TwinMOS Technologies WGSZB1 WIRELESS LAN PRODUCT USB DONGLE User Manual USERS MANUAL

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Document Description	USERS MANUAL
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Date Submitted	2004-10-29 00:00:00
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Creation Date	2004-10-18 18:50:50
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Document Title	Microsoft Word - G245 WLAN Card User Manual_English_v1.1.doc
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Document Author:	linda

TwinMOS
802.11g Series
G245
Wireless LAN Adapter
User’s Manual
TwinMOS®
G245 WLAN Card
Contents
PACKAGE CONTENTS………………………........................................................2
INTRODUCTION.................……………………......................................................3
WIRELESS NETWORK OVERVIEW..………………….........................................4
G245 WIRELESS NETWORK SCENARIOS…………….………………………6
INSTALLATION FOR WINDOWS (XP/2000/98SE)…………….........................…..9
CONFIGURATION UTILITY …………………………….........................…..32
WIRELESS BRIDGE MODE………………….…….…………………..52
TROUBLESHOOTING.......…………....................................……………........…..53
TECHNICAL SPECIFICATIONS.…………...........…………............................…..54
FCC CAUTION……………………………………………………………….........…..56
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PACKAGE CONTENTS
Unpack your G245 WLAN adapter kit and verify that all items are present.
G245 Wireless LAN Adapter
User’s Manual (on CD)
Driver (on CD)
USB Cable
If any of the items described appear to be damaged or missing, please contact your reseller.
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INTRODUCTION
The G245 WLAN adapter is a wireless network client that complies with the IEEE 802.11g standard on
wireless LANs. The IEEE 802.11g standards compliance means this adapter gives you the flexibility to
connect it to any 802.11g network. The IEEE 802.11g Ethernet standard allows you to connect
computers and devices at speeds up to 11Mbps, dependent upon the distance between wireless adapters,
the configuration of your working environment, or the capabilities or limitations of your computer
systems.
This G245 WLAN Adapter supports following WLAN features：
Automatic transmit data rate select mechanism in the transmit range of 1, 2,
5.5,6,9,11,12,18,24,36,48 and 54 Mbps.
Center frequency channel selection (2.4 GHz)
Roaming over multiple channels.
Supports USB interface
Supports power save mode
128-bit Wired Equivalent Privacy (WEP) data encryption.
Plug and Play installation
This G245 comes with software drivers for the most popular Microsoft Windows operating systems and
can be integrated into a larger network, running Windows XP, Windows 2000, Windows ME, or
Windows 98 in either Ad-Hoc mode or infrastructure mode. This manual provides a quick introduction
to wireless technology and its application as it relates to networking. Take a moment to read through this
manual and familiarize you with wireless technology. You should also give yourself some time to
become familiar with your new wireless network.
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WIRELESS NETWORK OVERVIEW
A wireless local area network (LAN) is a flexible data communications system implemented as an
extension to, or as an alternative for, a wired LAN. Using radio frequency (RF) technology, wireless
LANs transmit and receive data over the air, minimizing the need for wired connections. Thus, wireless
LANs combine data connectivity with user mobility.
A local area network that transmit and receive over the air typically in an unlicensed frequency such as
the 2.4GHz band. A wireless LAN does not require lining up devices for line of sight transmission like
IrDA. Wireless access points (base stations) are connected to an Ethernet hub or server and transmit a
radio frequency over an area of several hundred to a thousand feet which can penetrate walls and other
nonmetal barriers. Roaming users can be handed off from one access point to another like a cellular
phone system. Laptops use wireless modems that plug into an existing Ethernet port or that are self
contained on PC cards, while stand-alone desktops and servers use plug-in cards (ISA, PCI, etc.).
Wireless LANs offer the following productivity, convenience, and cost advantages over traditional wired
networks：
Mobility - WLAN provide LAN users to access data in any location within the operating range of the
WLAN. Ad-hoc management decisions based on real-time information can significantly improve worker
efficiency.
Installation Speed and Simplicity - Installing a wireless LAN system can be fast and easy and can
eliminate the need to pull cable through walls and ceilings.
Installation Flexibility - Wireless technology allows the network to go where wire cannot go.
