TP Link Technologies WN727N Wireless Lite-N USB Adapter User Manual Manual
TP-Link Technologies Co., Ltd. Wireless Lite-N USB Adapter Manual
Manual
TL-WN727N
Wireless Lite-N USB Adapter
Rev:1.0.1
1910010132
I
COPYRIGHT & TRADEMARKS
Specifications are subject to change without notice. is a registered trademark
of TP-LINK TECHNOLOGIES CO., LTD. Other brands and product names are trademarks or
registered trademarks of their respective holders.
No part of the specifications 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 TP-LINK
TECHNOLOGIES CO., LTD. Copyright © 2009 TP-LINK TECHNOLOGIES CO., LTD.
All rights reserved.
http://www.tp-link.com
FCC STATEMENT
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 equipment 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 the 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.
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.
2) This device must accept any interference received, including interference that may
cause undesired operation.
Any changes or modifications not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.
II
FCC RF Radiation Exposure Statement
This device has been tested for compliance with FCC RF Exposure (SAR) limits in the typical
laptop computer configuration and this device can be used in desktop or laptop computers. This
device cannot be used with handheld PDAs (personal digital assistants). This device and its
antenna must not be co-located or operated in conjunction with any other antenna or transmitter.
SAR measurements are based on a 5mm spacing from the body and that compliance is achieved
at that distance.
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.
National restrictions
This device is intended for home and office use in all EU countries (and other countries following
the EU directive 1999/5/EC) without any limitation except for the countries mentioned below:
Country Restriction Reason/remark
Bulgaria General authorization required for outdoor use and
public service
France
Outdoor use limited to 10
mW e.i.r.p. within the band
2454-2483.5 MHz
Military Radiolocation use. Refarming of the 2.4 GHz
band has been ongoing in recent years to allow current
relaxed regulation. Full implementation planned 2012
Italy If used outside of own premises, general authorization is
required
Luxembourg None General authorization required for network and service
supply(not for spectrum)
Norway Implemented This subsection does not apply for the geographical area
within a radius of 20 km from the centre of Ny-Ålesund
Russian Federation Only for indoor applications
Note: Please don’t use the product outdoors in France.
TP-LINK TECHNOLOGIES CO., LTD
TP-LINK TECHNOLOGIES CO., LTD.
South Building, No.5 Keyuan Road, Central Zone, Science & Technology Park, Nanshan,
Shenzhen, P. R. China
DECLARATION OF CONFORMITY
For the following equipment::
Product Description: Wireless Lite-N USB Adapter
Model No.: TL-WN727N
Trademark: TP-LINK
We declare under our own responsibility that the above products satisfy all the technical
regulations applicable to the product within the scope of Council Directives:
Directives 1999/5/EC
The above product is in conformity with the following standards or other normative documents:
ETSI EN 300 328 V1.7.1: 2006
ETSI EN 301 489-1 V1.8.1:2008 & ETSI EN 301 489-17 V1.3.2:2008
EN60950-1:2006
EN62311:2008
Recommendation 1999/519/EC
Person is responsible for marking this declaration:
Zhao Jianjun
Director of International Business
CONTENTS
Package Contents ....................................................................................................1
Chapter 1 Introduction ..........................................................................................2
1.1 Product Overview.............................................................................................. 2
1.2 Main Features ................................................................................................... 2
1.3 LED Status ........................................................................................................ 2
Chapter 2 Installation Guide .................................................................................3
2.1 Hardware Installation ........................................................................................ 3
2.2 Software Installation.......................................................................................... 3
2.2.1 Overview .............................................................................................................3
2.2.2 Installation Guide ................................................................................................3
2.3 Uninstall Software ............................................................................................. 8
2.3.1 Uninstall the driver software from your PC .........................................................8
2.3.2 Uninstall the utility software from your PC..........................................................9
Chapter 3 Configuration......................................................................................10
3.1 Configuration of Utility ..................................................................................... 10
3.1.1 Profile................................................................................................................10
3.1.2 Network.............................................................................................................13
3.1.3 Advanced ..........................................................................................................14
3.1.4 Statistics............................................................................................................15
3.1.5 QSS...................................................................................................................15
3.1.6 Radio On/Off.....................................................................................................17
3.1.7 About.................................................................................................................18
3.1.8 An example for application ...............................................................................18
3.2 Configure with Windows XP Wireless Zero Configuration .............................. 19
Chapter 4 AP Mode.............................................................................................. 21
4.1 Config.............................................................................................................. 21
4.2 Access Control ................................................................................................ 22
4.3 Mac Table ....................................................................................................... 23
4.4 Event Log ........................................................................................................ 24
4.5 Statistics.......................................................................................................... 25
4.6 About............................................................................................................... 26
Chapter 5 Example for Application ....................................................................28
5.1 Configuration of PSP XLink Online game ....................................................... 28
Appendix A: Glossary......................................................................................... 33
Appendix B: Specifications................................................................................ 35
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Package Contents
The following items should be found in your package:
¾ One TL-WN727N Lite-N USB Adapter
¾ One USB extension cable (for one meter)
¾ One Resource CD for TL-WN727N Lite-N USB Adapter, including:
• Drivers and Utility
• User Guide
• Other Helpful Information
) Note:
Make sure that the package contains the above items. If any of the listed items are damaged or
missing, please contact with your distributor.
