11Mbps Wireless Pcmcia Card
Date: Aug. 24, 2001
Teletronics International Inc. 11M Wireless Pcmcia Card
Table of Contents
Chapter 1 About 11Mbps Wireless PC Card .............................................. 1
1-1 Features and Benefits ............................................................................ 1
1-2 Applications.......................................................................................... 2
1-3 Product Kit........................................................................................... 3
Chapter 2 Hardware Installation................................................................. 4
2-1 System Requirements............................................................................. 4
2-2 Hardware Installation for 11Mbps Wireless PC Card ........................... 4
Chapter 3 Software Installation................................ ................................... 5
3-1 Set up 11Mbps Wireless PC Card for Windows 95 / 98/ ME ................. 5
3-2 Setup 11Mbps Wireless PC Card for Windows NT 4.0.......................... 9
3-3 Setup 11Mbps Wireless PC Card for Windows 2000........................... 13
Chapter 4 Parameter Configuration............................................................. 16
4-1 Installation of “WLU” utility............................................................... 16
4-2 Using the WLA Utility ......................................................................... 17
Chapter 5 Troubleshooting ........................................................................ 28
Appendix A Network Configuration................................ .............................. 30
Appendix B Specifications............................................................................. 33
Appendix C Glossary..................................................................................... 34
Teletronics International Inc. 11M Wireless Pcmcia Card
Chapter 1 About 11Mbps Wireless PC Card
The 11Mbps IEEE 802.11b PC Card is a standard PCMCIA adapter that fits into any standard
PCMCIA Type II slot in a notebook computer. Its 11Mbps data rate gives equivalent Ethernet
speed to access corporate network or the Internet in a wireless environment. In addition, a
detachable antenna version is specifically designed for system integrator application. When installed,
11Mbps Wireless PC Card is able to communicate with any 802.11 and 802.11b compliant products.
1-1 Features and Benefits
1. Supports 1, 2, 5.5 and 11 Mbps data rate.
2. Working range up to 800 ft. in an open environment.
3. Seamless connectivity to wired Ethernet and PC network LAN’s augments existing networks
quickly and easily.
4. Direct Sequence Spread Spectrum (DSSS) technology provides robust, int erference-resistant
and secure wireless connection.
5. Wireless connection without the cost of cabling.
6. Supports a wide range of LAN NOS (Win95/98/ME, NT, Win2000, NetWare client, DOS,
Linux).
7. Support high security WEP encryption (40-bit and 128-bit).
8. Supports Plug and Play.
9. Easy installation.
10. Greater flexibility to locate or move networked PCs.
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1-2 Applications
11Mbps Wireless PC Card offers a fast, reliable, cost-effective solution for wireless client access to
the network in applications like these:
1. Remote access to corporate network information
E-mail, file transfer and terminal emulation.
2. Difficult-to-wire environments
Historical or old buildings, asbestos installations, and open area where wiring is difficult to
deploy .
3. Frequently changing environments
Retailers, manufacturers and those who frequently rearrange the workplace and change
location.
4. Temporary LANs for special projects or peak time
C1- Trade shows, exhibitions and construction sites where a temporary network will be
practical. C2- Retailers, airline and shipping companies need additional workstations during
peak period. C3- Auditors requiring workgroups at customer sites.
5. Access to database for mobile workers
Doctors, nurses, retailers, accessing their database while being mobile in the hospital, retail
store or office campus.
6. SOHO (Small Office and Home Office) users
SOHO users need easy and quick installation of a small computer network.
7. High security connection
The secure wireless network can be installed quickly and provide flexibility . (Please refer to
page 22 for encryption configuration.)
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Teletronics International Inc. 11M Wireless Pcmcia Card
1-3 Product Kit
11Mbps Wireless PC Card comes with the following items. Please go through each item below. If
any listed item is not included or found damaged, please contact your local dealer.
11Mbps Wireless PC Card
11Mbps Wireless LAN PC Card………………….…………………….….….. x 1
l
11Mbps PC Card Software and Documentation CD or Floppy Diskette…….... x 1
l
11Mbps Wireless LAN PC Card User Manual…………..…………………..… x 1
l
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Teletronics International Inc. 11M Wireless Pcmcia Card
Chapter 2 Hardware Installation
This chapter describes the instructions that guide you through the proper hardware installation of your
11Mbps Wireless PC Card.
2-1 System Requirements
In order to use the 11Mbps Wireless PC Card, your computer must be equipped with the following:
1. A PCMCIA Type II slot, and a PCMCIA card and socket services compliant with revision 2.10
of the PCMCIA specification (or higher).