Reduced Cost-of-Ownership - While the initial investment required for wireless LAN hardware can
be higher than the cost of wired LAN hardware, overall installation expenses and life-cycle costs can be
significantly lower. Long-term cost benefits are greatest in dynamic environments requiring frequent
moves and changes.
Scalability - Wireless LAN systems can be configured in a variety of topologies to meet the needs of
specific applications and installations. Configurations are easily changed and range from peer-to-peer
networks suitable for a small number of users to full infrastructure networks of thousands of users that
enable roaming over a broad area.
Installation Considerations
Designed to go up to 300 feet (100 meters) indoors and up to 900 feet (273 meters) outdoors, G245
WLAN adapter lets you access your network from virtually anywhere you want. Keep in mind, however,
that the number and thickness of walls, ceilings or other objects that the wireless signals must pass thru
may limit range. Typical ranges vary depending on the types of materials and background RF noise in
your home or business. The key to maximizing range is to follow these basic principles:
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Keep the number of walls and ceilings between the access point and your receiving device to a minimum
- Each wall or ceiling can reduce your TwinMOS G245 Wireless product’s range from 3-90 feet (1-30
meters.) For some businesses or for a large residential home deployment, it may be more beneficial to
have more than one access point with overlapping coverage.
1.
Be aware of the direct line between Access Points, Residential Gateways, and Computers - A wall
that is 1.5 feet thick (.5 meters), at a 45-degree angle appears to be almost 3 feet (1 meter) thick. At
a 2-degree angle it looks over 42 feet (14 meters) thick! Try to make sure that the Access Points and
Adapters are positioned so that the signal will travel straight through a wall or ceiling for better
reception.
2.
Building Materials make a difference - A solid metal door or aluminum studs may have a negative
effect on range. Try to position Access Points, Residential Gateways, and Computers so that the
signal passes through drywall or open doorways and not other materials.
3.
Make sure that the antenna is positioned for best reception by using the software signal strength
tools included with your product.
4.
Keep your product away (at least 3-6 feet or 1-2 meters) from electrical devices that generate RF
noise, like microwaves, monitors, electric motors, etc.
For the average residence, range should not be a problem. If you experience low or no signal strength in
areas of your home that you wish to access, consider positioning the Access Point in a location directly
between the Residential Gateways and/or Computers that will be connected. Additional Access Points
can be connected to provide better coverage in rooms where the signal does not appear as strong as
desired.
Using radio frequency (RF) technology, WLANs transmit and receive data over the air, minimizing the
need for wired connections. Thus, WLANs combine data connectivity with user mobility, and, through
simplified configuration, enable movable LANs.
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G245 WIRELESS NETWORK SCENARIOS
The G245 WLAN adapter enables you to:
Connect your computer to an Ad-Hoc workgroup of wireless computing devices (see Figure 1-1 on
page 6).
Connect your computer to a Small Office/Home Office (SOHO) network that includes a Residential
Gateway (RG) access point (see Figure 1-2 on page 7).
Connect your computer to a Local Area Network (LAN) Infrastructure that includes Access Points, or
other IEEE 802.11 compliant LAN systems (see Figure 1-3 and Figure 1-4).
Expand the capabilities of your Access Points, to support wireless devices that have been equipped
with G245.
Ad-Hoc Workgroup
The Ad-Hoc workgroup configuration enables you to quickly set up a small wireless workgroup, where
the workgroup participants can exchange files using features like “Files and Printer Sharing” as
supported by Microsoft Networking.
Figure 1-1 Ad-Hoc Wireless Workgroup
You can use this option to setup a temporary or ad-hoc network in environments where no access points
are available (for example in Small Office/Home Office (SOHO) environments). As long as the stations
are within range of one another, this is the easiest and least expensive way to set up a wireless network.
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Home Networking
With the TwinMOS G245 WLAN adapter, wireless access to the Internet or other computers is at your
fingertips. All you need to do is connect the wireless computers to an external cable, an xDSL or a ISDN
modem and you are ready to：
Share files and printers, and
Access the Internet
xDSL
Figure 1-2 Connect to a Residential Gateway (RG)
Enterprise Networking
With the 11 Mbps Wireless LAN access point you can connect to a corporate Local Area Network (LAN)
infrastructure to have wireless access to all network facilities. LAN Infrastructures may either be:
Stand-alone wireless LANs (Figure 1-3).