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Chapter 1 Introduction
1.1 Product Overview
Thank you for choosing the TL-WN727N Lite-N USB Adapter.
The adapter is designed to provide a high-speed and unrivaled wireless performance for your
computer. With a faster wireless connection, you can get a better Internet experience, such as
downloading, gaming, video streaming and so on.
The TL-WN727N Lite-N USB Adapter complies with IEEE 802.11g and IEEE 802.11b standards.
It can perfectly interoperate with all the 802.11n/g/b devices. The TL-WN727N’s auto-sensing
capability allows high packet transfer rate of up to 150Mbps for maximum throughput.
Additionally, the TL-WN727N adapter has good capability on anti-jamming and supports WEP,
TKIP, AES，WPA and WPA2 encryption to prevent outside intrusion and protect your personal
information from being exposed.
The adapter is easy to install and manage. The TL-WN727N supports QSS function, which can
help you create a wireless connection immediately. Quick Setup Wizard is supported and detailed
instructions are provided step by step in this user guide.
Featuring high performance transmission rates, simple installation and adaptability, as well as
strong security, the TL-WN727N Lite-N USB Adapter is the perfect solution for small office and
home needs.
1.2 Main Features
¾ Supports WPA data security, IEEE802.1x authentication, TKIP/AES encryption, 64/128-bit
WEP encryption
¾ Supports wireless LAN data transfer rate of up to 150Mbps
¾ Provides USB interface
¾ Supports Ad-Hoc and Infrastructure modes
¾ Supports roaming between access points when configured in Infrastructure mode
¾ Eases configuration and provides monitoring information
¾ Supports Windows 2000, XP, Vista
¾ Internal Antenna
1.3 LED Status
The LED on the top of this card indicates Link/Act status. It blinks at green light when sending and
receiving data.
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Chapter 2 Installation Guide
2.1 Hardware Installation
1. Connect one end of the USB cable to the Adapter.
2. Connect the other end of the USB cable to the USB port on your computer. Because the
Adapter gets its power from the host, there is no external power supply. The LED should light
up when the Adapter is plugged in and the PC is on.
) Note:
The Adapter can also be plugged into the USB port on your computer directly.
2.2 Software Installation
2.2.1 Overview
The Adapter’s Setup Wizard will guide you through the installation of the Utility and drivers for
Windows 2000, XP and Vista.
Before you install the software, please plug the adapter into your PC. After that, you will be
prompted “Found New Hardware Wizard”, click the Cancel button, and run the Setup Wizard
program on the CD-ROM.
The Setup steps for Windows 2000, XP and Vista are very similar, so the following installation
guide takes Windows XP for example.
2.2.2 Installation Guide
1. Insert the Resource CD into your CD-ROM drive, and open the folder named TL-WN727N.
Double-click Setup.exe in the proper folder according to your operating system to start the
installation, then following screen will appear. Select English and click the NEXT button to
continue.
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Figure 2-1 Choose Setup Language
2. The following screen for preparing setup will appear.
Figure 2-2 Preparing Setup
3. Then you’ll see the screen as follow, you can choose what to be installed.
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Figure 2-3 Setup Type
4. As next screen, you can select the configuration tool here.
Figure 2-4 Setup Type
I. If you want to install the TL-WN727N Wireless Utility, please select the TP-LINK
Configuration Tool and click Next.