2. Windows 95/98/ME/NT/2000 (with a Windows installation CD-ROM, diskettes for use during
installation)
3. Minimum 500 Kbytes free disk space for installing driver and utility program.
2-2 Hardware Installation for 11Mbps Wireless PC Card
To install the 11Mbps Wireless PC card , please do the following:
1. Find an available Type II or Type III PCMCIA slot in your notebook computer.
2. With the PCMCIA adapter’s 68 -pin connector facing the PCMCIA slot and its label facing up,
slide the PCMCIA adapter completely into the PCMCIA slot.
Fig Insert the 11Mbps PC Card into the notebook.
NOTE:
The PCMCIA slot allows “hot swap” of PCMCIA adapter. You may therefore insert
or remove your 11Mbps Wireless PC Card from the slot whenever you like even when
the power of your computer is on. However, you are advised to always disable the
PC card prior to removing the card from the PC card slot. This will allow the
Windows operating systems to log off from the network server. Disable the driver
properly and disconnect the power to the PC card slot.
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Teletronics International Inc. 11M Wireless Pcmcia Card
Chapter 3 Software Installation
This chapter describes the installation of the 11Mbps Wireless PC Card driver for the Windows
95/98/ME, Windows NT 3.51/4.0 and Windows 2000 operating systems. The installation
procedures for Windows 95/98/ME refer to
95/98/ME
NT 3.51/4.0;
2000.
; for Windows NT4.0 please see
for Windows 2000 please see
3-1 Set up 11Mbps Wireless PC Card for Windows 95 / 98/ ME
1. Insert the 11Mbps Wireless PC Card into a standard type II PCMCIA slot in your notebook.
2. Windows 95/98/ME will automatically detect the new hardware and prompt you to install the
driver needed.
3-1 Set up 11Mbps Wireless PC Card for Windows
3-2 Set up 11Mb ps Wireless PC Card for Windows
3-3 Set up 11Mbps Wireless PC Card for Windows
3. Select “
4.
Search for the best driver for your device
” and click
Next
.
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Teletronics International Inc. 11M Wireless Pcmcia Card
Select the location where the corresponding driver is placed (either from “
or “
Select a location
”), then click
Next
.
Floppy disk devices
5. Windows 95/98 /ME will find “IEEE 802.11 Wireless LAN PC Card”. Now click
Next
”
.
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Teletronics International Inc. 11M Wireless Pcmcia Card
6. Set parameters for the 11Mbps Wireless PC Card. Please refer to Chapter 4-2 for the definition
of each parameter.
AltRetry: This parameter defines the number of times a packet will be resent if the initial transmission is
unsuccessful. The maximum number of retry is 7.
Authentication Algorithm: The 11Mbps Wireless PC Card provides two types of authentication
services:
WECA Compliant (always use)
WECA Compliant (always use)
.
and
Must be Shared with WEP
. T he default value is
Preamble Mode: The Wireless LAN PCMCIA Card supports three preamble modes: Long Tx
Preamble, Short Tx Preamble, and Aut o. Long Tx headers ensure compatibility with older models of
client adapters. Short Tx headers improve throughput performance. The default value is Long Tx
Preamble.
For other parameters ’ definition and further configuration please go to Chapter 4-2 Using the WLA
Utility on page 18.
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7. Click
to complete the software installation.
Finish
8. Restart the computer.
9. Open Control Panel/System/Device Manager, and check Network Adapters to see if any error
icon appears. If no, your 11Mbps Wireless PC Card is working well.
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3-2 Setup 11Mbps Wireless PC Card for Windows NT 4.0
1. Login as Administrator.
2. From the desktop, select
then click the
Add
button.
Control Panel
, double -click
Network
, go to the
Adapters
tab, and
3. Windows NT will present a list of all its supported adapters. Select
to continue.
Disk
OTHERS
, or click
Have
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Teletronics International Inc. 11M Wireless Pcmcia Card
4. Windows NT will ask for the drive/path containing the 11Mbps Wireless PC Card Windows NT
drivers. Insert the 11Mbsp PC Card Driver and Utility CD-ROM or diskette into the
corresponding drive, and then type the location where it is placed.
5. Windows NT will attempt to locate an INF file in the specified path. If you have entered the
path name correctly, Windows NT should copy the appropriate drivers to the Windows NT
system.
6. A 11Mbps Wireless PC Card setup dialog box will show up. Please select the “
Channel
”? ”
Network Type
Your 11Mbps Wireless PC Card will thereafter work on this configuration under Windows NT.