Wireless network infrastructures connected to an existing Ethernet network (Figure 1-4).
Figure 1-3 Stand Alone Wireless LAN
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Figure 1-4 LAN Infrastructure
It’s Easy
The G245 functions like any standard wired Ethernet card, but G245 does not need any wires!
Where an Ethernet card requires a cable connection to a hub and/or patch panel, the cable physically ties
you down to the location of the wired connection.
G245 allows you to connect your computer to a Local Area Network (LAN) system from anywhere
within the wireless coverage area. Expanding or re-designing your network is easy: Add or relocate
access point, power-up your (new) wireless computers, and you’re done!
Unlike Ethernet, TwinMOS G245 will enable you to roam throughout the network while remaining
connected to the LAN.
Note：The G245 wireless adapter is a radio product. Refer to the flyer ”Information to the User” for
regulatory information that may apply in your country.
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INSTALLATION FOR WINDOWS (XP/2000/98SE)
The following section will assist you to install G245 WLAN adapter successfully. You will install driver
firstly and then plug in the G245 WLAN adapter, and finally set the network properties to accommodate
resource sharing and select the type of wireless network that you want to install.
In order to establish your wireless network connection, make sure some steps below will be performed.
■ Install the Access Point (AP) at first if you use Access Point network mode.
■ Install the driver using the Installation CD.
■ Plug in the G245 wireless LAN adapter.
■ Install the network protocol(s) required to communicate on your network. Most likely you will
need the TCP/IP protocol.
The Octopus Wireless LAN Configuration Utility is installed simultaneously with the driver by
executing the Setup.exe file. Note also that some versions of Microsoft Windows operating systems
require administrator to install software. If this is the case for your operating system, be sure that you
have such privileges before executing the Setup.exe file. To upgrade an existing driver, it is not
necessary to remove your Octopus driver from your computer. Simply run the Setup.exe file to replace
the existing driver with the latest version. After the new driver is installed, maybe you must restart the
operating system (depend on the Windows’ OS).
Please follow the following steps one by one in order to install the G245 WLAN adapter successfully.
Before you proceed with the installation, please notice following descriptions.
Note1: After running the driver package, the Notebook (or PC) with Win98 OS shall be restarted, for
Win2000 or WinXP OS the Notebook (or PC) doesn’t need to be restarted.
Note2: Please do not insert USB Stick adapter into USB port of your computer until Application setup
has been completed.
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For Windows XP
Install the Driver and Utility
1. Insert the CD into the CD-ROM device and execute the "G245_4618A.exe" program of your
purchace G245 to select. The InstallShield Wizard box will appear, click "Next" to continue.
2. Choose install folder
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Don’t care below to click "Continue Anyway" button to next setp
3. Insert the G245 WLAN adapter into the USB port of your computer, the system will automatically
find the device and search for its software.
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Please wait while the wizard installs the software.
Don’t care below to click "Continue Anyway" button to next setp
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Please wait while the wizard installs the software.
Completing the "G245 Series USB Adapter" installing the software.
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Using the Utility of G245 adapter
Note: If you don’t disable the XP’s Utility, you can not use function of the adapter’s
utility.
1.The way disable the XP’s Utility, please do the following:
Clicking on the utility icon.
Click “Yes”.
The “TwinMOS WLAN Configuration” screen will appear.
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2.The another way disable the XP’s Utility, please do the following:
Get into Windows XP’s utility, click "Advanced" button.
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In “Wireless Network Connection Properties“ screen, uncheck the setting “Use Windows to
configure my wireless network settings“. Note that if you want to change back to the Windows
XP built-in utility, check the item again.
Please click “Start->All programs->G245 IEEE 802.11g Wireless LAN - USB ->TMWLan
Utiliy” or to Double-click on the icon shown below.
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The “TwinMOS Wireless LAN Configuration Tool Plus” screen will appear. Double click the
icon and start using the WLAN USB Stick Adapter.
The “TwinMOS Wireless LAN Configuration Tool Plus” screen show below.
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Using the Windows XP’s Utility
To connect to your wireless network, please do the following:
◎Double-click the icon marked in red in the taskbar and you may start using the Windows XP’s
wireless utility
To click "Properties" to next step.