II. If you only want to use the Microsoft Zero Configuration Tool to configure the wireless
connection, please select Microsoft Zero Configuration Tool and click Next.
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5. Then, choose the destination location.
Figure 2-5 Choose Destination Location
6. After that, you will see the next screen as below. Click Install to continue.
Figure 2-6 Ready to Install the Program
7. The following screen for installing will appear.
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Figure 2-7 Setup Status
) Note:
While files are copying, a warning box about Windows Logo testing (shown in Figure 2-8) may
pop up, please click Continue Anyway to continue the installation for our drivers have been
tested thoroughly and are able to work with the operating system.
Figure 2-8 Windows XP Warning Box
8. After the files have been successfully copied, the screen in Figure 2-9 will appear. Click the
Finish button to finish the wizard.
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Figure 2-9 InstallShield Wizard Complete
After installing the driver successfully, you should see an icon or appear in your
system tray.
2.3 Uninstall Software
2.3.1 Uninstall the driver software from your PC
1. On the Windows taskbar, click the Start button, and then click Control Panel.
2. Double-click the System icon, click on the Hardware tab in the System window.
3. Click on the Device Manager button, double-click Network Adapters, and then right-click
TL-WN727N Wireless USB Adapter.
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Figure 2-10 Device Manager
4. Click Uninstall shown in above Figure 2-10, the system will uninstall the driver software of
the adapter from your PC.
2.3.2 Uninstall the utility software from your PC
1. On the Windows taskbar, click the Start button, point to All programsÆTP-LINKÆTWCU,
and then click Uninstall-TL-WN727N.
Figure 2-11 Uninstall the utility
2. Following the Install Shield Wizard to uninstall the utility software from your PC.
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Chapter 3 Configuration
3.1 Configuration of Utility
TL-WN727N Wireless USB Adapter can be configured by its utility for Windows 2000, XP, and
Vista. This section will take the configuration in Windows XP for example and guide you to
configure your wireless adapter for wireless connectivity with trustable data security encryption
features.
The configuration steps in Windows 2000 & XP & Vista are similar. For the configurations in
Windows 2000 & Vista, please refer to the instructions in Windows XP.
After the Adapter's driver and utility has been installed, the adapter’s tray icon, or , will
appear in your system tray. It means the utility is running on your system. If the utility does not run,
you can run the utility by clicking: Start> Program> TP-LINK> TWCU> TL-WN727N Wireless
Utility. If the icon still does not appear, the driver or utility may be installed incorrectly or the
adapter is unplugged, please try again.
Icon means the connection has been established. Icon means there is no connection.
Double-click the icon and the configuration screen of the utility will appear. You can also run
the utility by clicking: Start> Program> TP-LINK> TWCU> TL-WN727N Wireless Utility. The
utility provides a complete and easy manage tools to:
¾ Display current status information
¾ Edit and add configured profiles
¾ Display current diagnostics information
) Note:
If your OS is Windows XP, you can use Windows XP to configure the wireless network settings.
(To use this function, you must upgrade the OS with sp2).
If you want to use Windows XP to configure wireless network settings, just right-click the icon
at the bottom of the screen, and click Use Zero Configuration as Configuration utility to
switch the utility.
3.1.1 Profile
Click the Profile tab of the utility and the Profile screen will appear as Figure 3-1. The Profile
screen provides tools to:
¾ Add a Profile
¾ Edit a profile
¾ Delete a profile
¾ Activate a profile
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Figure 3-1 Profile Tab
1. To Add a new profile: Click the Add button on the Profile tab, the Profile configuration
screen will appear as shown in Figure 3-2. Enter the Profile Name and choose the SSID
from the pull-down list, then click OK to add it.
Figure 3-2 Add a new profile
¾ Profile Name - Identifies the configuration profile. This name must be unique. Profile names
are not case-sensitive.
¾ SSID - The IEEE 802.11 wireless network name. This field has a maximum limit of 32
characters.
¾ RTS Threshold - Here you can specify the RTS (Request to Send) Threshold. The default
value is 2347.
