOS* : 1000 ft
(310 m)

•

Outdoors @ 54Mbps LOS* : 200 ft
(60 m)

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

Specification

Parameter

Frequency Band

2.4 GHz ~ 2.5 GHz

Compatibility

Compatible with IEEE 802.11b and
802.11g devices

Power Requirements

USB bus powered

LED Indicators

•

Activity

•

Power

•

FCC

•

VCCI

•

TELEC & JATE

•

Control Center

•

One Touch Wizard

•

Wireless Settings

•

Mobile Manager

•

Site Monitor

•

Troubleshooting

Safety and Regulatory Approvals

Software Support

Note: The DPW939 USB Wireless LAN Adapter operating distance may be
shorter if there are walls, barriers, or interferences in the home layout or
operating environment.

Glossary

Glossary
10BaseT
Access Point

An inter-networking device that seamlessly connects wired and wireless networks.
Access points, when combined with a distributed system, support the creation of
multiple radio cells that enable roaming throughout a facility.

Ad Hoc

A network composed solely of stations within mutual communication range of each
other (no access point connected).

BSS
Channel

Encapsulated
ESS

Basic Service Set. A set of stations controlled by a single coordination function.
A medium used to pass protocol data units that can be used simultaneously in the
same volume of space by other channels of the same physical layer with an
acceptably low frame error ratio due to mutual interference.
An Ethernet address mode that treats the entire Ethernet packet as a whole and
places it inside an 802.11 frame along with a new header.
Extended Service Set. A set of one or more interconnected Basic Service Sets
(BSSs) and integrated Local Area Networks (LANs) can be configured as an
Extended Service Set.

Ethernet

The most widely used medium access method, which is defined by the IEEE 802.3
standard. Ethernet is normally a shared media LAN; for example, all the devices
on the network segment share total bandwidth. Ethernet networks operate at
10 Mbps using CSMA/CD to run over 10BaseT cables.

Gateway

A network component that acts as an entrance to another network.

IEEE 802.11

Infrastructure

An IEEE standard (802.3) for operating 10 Mbps Ethernet networks (LANs) with
twisted pair cabling and a wiring hub.

The IEEE 802.xx is a set of specifications for LANs from the Institute of Electrical
and Electronic Engineers (IEEE). Most wired networks conform to 802.3 (the
specification for CSMA/CD-based Ethernet networks), or 802.5 (the specification
for token ring networks). Specification 802.11 defines the standard for wireless
LANs encompassing three incompatible (non-interoperable) technologies:
Frequency Hopping Spread Spectrum (FHSS), Direct Sequence Spread Spectrum
(DSSS), and Infrared. IEEE standards ensure interoperability between systems of
the same type.
A wireless network centered about an access point. In this environment, the
access point not only provides communication with the wired network but also
mediates wireless network traffic in the immediate neighborhood.
Internet Protocol. The standard protocol within TCP/IP that defines the basic unit
of information passed across an Internet connection by breaking down data
messages into packets, routing and transporting the packets over network
connections, then reassembling the packets at their destination. IP corresponds to
the network layer in the ISO/OSI model.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

IP Address

ISP

Internet Service Provider. An organization that provides access to the Internet.
Small ISPs provide service using cable modems and ISDN, while the larger ISPs
also offer private line hookups (T1, fractional T1, T3, etc.).

LAN

Local Area Network. A communications network that serves users within a defined
geographical area. The benefits include the sharing of Internet access, files, and
equipment, such as printers and storage devices. Special network cabling
(10BaseT) is often used to connect the PCs together.

NAT

Network Address Translation. The translation of an Internet Protocol address
(IP address) used within one network to a different IP address known within
another network. One network is designated as the internal network and the other
is designated as the external. The internal network then appears as one entity to
the outside world.

An IP address is a 32-bit number that identifies each sender or receiver of
information sent across the Internet. An IP address has two parts: the identifier of
a particular network on the Internet, and an identifier of the particular device (which
can be a server or a workstation) within that network.

Radio Frequency. The international unit for measuring frequency is Hertz (Hz), which
is equivalent to the older unit of cycles per second. One megahertz (MHz) is one
million Hertz. One gigahertz (GHz) is one billion Hertz. The standard U.S. electrical
power frequency is 60 Hz. The AM broadcast radio frequency band is 0.55 MHz to
1.6 MHz. The FM broadcast radio frequency band is 88 MHz to 108 MHz. Wireless
802.11 LANs operate at 2.4 GHz.

SSID

Service Set ID. A group name shared by every member of a wireless network. Only
client PCs with the same SSID are allowed to establish a connection.

Subnet Mask

A value that defines whether your computer communicates only within your LAN or
communicates outside of your LAN, where it is routed out to the rest of the Internet.
A Subnet Mask that has the same first three components (for example,
255.255.255.0) is the routing pattern for a Class C IP address.