Press OK to continue.
Fig. Choose device model.
” and “
” manually according to the setting in the following fig .
SSID
Default
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7. Now, the drivers have been properly copied . Go to
to the
Adapters
tab, and then click the
Properties
Control Panel
button. Please specify each parameter
, double-click
required the network to work on, such as IP Address, Subnet Mask, and Default Gateway.
Network
, go
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Teletronics International Inc. 11M Wireless Pcmcia Card
8. Restart the system.
9. To ensure whether the 11Mbps Wireless PC Card works fine or not, go to
double-click
Devices
, then verify whether the 11Mbps PC Card driver has started.
Control Panel,
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Teletronics International Inc. 11M Wireless Pcmcia Card
3-3 Setup 11Mbps Wireless PC Card for Windows 2000
1. Insert the 11Mbps Wireless PC Card into a standard type II PCMCIA slot in your notebook.
2. Windows 2000 will automatically detect the new hardware and prompt you to install the driver
needed.
3. Select “
5.
Search for a suitable driver for my device [recommended]
” and click
Next
.
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Select the location where the corresponding driver is placed, then click
Next
.
5. Windows 2000 will find “IEEE 802.11 Wireless LAN PC Card”. Now click
Next
.
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Teletronics International Inc. 11M Wireless Pcmcia Card
7. Click
to complete the software installation.
Finish
8. Open Control Panel/System/Device Manager, and check Network Ad apters to see if any error
icon appears. If no, your 11Mbps Wireless PC Card is working well.
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Teletronics International Inc. 11M Wireless Pcmcia Card
Chapter 4 Parameter Configuration
This chapter gives you assistance with detailed installation procedures of the WLU utility for setting the
11Mbps Wireless PC Card.
4-1 Installation of “WLU” utility
Insert the 11Mbps Wireless PC Card Software and Documentation CD or floppy diskette into the
1.
corresponding drive, and execute the
guiding you through the pro cess of installation.
WLU \setup.exe.
Then Follow the on-screen instructions
2. Click
to configure your 11Mbps Wireless LAN PC Card.
to complete the installation. Proceed to the next section –
Finish
Using the WLA Utility
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4-2 Using the WLA Utility
The 11Mbps Wireless LAN PC Card is a ready-to-use device. Its default settings can set for the
typical
Infrastructure Wireless LAN
. Simply install the PC Card onto your computer and it is
ready to use. In special situations however, you may change to adjust configuration settings
depending on how you would like to manage your wireless network. The WLA utility enables you to
make configuration changes and perform user -level diagnostics on your 11Mbps Wireless PC Card in
the Windows 95/98/ME/NT/2000 operating system environments. When you minimize the window,
a sys tem tray icon will be loaded in the toolbar. Clicking on the icon will open the configuration
window again.
1. Click
Start
, point to
Programs
and run
WLA Utility
.
2. Main Menu appears.
A: Main Menu
When Main Menu shows up, the 11Mbps Wireless PC Card hardware information will display on
the top of the screen in real time. You will see current adapter configuration information in terms
of the MAC address, firmware version, frequency domain, BSS joined, current channel and ESS
ID of the adapter that you installed in your desktop or notebook computers.
At the bottom of the Main Menu screen, it shows all main functions of the WLA utility:
¨ [Network Configuration]
installed 11Mbps Wireless PC Card for your wireless network environment.
¨ [Diagnostic Tools]
you assess the wireless network environment and performance of the RF links .
¨ [Firmware Upgrade ]
– The
– Allows you to change the configuration parameters of your currently
Site Survey, Link Quality Test
and
Access Points Browser
– Allows you to upgrade firmware of the Wireless PC Card.
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help
Teletronics International Inc. 11M Wireless Pcmcia Card
B. Network Configuration
The Network Configuration menu provides allows you to view and modify current configuration of
the 11Mbps Wireless PC Card more easily and simply. The configuration settings include :
Network Type, RTS Threshold, Frag. Threshold, Transmission Rate,
and
Use WEP
SSID
.
,
B-1 SSID
The SSID is a unique ID given to the Access Point. Wireless clients associating to any Access
Point must have the same SSID. Select
Specify SSID as
Point) you desire to connect with. Alternatively, you may select
and enter a specific SSID (Access
Use Non-Specified SSID
(default setting). This allows your wireless adapter to automatically associate to any Access
Point in the vicinity of your wireless adapters. You can leave Use Non-Specified ESSIS filed
blank, or enter the name “
Specify SSID
option. This will prevent your computer from unintentionally connecting to a
” (all characters in upper -case). It is recommended you select the
ANY
different wireless network. If there are more than two Access Points using the same SSID, you
may specify the one you want to connect with by entering its MAC address in the
BSSID
field. By clicking the “
Browse
” button you may select the MAC address of the Access
Preferred
Point you desire to connect to.