¾ Fragmentation Threshold - This value is the maximum size determining whether packets
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will be fragmented. Setting the Fragmentation Threshold too low may result in poor network
performance since excessive packages. 2346 is the default setting and is recommended.
2. To edit a profile: Highlight the desired profile name on Profile List, and click the Edit button,
the Profile configuration screen will appear shown in Figure 3-3.
Figure 3-3 Edit a Profile-System Configuration
¾ System Config: Here you can change the Profile Name and SSID.
¾ Auth.\Encry.: Click the Auth.\Encry., you can skip to the following screen.
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Figure 3-4 Edit a Profile-Auth.\Encry.
¾ Authentication – You can choose the Authentication Type from the pull-down list with
three options, Open System, Shared-Key System or LEAP.
¾ 802.1x – It enables when Authentication Type is setting to WPA.
¾ Encryption – Displays which encryption type that the driver is using. When you select Open
System, Shared-Key System as Network Authentication, there are two options: WEP and
Disabled. If you select WPA-PSK as Network Authentication, there are TKIP and AES
options instead of WEP and Disabled.
¾ Wep Key – Key #1, Key #2, Key #3, Key #4, the Key groups. You can enter 10 hexadecimal
digits (any combination of 0-9, a-f, A-F) or 5 ASCII characters for 64-bit (also called 40bits)
encryption. You can enter 26 hexadecimal digits (any combination of 0-9, a-f, A-F) or 13
ASCII characters for 128-bit (also called 104bits) encryption.
3. To delete a profile: Highlight the desired profile name on Profile List, and click the Delete
button.
4. To switch to another profile: Highlight the desired profile name on Profile List, and click
the Activate button.
3.1.2 Network
Click the Network tab of the Utility and the Network screen with many available wireless network
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choices will appear as Figure 3-5.
Figure 3-5 Network tab
¾ Rescan: Click the Rescan button to refresh the list at any time.
¾ Add to Profile: Highlight an SSID and click the Add to Profile button to add the network to
the profile. The continued steps are similar to add a new profile, please refer to the 3.1.1
Profile: To Add a new profile.
¾ Connect: Highlight an SSID and double-click or click the Connect button to connect to an
available network without adding it to the profile.
3.1.3 Advanced
Click the Advanced tab of the Utility and then you can choose the wireless mode on the following
screen.
Figure 3-6 Advanced
¾ Enable TX Burst - It can translate more data when it enable.
¾ Fast Roaming at – Roaming will disable when Transmit Power is below some dBm if the
function is selected.
¾ Show Authentication Status Dialog- Click the checkbox to show the Authentication Status
Dialog.
¾ Apply - Click the Apply button to save the current setting.
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3.1.4 Statistics
Click the Statistics tab of the Utility and you will see the following screen displaying the receiving
and transmitting statistical information. Click the Reset Counter button to reset the count of the
statistics information.
Figure 3-7 Statistics tab
3.1.5 QSS
Click the QSS tab of the Utility and you can configure the QSS function to joint an existing network
quickly in the following screen.
Figure 3-8 QSS tab
¾ The QSS connection will be automatically displayed on the QSS Profile List. Pitch on the
Profile and click Export Profile to add a Profile to the Profile List (Section 3.1.1).
¾ The Auto function is default to enable that the adapter will automatically try to build the
connection with the Access Point devices shown in the QSS AP List one by one.
¾ You can also establish a wireless connection by using either Push QSS Button method or
PIN method. It is recommended that you choose the simplest method that your AP device
supports.
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) Note:
To build a successful connection by QSS, you should also do the corresponding configuration of
the Access Point for QSS or WPS function meanwhile.
I. PBC Method
If your Access Point is equipped with a push-button for Wi-Fi Protected Setup, you can connect
the adapter to the Access Point by Push QSS Button method.
Figure 3-9 QSS- QSS BUTTON mode
Step 1 Click the QSS button (marked by the red circle) on the screen as Figure 3-9.
Or: Press and hold the QSS button on the adapter (shown on the following figure) for 2 or 3
seconds.
Step 2 Press the QSS button on your Access Point device to build the connection.