TCP

Transmission Control Protocol. The standard transport level protocol that provides
the full duplex, stream service on which many applications’ protocols depend. TCP
allows a process on one device to send a stream of data to a process on another.
Software implementing TCP usually resides in the operating system and uses the IP
to transmit information across the network.

USB

Universal Serial Bus. A Plug and Play standard for connecting multiple input/output
devices to a single high-bandwidth port. The design of the bus allows hot-swapping
of the devices (disconnection and reconnection without powering the computer off)
and automatic configuration.

WEP

Wired Equivalent Privacy. The optional cryptographic confidentiality algorithm
specified by 802.11. The algorithm is being used to provide data confidentiality that
is subjectively equivalent to the confidentiality of a wired LAN medium that does not
employ cryptographic techniques to enhance privacy.

Notices

Notices
Trademarks
Scientific-Atlanta and the Scientific-Atlanta logo are registered trademarks of
Scientific-Atlanta, Inc.
DPW939 and WebSTAR are trademarks of Scientific-Atlanta, Inc.
Other trademarks listed herein are the property of their respective owners.

Disclaimer
Scientific-Atlanta, Inc. assumes no responsibility for errors or omissions that may
appear in this guide. Scientific-Atlanta reserves the right to change this guide at
any time without notice.

Documentation Copyright Notice
© 2005 Scientific-Atlanta, Inc. All rights reserved.
Printed in the United States of America.
Information in this document is subject to change without notice. No part of this
document may be reproduced in any form without the express written permission
of Scientific-Atlanta, Inc.

Software Use Notice
The software described in this document is copyrighted and furnished to you
under a license agreement. You may only use or copy this software in
accordance with the terms of your license agreement.

Firmware Use Notice
The firmware in this equipment is copyrighted. You may only use the firmware in
the equipment in which it is provided. Any reproduction or distribution of this
firmware or any portion of it, without express written consent is prohibited.

Canada EMI Regulation
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du
Canada.

WebSTAR® Model DPW939™ USB Wireless LAN Adapter User’s Guide

Regulatory Compliance
FCC Part 15 Declaration of Conformity (DoC)
FCC Declaration of Conformity
This device complies with Part 15 of FCC Rules. Operation is subject to the
following two conditions: 1) the device may not cause harmful interference, and
2) the device must accept any interference received, including interference that
may cause undesired operation.
WebSTAR Model DPW939 USB Wireless LAN Adapter
Manufactured by: Scientific-Atlanta, Inc.; 5030 Sugarloaf Parkway;
Atlanta, Georgia 30044; USA
Telephone US and Canada: 1-800-283-2636 (toll-free)
Telephone outside US: 1-800-236-2200 (toll-free)
Telephone within US: +1-800-236-1077 (direct)

FCC Rules and Regulations – Part 15
This device has been tested and found to comply with the limits for a Class B
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.
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 the equipment off and
on, the user is encouraged to try to correct the interference by one or more of the
following measures:
•

Relocate your wireless LAN equipped laptop computer

•

Increase the separation between the wireless LAN equipped laptop
computer and other electronics

•

Connect the wireless LAN equipped laptop computer into an outlet on a
circuit different from that of other electronics

•

Consult the dealer or an experienced radio/TV technician for assistance

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 of 20 cm between the radiator & your body.

For Information
If You Need Technical Assistance
If you need technical assistance, contact your cable service provider.

Scientific-Atlanta, Inc.
770.236.5000

5030 Sugarloaf Parkway, Box 565447

Lawrenceville, GA 30042
www.scientificatlanta.com

Part Number 740009 Rev A

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User Access                     : Print, Fill forms, Extract, Assemble, Print high-res
Page Count                      : 50
XMP Toolkit                     : XMP toolkit 2.9.1-14, framework 1.6
About                           : uuid:0614f9e3-1745-49fd-be8f-6676ba78b6d8
Producer                        : Acrobat Distiller 6.0.1 (Windows)
Keywords                        : WebSTAR, wireless LAN, USB, DPW939
Category                        : User's Guide
Company                         : Scientific Atlanta, Inc.
Creator Tool                    : Acrobat PDFMaker 6.0 for Word
Modify Date                     : 2005:04:27 12:52:22-04:00
Create Date                     : 2005:04:27 07:12:48-04:00
Metadata Date                   : 2005:04:27 12:52:22-04:00
Document ID                     : uuid:293ead03-6619-4b6e-b28f-a37e963e99ed
Format                          : application/pdf
Title                           : User's Guide-WebSTAR Model DPW939 USB Wireless LAN Adapter
Creator                         : Robert Bruce, Jr., PMP
Author                          : Robert Bruce, Jr., PMP

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Scientific Atlanta Dpw939 Users Manual User's Guide WebSTAR USB Wireless LAN Adapter

DPW939 to the manual 3ae89297-27b1-4b28-a681-8869485a9529

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