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◎ The “Connect to Wireless Network” window will contain a list of all the available Wireless
Networks. Select the proper network for your needs. In this example, “Corega” network was selected
as shown.
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Using WPA of the Windows XP’s Utility
Note1: Before use the WPA feature, please install Windows XP Service Pack 1 with
Windows XP Support Patch for Wi-Fi Protected Access program
Note2: Configure the card by Wireless built-in utility (Wireless Zero Configuration).
Note3: All devices in the network should use the same encryption method to ensure the
communication.
Wi-Fi Protected Access (WPA) is a specification of standards-based, interoperable security
enhancements that strongly increase the level of data protection (encryption) and access control
(authentication) for existing and future wireless LAN systems. The technical components of
WPA include Temporal Key Integrity Protocol (TKIP) for dynamic key exchange, and 802.1x
for authentication.
Example :
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1: Right click the icon to select “View Available Wireless Networks”.
2: Click “Advanced” button from “Wireless Network Connection”.
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3: Click“Configure” button to configure the WPA function for the current network.
Network Authentication
‧Open –No authentication is needed among the wireless network.
‧Shared – Only wireless stations using a shared key (WEP Key identified) are allowed to
connecting each other.
‧WPA – This mode is for enterprise with an authentication server (Radius Server), WPA-enabled
access point, and a WPA-enabled client. Once WPA is enabled, all clients and access
points on the network must be WPA-enabled in order to access the network.
‧WPA-PSK – It is a special mode designed for home and small business users who do not have
access to network authentication servers. In this mode, known as Pre-Shared Key, the
user manually enters the starting password in their access point or gateway, as well as
in each PC on the wireless network. WPA takes over automatically from that point,
keeping unauthorized users that don't have the matching password from joining the
network, while encrypting the data traveling between authorized devices.
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Data Encryption
‧Disabled –Disable WEP by the “Data encryption” drop down menu..
‧WEP – In WPA or WPA-PSK mode, WEP is also able to be the encryption method for the
transmission data.
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For Windows 2000
Install the Driver and Utility
1. Insert the CD into the CD-ROM device and execute the "G245_4618A.exe" program of your
purchace G245 to select. The InstallShield Wizard box will appear, click "Next" to continue.
2. Choose install folder
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Don’t care below to click "Yes" button to next setp.
2. Insert the G245 WLAN adapter into the USB port of your computer, the system will automatically
find the device and search for its software then the InstallShield Wizard finished installation and the
system tray icon is loaded in the taskbar (see illustration below.).
Don’t care below to click "Yes" button to next setp.
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Found New Hardware and Installing.
Complete device install.
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Please click “Start->programs->G245 IEEE 802.11g Wireless LAN - USB ->TMWLan
Utiliy” or to Double-click on the icon shown below.
The “TwinMOS Wireless LAN Configuration Tool Plus” screen will appear. Double click the
icon and start using the WLAN USB Stick Adapter.
The “TwinMOS Wireless LAN Configuration Tool Plus” screen show below.
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For Windows 98SE
Install the Driver and Utility
1. Insert the CD into the CD-ROM device and execute the "G245_4618A.exe" program of your
purchace G245 to select. The InstallShield Wizard box will appear, click "Next" to continue.
2. Choose install folder
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3. After running the driver package, the Notebook (or PC) with Win98 OS shall be restarted
4.Insert the G245 WLAN adapter into the USB port of your computer, the system will automatically
find the device and search for its software then the InstallShield Wizard finished installation and the
system tray icon is loaded in the taskbar (see illustration below.).
New Hardware Found
Please insert the disk labeled "Windows 98 Second Edition CD-ROM."
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To Choose Windows 98SE installing folder
Copying Files
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Please click “Start->programs->G245 IEEE 802.11g Wireless LAN - USB ->TMWLan
Utiliy” or to Double-click on the icon shown below.
The “TwinMOS Wireless LAN Configuration Tool Plus” screen will appear. Double click the
icon and start using the WLAN USB Stick Adapter.
The “TwinMOS Wireless LAN Configuration Tool Plus” screen show below.
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CONFIGURATION UTILITY
The status of utility icon shown below.