II. PIN Method
If your Access Point supports Wi-Fi Protected Setup and the PIN method, you can add the
adapter to the network by the following two ways:
1) Enter a PIN from my Access Point
Choose the Config Mode as Registrar and enter the PIN of AP into the field under the Pin Code
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as Figure 3-10 shown. And then click PIN button to start the wireless connection without doing
any configuration for AP.
Figure 3-10 QSS - Registrar mode
) Note:
The default PIN code of the AP always can be found in its label or User Guide.
2) Enter the PIN into my Access Point
Choose the Config Mode as Enrollee and click the PIN button on the screen as Figure 3-11.
Meanwhile, enter the PIN code of the adapter into the configuration utility of the AP. For the
detailed instructions of the AP configuration, please refer to the User Guide of the AP.
Figure 3-11 QSS - enrollee mode
) Note:
The PIN code of the adapter is displayed on the QSS configuration screen as Figure 3-11 (the
default PIN code for this adapter is 08781949 as Figure 3-11 shown)
3.1.6 Radio On/Off
You can turn on/off the wireless radio by clicking the icon of the Utility. The green icon will turn
to red when the wireless radio is turned off.
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3.1.7 About
Click the About tab of the Utility and you will see the following screen with some information about
this adapter.
Figure 3-12 About
¾ Utility Version - The version of this utility.
¾ Utility Date - The creation date of this utility.
¾ Driver Version - The version of the wireless network adapter driver.
¾ Driver Date - The creation date of the wireless network adapter driver.
¾ Firmware Version -The version of the adapter firmware.
¾ EEPROM Version - The version of this EEPROM.
¾ Phy_Address - The MAC address of the wireless network adapter.
) Note:
For more help information, you can click the http://www.tp-link.com button on the screen to
connect to website of our company.
3.1.8 An example for application
Suppose you have an installed and using AP, the SSID is TPLINK and it adopts 64-bit encryption
with the key 0123456789. To establish a connection with this AP, please follow these steps
below:
1. Launch TL-WN727N Wireless Utility.
2. Click the Profile tab of the utility and click the Add button on the screen that appears.
3. The Profile configuration screen will appear, please enter Test for the Profile Name, TPLINK
for the SSID, select Infrastructure for the Network Mode, select WEP for the Data Encryption
and enter 0123456789 for Network key.
4. Click OK to save this profile.
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5. Highlight the profile named Test on the profile list and click Activate on the Profile screen.
The utility will establish a connection with this AP by configured profile.
3.2 Configure with Windows XP Wireless Zero Configuration
1. Right click the icon on the bottom of the desktop first and you will see Figure 4. Double
click the Use Zero Configuration as Configuration utility option to enable Wireless Zero
Configuration function.
Figure 3-13 Use Zero Configuration as Configuration utility
2. After that, double click the icon , and the following Figure 3-14 will appear with some
available wireless network choices. You can highlight a network and then click Connect to
add to a network.
Figure 3-14 Choose a wireless network
) Note:
If you have not installed SP2 for Windows XP, the screen above will not be available.
3. During the connection, you will see the screen as Figure 3-15 shown.
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Figure 3-15 Acquiring network address
4. If the connection is finished, the icon will display like the next screen shown.
Figure 3-16 Finish
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Chapter 4 AP Mode
Click the icon to switch to AP Mode. In this mode you can use the TL-WN727N as a soft AP.
Figure 4-1
) Note:
At this time, if your PC have Installed other network card (wireless or wire), you will be prompted
“ICS Select WAN Adapter” to select one of them to be “WAN”. With this function TL-WN727N can
serve as wireless router based on the selected card connecting to the Internet, which will make
the APs of the LAN share the Internet.
Figure 4-2
4.1 Config
Here you can do some basic configurations.
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Figure 4-3 Config Setting Page
¾ SSID – Enter the SSID of your soft AP, or you can press “<- Use Mac Address” button to
keep the Mac Address as your SSID.
¾ Channel – Select the channel from the drop-down list. This field determines which operating
frequency will be used.
¾ Beacon – Enter a value between 20-1000 milliseconds for Beacon Interval here. The
beacons are the packets sent by the router to synchronize a wireless network. Beacon
Interval value determines the time interval of the beacons. The default value is 100.
¾ TX Power –Manually force the AP’s transmitting power. System default is 100%.
¾ Idle Time - Manually force the Idle Time using a selected value. The default is 300.
4.2 Access Control
Click the Access Control tab of the utility and the Access Control screen will appear as Figure
4-4. In this page, you can enable/disable the AP to connect with the specified Mac address.
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Figure 4-4 Access Control Function
¾ Access Policy – This field allows you to start the function or not. System default is disabled.
• Disable - Disable the Access Policy feature.
• Allow All - Allow all the MAC addresses in the Access List to access the AP.
• Reject All - Disable all the MAC addresses in the Access List to access the AP.
¾ Mac Address – Manually force the Mac address using the function, and press Add to
Access List.
¾ Access List – Display all Mac Addresses that the user has set.
4.3 Mac Table
Figure 4-5 shows the link status page. It displays detailed station information of current
connection.
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Figure 4-5 Mac Table Function
¾ MAC Address – The station’s Mac address of the current connection.
¾ AID – Raise value by current connection.
¾ Power Saving Mode – Support Power Saving Mode on the currently connected station.
¾ Status – The link status of the current connection.
4.4 Event Log
A record of all event times and messages, shown as below.
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Figure 4-6 Event Log Page
¾ Event Time (yy/mm/dd-hh:mm:ss) – Displays the event time recorded.
¾ Message – Displays all event messages.
4.5 Statistics
The statistics page displays detailed counter information based on the 802.11 MIB counters. The
information is translated into a format easier for the user to understand.
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Figure 4-8 About Page
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Chapter 5 Example for Application
5.1 Configuration of PSP XLink Online game
Please ensure the software and hardware environments are well established before configuring.
For hardware, at least a PC, a TL-WN727N Wireless Lite-N USB Adapter and a PSP device are
needed. For software, the TL-WN727N Adapter driver should be properly installed.
Please operate as follows:
Step 1. Connect the website of X-LINK http://www.teamxlink.co.uk to register, and download the
latest software of X-LINK Kai.
Step 2. Install the X-LINK Kai software, click Start > Program > XLink Kai > Configure Kai,
then set as Figure 5-1.
Figure 5-1
Step 3. After completing the settings, please click Start > Program > XLink Kai > Start Kai to
connect to XLink Kai.
Step 4. Open the wireless mode of the PSP device, then start an internet game.
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Step 5. Right-click “My Computer” and select Management. In the prompt page, click Device
Manager, then right-click “TL-WN727N Wireless Lite-N USB Adapter “and select
Properties. Then set the value of “PSP Xlink Mode” as Enable following the red marked
instruction in the figure.
Figure 5-2
Step 6. Click Start > Control Panel > Network.
Figure 5-3
Step 7. Right-click Wireless Network Connection icon , and select Properties. In the
following prompt page, highlight Internet Protocol(TCP/IP) and click Properties
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Figure 5-4
Step 8. In the prompt page shown below, select Use the Following IP Address, and set the IP
and Subnet mask. After completing setting, click OK.
Figure 5-5
) Note: Please set the IP address in different network segment with the other network
card to avoid conflict.
Step 9. Launch TL-WN727N Wireless Utility, then highlight the Network Name (SSID) beginning
with “PSP” in the “Network” page, and click Connect.
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Figure 5-6
Step 10. Check whether your PSP device is detected in the Diagnostics mode of Kai as Figure
5-7 shown: Click the icon first and then click the folder .
Figure 5-7
Step 11. Click the icon on the right top corner to enter the Arena Mode, highlight the arena of
your wanted game, and then join or start a new game.
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Figure 5-8
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Appendix A: Glossary
802.11b - The 802.11b standard specifies a wireless networking at 11 Mbps using
direct-sequence spread-spectrum (DSSS) technology and operating in the unlicensed radio
spectrum at 2.4GHz, and WEP encryption for security. 802.11b networks are also referred to as
Wi-Fi networks.
802.11g - Specification for wireless networking at 54 Mbps using direct-sequence
spread-spectrum (DSSS) technology, using OFDM modulation and operating in the unlicensed
radio spectrum at 2.4GHz, and backward compatibility with IEEE 802.11b devices, and WEP
encryption for security.
Ad-hoc Network - An ad-hoc network is a group of computers, each with a wireless adapter,
connected as an independent 802.11 wireless LAN. Ad-hoc wireless computers operate on a
peer-to-peer basis, communicating directly with each other without the use of an access point.