AP_Mode Status
Windows Zero Configuration Status
Connect Status
Disconnect Status
Exit TMConfig
Right-click on the icon shown below
Clicking on the “Exit TMConfig” Button will leave the Configuration Utility.
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Note: The following Configuration Utility was operated under Windows 2000. (Procedures will be the
same for Windows 98SE/XP.)
TwinMOS G245 uses the Configuration Utility as the management software. The utility provides the
user an easy interface to change any settings related to the wireless adapter. When the computer is
started, the Configuration Utility starts automatically and the system tray icon is loaded in the toolbar
(see illustration below.) Clicking on the utility icon will start the Configuration Utility.
Double-click on the icon shown above. The screen below will appear.
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Available Network
This screen shows all Access Points or Adapters nearby when operating in Ad-Hoc mode. Click
“Refresh” button to collect the SSID and Strength information of all the wireless devices nearby. If you
want to connect to any device on the list, double-click the item on the list, and the adapter will
automatically connect to the selected device.
Link Quality
This bar indicates the quality of the link. The higher the percentage, the better the quality.
Options
Show Signal Strength
Signal Strength
This bar shows the signal strength level. The higher percentage shown in the bar, the more
radio signal been received by the adapter. This indicator helps to find the proper position of
the wireless device for quality network operation.
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Show Power Level
Power Level
This bar shows the power level. The higher dBm value shown in the bar, the more radio power
been transmited by the AP. This indicator helps to find the proper position of the wireless
device for quality network operation.
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Show Distance
Distance to AP
This bar shows the distance to AP. The higher value shown in the bar, the more distance
between adapter with AP. This indicator helps to find the proper position of the wireless
device for quality network operation.
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General Connection Setting Group
Select the More Setting Page to access the Configuration menu, as shown below. You can make changes
to any of the fields shown below, without the need to restart your computer.
Channel
When “Ad-Hoc ” mode is selected, the utility will provide a selection for setting the channel.When
communicating in Ad-Hoc mode, you must specify a channel on which communications will take place.
This field is grayed in infrastructure mode because the Access Point automatically selects the channel.
Tx Rate
The Transmit Rate field specifies the rate at which the radio in your G245 WLAN adapter transmits and
receives data. You can set this to the following fixed rates: 1 Mbps; 2Mbps; 5.5 Mbps; 6 Mbps; 9 Mbps;
11 Mbps; 12 Mbps; 18 Mbps; 24 Mbps; 36 Mbps; 48 Mbps or 54 Mbps.
Auto - When it is enabled, the device will choose the most suitable transmission rate automatically.
SSID
The name of the wireless network. This name cannot be longer than 32 characters. The default value is
“any”, which will automatically scan and connect the best performance Access point nearby. You may
specify a SSID for the adapter and then only the device with the same SSID can interconnect to the
adapter.
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any
Click “any” button to enable SSID.
Network Type
The G245 WLAN adapter can operate in one of two modes, which are specified in the Mode field of the
Configuration menu. Clicking the down arrow at the right of the Mode field displays the available
modes.
Ad-Hoc - This is the 802.11g Ad-Hoc mode of operation. In “Ad-Hoc” mode, only one wireless
“ cell ” is supported for each different NETWORK NAME. All communication is done from
client to client without the use of an Access Point. “Peer-to-Peer” networking uses the same
NETWORK NAME for the wireless adapters in establishing the network connection. When
“Ad-Hoc ” mode is selected, the utility will provide a selection for setting the channel.
Infrastructure - This mode of operation requires the presence of an 802.11g Infrastructure. All
communication is done through the Infrastructure, which relays packets to other wireless clients
as well as to nodes on a wired Ethernet network.
Pseudo IBSS - This mode is for manufacture testing.
Encryption
Select the “Enable WEP” or “Disable WEP” by the “Encryption” drop down menu.
Authentication Mode
This setting has to be consistent with the wireless devices, which the adapter intends to connect.
‧ Auto – Auto switch the authentication algorithm depending on the wireless devices, which the
adapter is connecting to.
‧ Open System – No authentication is needed among the wireless devices.
‧ Shared Key – Only wireless devices using a shared key (WEP Key identified) are allowed to
connecting each other. Setup the same key as the wireless devices, which the adapter intends to connect.