Ad-hoc mode is also referred to as an Independent Basic Service Set (IBSS) or as peer-to-peer
mode, and is useful at a departmental scale or SOHO operation.
DSSS (Direct-Sequence Spread Spectrum) - DSSS generates a redundant bit pattern for all data
transmitted. This bit pattern is called a chip (or chipping code). Even if one or more bits in the chip
are damaged during transmission, statistical techniques embedded in the receiver can recover
the original data without the need for retransmission. To an unintended receiver, DSSS appears
as low power wideband noise and is rejected (ignored) by most narrowband receivers. However,
to an intended receiver (i.e. another wireless LAN endpoint), the DSSS signal is recognized as the
only valid signal, and interference is inherently rejected (ignored).
FHSS (Frequency Hopping Spread Spectrum) - FHSS continuously changes (hops) the carrier
frequency of a conventional carrier several times per second according to a pseudo-random set of
channels. Because a fixed frequency is not used, and only the transmitter and receiver know the
hop patterns, interception of FHSS is extremely difficult.
Infrastructure Network - An infrastructure network is a group of computers or other devices,
each with a wireless adapter, connected as an 802.11 wireless LAN. In infrastructure mode, the
wireless devices communicate with each other and to a wired network by first going through an
access point. An infrastructure wireless network connected to a wired network is referred to as a
Basic Service Set (BSS). A set of two or more BSS in a single network is referred to as an
Extended Service Set (ESS). Infrastructure mode is useful at a corporation scale, or when it is
necessary to connect the wired and wireless networks.
Spread Spectrum - Spread Spectrum technology is a wideband radio frequency technique
developed by the military for use in reliable, secure, mission-critical communications systems. It is
designed to trade off bandwidth efficiency for reliability, integrity, and security. In other words,
more bandwidth is consumed than in the case of narrowband transmission, but the trade off
produces a signal that is, in effect, louder and thus easier to detect, provided that the receiver
knows the parameters of the spread-spectrum signal being broadcast. If a receiver is not tuned to
the right frequency, a spread-spectrum signal looks like background noise. There are two main
alternatives, Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread
Spectrum (FHSS).
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SSID - A Service Set Identification is a thirty-two character (maximum) alphanumeric key
identifying a wireless local area network. For the wireless devices in a network to communicate
with each other, all devices must be configured with the same SSID. This is typically the
configuration parameter for a wireless PC card. It corresponds to the ESSID in the wireless
Access Point and to the wireless network name.
WEP (Wired Equivalent Privacy) - A data privacy mechanism based on a 64-bit or 128-bit shared
key algorithm, as described in the IEEE 802.11 standard.
Wi-Fi - A trade name for the 802.11b wireless networking standard, given by the Wireless
Ethernet Compatibility Alliance (WECA, see http://www.wi-fi.net), an industry standards group
promoting interoperability among 802.11b devices.
WLAN (Wireless Local Area Network) - A group of computers and associated devices
communicate with each other wirelessly, which network serving users are limited in a local area.
WPA (Wi-Fi Protected Access) - A wireless security protocol use TKIP (Temporal Key Integrity
Protocol) encryption, which can be used in conjunction with a RADIUS server.
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Appendix B: Specifications
General
Interface A-type USB 2.0 Connector
Standards IEEE 802.1g, IEEE 802.1b
Operating System Windows 2000, XP, Vista
Safety & Emission FCC, CE
Frequency 2412MHz---2462MHz for USA and 2412MHz-2472MHz for
Europe
Sensitivity
150M -68dBm
54M -68dBm
11M -83dBm
Spread Spectrum Direct Sequence Spread Spectrum (DSSS)
Wireless
Radio Data Rate Up to 150Mbps
Modulation 11n OFDM, 11g OFDM , 11b CCK/DSSS
Media Access Protocol CSMA/CA with ACK
Transmit Power Typical 15dBm, 18dBm(Max)
Data Security WPA, 64/128 bit WEP, TKIP/AES, IEEE 802.1X authentication
Physical Environmental
Working Temperature 0℃～40℃ (32℉～104 )℉
Storage Temperature -40℃～70℃ (-40℉～158 )℉
Humidity 10%～90% RH, Non-condensing