Change
Click “Change” button to enable General Connection Setting Table.
Apply
Click “Apply” button to save and implement the new settings.
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Encryption Setting Group
“WEP Key Setting” page allows you to enhance the security of a network. Every station in a secured
network should enable the Encryption function and the values of the Network Key should be the same.
Key Length
You may select the 64-bit or 128-bit to encrypt transmitted data. Larger key length will provide higher
level of security, but the throughput will be lower.
Default Key ID
Select one of the keys (1~4) as the encryption key.
Key Format
‧Hexdecimal –Input digit Hex value to key value.
‧ ASCII –Input ascii value to key value.
Key Value
The keys are used to encrypt data transmitted in the wireless network. Fill the text box by following the
rules below.
‧ 64-bit – Input 10 digit Hex values (in the “A-F”, “a-f” and “0-9”range) as the encryption keys. For
example: “0123456aef“.
‧ 128-bit – Input 26 digit Hex values (in the “A-F”, “a-f” and “0-9” range) as the encryption keys. For
example:“01234567890123456789abcdef“.
‧ 256-bit – Input 58 digit Hex values (in the “A-F”, “a-f” and “0-9” range) as the encryption keys.
example: “012345678901234567890123456789ab “.
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“WPA Encryption Setting” page
Click “WPA Encryption Setting Button” get into “WPA Setting” page
Change
Click “Change” button
to enable WPA Setting Table.
Apply
Click “Apply” button to save and implement
the new settings.
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Connect Information
Select the Connect Information by the “Protocol” down drop menu.
PEAP is another Cisco developed protocol. It encompasses EAP and provides the ability to seamlessly
roam between access points. This protocol should function like LEAP and be transparent with respect
to the RADIUS authentication protocol. More study of this protocol is necessary.
TLS is the next generation of SSL encryption. EAP uses TLS to create a secure tunnel through which
authentication and encryption keys can be passed. EAP-TLS requires server and client side
keys. Microsoft has implemented EAP-TLS authentication in the Windows XP operating system, with
a focus on the Microsoft Active Directory as the authentication engine.
Pre-shared Key
WPA and 802.11i provide for a Pre-Shared Key (PSK) as an alternative to 802.1X based key
establishment. A PSK is a 256 bit number or a passphrase 8 to 63 bytes long. Each station MAY have its
own PSK, tied to its MAC address. To date, vendors are only providing for one PSK for an ESS, just as
they do for WEP keying.
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Profile Group
Select the profile that has been saved previously from the “Profile name” drop down menu, then press
“Load ” button to load the status to use.
Write the profile name on the field of “Profile name”, and press the “Save Current” button to save the
current status on the profile.
Select the profile name that wanted to delete from the “Profile name” drop down menu, and press
“Delete” button to delete it
Profile name
A profile is a named set of operating parameters for your G245 WLAN adapter. The Profile field lets
you set values for all parameters by selecting a previously defined profile. Click the down arrow at the
right of the Profile field to display the available profiles for your G245 WLAN adapter.
Other Group
Press the “Advanced Setting” button, then the Advanced Setting page is shown as below.
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User Interface Group
Select the Window User Interface by the “Language” down drop menu.
If the English item is selected, all functions of window are described with English. Select the Traditional
Chinese item, and they are described with Traditional Chinese.
Power Consumption Setting Group
which power save level want to be set by checking CAM Mode, Fast Power-Saving mode or Maximum
Power-Saving mode. The default is CAM mode. If the most save mode want to use, select the Maximum
Power-Saving mode, but it throughput is lower than CAM and Fast Power-Saving mode.
The throughput of “Fast Power-Saving mode” is better than “Maximum Power-Saving mode”, but its
power save is less than “Maximum Power-Saving mode”.
Country Roaming Group
“Country Roaming” group, the default depends on the region of EEPROM. Select other region from
“User Select” drop down menu, or check “World Mode” item to set it to the word mode. When the word
mode is set, it depends on the behavior of AP. If the WLAN card is re-plug , the setting will return to
default setting.
Fragmentation Threshold Group
The value defines the maximum size of packets, any packet size larger than the value will be fragmented.
If you have decreased this value and experience high packet error rates, you can increase it again, but it
will likely decrease overall network performance. Select a setting within a range of 256 to 2346 bytes.
Minor change is recommended.
RTS/CTS Threshold Group
Minimum packet size required for an RTS (Request To Send). For packets smaller than this threshold,
an RTS is not sent and the packet is transmitted directly to the WLAN. Select a setting within a range of
0 to 2347 bytes. Minor change is recommended.
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Press the “Information” button, then the Advanced Setting page is shown as below.
The Information Page provides information on the version of the Network Driver, the Configuration
Utility. In addition, this page also provides the MAC address of the USB Stick adapter , as shown in the
following illustration.
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Configuration Utility of G245 AP
TwinMOS G245 uses the Configuration Utility as the software AP. The utility provides the user an easy
interface to change any settings related to the G245 AP. Select the “Access Point” by the “Mode” down
drop menu to start the software AP.
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This page as below will appear.
Connect Station List
This screen shows all Adapters nearby. The " Station MAC Address " Show information of all the
wireless devices nearby.
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General Connection Setting Group
To Get into the “Access Point Setting Page” with clicking button “More Setting” to access the
Configuration menu, as shown below. You can make changes to any of the fields shown below, without
the need to restart your computer.
Change
Click “Change” button to enable “General Connection Setting” page to Change the current settings.
Apply
Click “Apply” button to save and implement the new settings.
Channel
When communicating in Ad-Hoc mode, you must specify a channel on which communications will take
place. This field is grayed in infrastructure mode because the Access Point automatically selects the
channel.
Basic Rate
The Basic Rate field specifies the rate at which the radio in your G245 AP transmits and receives data.
You can set this to the following fixed rates: 1, 2 Mbps or 1, 2, 5.5, 11 Mbps or 1, 2, 5.5, 11, 6, 12, 24,
Max 54 Mbps or 6, 12, 24 ,Max 54 Mbps (g only).
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SSID
The name of the wireless network. This name cannot be longer than 32 characters. You may specify a
SSID for the G245 AP and then only the device with the same SSID can interconnect to the AP.
Hide SSID
“Hide SSID” check box allows you to hide SSID of Soft AP.
Tx Power
The G245 AP can operate in one of four Level, which are specified in the Level field of the
Configuration menu. Clicking the down arrow at the right of the Level field displays the available level.
WEP Key Setting Page
“WEP Key Setting” page allows you to enhance the security of a network. Every station in a secured
network should enable the Encryption function and the values of the Network Key should be the same.
Select "Enable" from WEP and Clicking on the "Setting".
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This page as below will appear.
Key Length
You may select the 64-bit or 128-bit to encrypt transmitted data. Larger key length will provide higher
level of security, but the throughput will be lower.
Default Key ID
Select one of the keys (1~4) as the encryption key.
Key Format
‧Hexdecimal –Input digit Hex value to key value.
‧ ASCII –Input ASCII Character Codes to key value.
Key Value
The keys are used to encrypt data transmitted in the wireless network. Fill the text box by following the
rules below.
‧ 64-bit – Input 10 digit Hex values (in the “A-F”, “a-f” and “0-9”range) as the encryption keys. For
example: “0123456aef“.
‧ 128-bit – Input 26 digit Hex values (in the “A-F”, “a-f” and “0-9” range) as the encryption keys. For
example:“01234567890123456789abcdef“.
‧ 256-bit – Input 58 digit Hex values (in the “A-F”, “a-f” and “0-9” range) as the encryption keys.
example: “012345678901234567890123456789ab “.
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Authentication Mode
This setting has to be consistent with the wireless devices, which the adapter intends to connect.
‧ Open System – No authentication is needed among the wireless devices.
‧ Shared Key – Only wireless devices using a shared key (WEP Key identified) are allowed to
connecting each other. Setup the same key as the wireless devices, which the adapter intends to connect.
Fragmentation Threshold
The value defines the maximum size of packets, any packet size larger than the value will be fragmented.
If you have decreased this value and experience high packet error rates, you can increase it again, but it
will likely decrease overall network performance. Select a setting within a range of 256 to 2346 bytes.
Minor change is recommended.
RTS/CTS Threshold
Minimum packet size required for an RTS (Request To Send). For packets smaller than this threshold,
an RTS is not sent and the packet is transmitted directly to the WLAN. Select a setting within a range of
0 to 2347 bytes. Minor change is recommended.
Preamble
defines the length of CRC block in the frames during the wireless communication.
‧ Long –“Long ” can provide more reliable communication.
‧ Short –“Short ” is suitable for high traffic wireless network.
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MAC address Filter Page
If you select "Accept" from Filter Type, only those clients whose wireless MAC addresses are in the
"Filte MAC Address" list will be able to connect to Access Point. When this option is Disable, wireless
clients will be able to connect if the list contains entries. When this option is Reject, no wireless clients
whose wireless MAC addresses are in the "Filte MAC Address" list will be able to connect .
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WIRELESS BRIDGE MODE
Bridge Adapter Page
The utility provides the user an easy interface to provide the bridge mode.
Select the “Bridge Mode” by the “Bridge Adapter” down drop menu.
If the item is selected,The Status of ″Bridge Mode ″ will be ″Enabled″.
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TROUBLESHOOTING
If you encounter some problems while installing the G245 WLAN adapter or you want to confirm
whether your adapter is installed properly or not, we have listed the procedure for checking the various
components after you have installed the adapter. In first part of Troubleshooting, we have suggested the
users to check the various properties of the card to check the proper installation. In second section, we
have listed the various problems that you may encounter during the installation and have also listed the
possible solution. Check the first part to guess the probable reason of unsuccessful installation.
Please check the followings if you encounter some problem while installing the G245 or yours G245 are
non-functional.
In Windows 2000:
To check that the G245 is installed properly, please do the following:
1. Check the Windows 2000 Diagnostics. See if there is any conflict in the Resource allocation or the
I/O Address, IRQ allocations. If you find that the IRQ or I/O Addresses are already assigned to some
other devices, you must change that value.
2. Go to the Control Panel. Double click on the Network Adapter, you will see G245 Wireless Adapter.
Double clicking on that will show you the status of the G245 network adapter. If there are no error
signs, the adapter has been installed properly.
In Windows XP:
To check that the G245 is installed properly, please do the following:
1. Go to START->CONTROL PANEL. Double-click on Network Connections. Right-click on LAN.
Click Properties.
2. The G245 network adapter will appear, indicating proper installation.
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TECHNICAL SPECIFICATIONS
Networking Characteristics
Standard &
Compatibility
Host OS
USB 2.0
IEEE 802.11g Standard for WLAN (DSSS)
Internal Wi-Fi certified by TwinMOS
Windows 98SE/ME/2000/XP
Linux
Media Access Protocol CSMA/CA with ACK
Network Protocol
Network Type
Network Setting
TCP/IP
IPX
NetBEUI
Infrastructure
Ad-Hoc
Pseudo IBSS
Soft AP
Auto available network search
Auto Transmission Rate switch
Dynamic Distance Check between Station and Infrastructure
Dynamic Signal Strength Check
Dynamic Power Level Check
RF Characteristics
Frequency Range
Operating Channels
2.400-2.4835 GHz, Direct Sequence Spread Spectrum (DSSS)
1-11 United States (FCC)
1-11 Canada (DOC)
1-14 Japan (MKK)
1-13 Europe (Except Spain and France) (ETSI)
11 Mbps: CCK
Modulation Technique
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5.5 Mbps: CCK
2 Mbps: DQPSK
1 Mbps: DBPSK
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Spreading
11-chip Barker Sequence
Transmit Power
15 dBm @ Nominal Temp Range
Receive Sensitivity
Nominal Temp Range: 11 Mbps 10-5 BER @ -80 dBm, minimum
Security
64/128-bit WEP Encryption
Operating Range
Open Space: 100 ~ 400m; Indoor: 30m ~ 100m
The transmission speed varies in the surrounding environment.
EMC Certification
FCC part 15B, 15C; R&TTE
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FEDERAL COMMUNICATIONS COMMISSION
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:(1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the
user‘s authority to operate the equipment.
FCC CAUTION
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. This
equipment generates, uses and can radiated 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.
IMPORTANT NOTE:
FCC Radiation Exposure Statement:
This transmitter must not be co-located or operated in conjunction with any other antenna or transmitter.
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