When moving your computer to another location within the network environment, and it is out of
range of the current Access Point, the roaming functionality will automatically connect your
computer to the newest Access Point. This is so called “Roaming” functionality. For further
description, see the following page and the Appendix A on page 30.
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B-2 Network Type
To connect your wireless station to a local network infrastructure as described in Appendix A
“ Network Configuration” on page 30, set the station operation mode to
Infrastructure
(with
Access Point, default setting). In case you do not wish to connect to a network infrastructure,
but prefer to setup a small wireless workgroup also described on page 30, you can enable the
Ad-Hoc
(without Access Point) or
802.11 Ad-Hoc
the same channel. . Be aware that when the
tick box and set your wireless stations with
802.11 Ad-Hoc
mode is selected, be sure to set
your wireless stations with the same SSID.
NOTE:
The 11Mbps Wireless PC Card works with any IEEE802.11 and 802.11b compliant
Access Points.
B-3. Transmission Rate
The 11Mbps Wireless PC Card provides various data rate options for you to select. Data rates
options include
and
Fixed 11Mb/s
” will prove the most efficient. This setting will allow your 11Mbps Wireless LAN PC Card to
Auto
Fully Auto, Fixed 1Mb/s, Fixed 2Mb/s, Auto Select 1M or 2M, Fixed 5.5Mb/s
. In most networking scenarios, you will see that the factory-set default “
Fully
operate at the maximum data rate. When the communications quality drop s below a certain level, the
PC Card will automatically switch to a lower data rate. Transmissions at lower data speeds are
usually more reliable. However, when the communications quality improves again, the 11Mbps
Wireless LAN PC Card will gradually increase the data rate again, until it has reached the highest
available transmit rate.
,
If you wish to balance speed versus reliability, you can also select any of the above options.
11Mb/s
or
Fixed 5.5Mb/s
devices can communicate at the highest data rate.
are used often in networking environments where the range of the wireless connection is more
2M
is used in a networking environment where you are certain that all wireless
Fixed 1Mb/s, Fixed 2Mb/s, Auto Select 1M or
Fixed
important than speed.
B-4. RTS Threshold
RTS Threshold is a mechanism implemented to prevent the “Hidden Node” problem. “Hidden
Node” is a situation in which two stations are within range of the same Access Point, but are not within
range of each other. The following figure illustrates an example of the “Hidden Node” problem.
Both stations (STA) are within range of the Access Point, however, they cannot hear each other.
Therefore, they are hidden nodes for each other. When a station starts data transmission with the
Access Point, it might not notice that the other station is already using the wireless medium. When
these two stations send data at the same time, they might collide when arriving simultaneously at the
Access Point. The collision will most certainly result in a loss of messages for both stations.
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Thus, the RTS Threshold mechanism provide s a solution to prevent data collisions. When you enable
RTS Threshold on a suspect “hidden station”, this station and its Access Point will use a Request to
Send/Clear to Send protocol (RTS/CTS). The station will send an RTS to the Access Point,
informing that it is going to transmit the data. Upon receipt, the Access Point will respond with a CTS
message to all station within its range to notify all other stations to defer transmission. It will also
confirm the requestor station that the Access Point has reserved it for the time-frame of the requested
transmission.
If the “Hidden Node” problem is an issue, please specify the packet size. The RTS mechanis m will
be activated if the packet size exceeds the value you set. It is highly recommended that you set the
value ranging from 0 to 1500.
NOTE:
Enabling RTS Threshold would cause redundant network overhead that could negatively
affect the throughput performance instead of providing a remedy.
B-5. Frag Threshold
Fragmentation mechanism is used for improving the efficiency when high traffic flows along in the
wireless network. If your 11Mbps Wireless LAN PC Card often transmit large files in wireless
netw ork, you can enable the Fragmentation Threshold by clicking the
Enable
button and the
mechanism will split the packet. The value can be set from 256 to 2346. The default value is
Disable.
B-6. IRQ NO./IO Address
To avoid device conflict, you may modify the IRQ No. and IO Address for your device (Only available
under Windows NT).
B-7. Power Save
The Power Save option is designed to conserve battery life of you computer. When Power Save is
enabled, your 11Mbps Wireless LAN PC Card will go into sleep mode to minimize power
consumption.
NOTE:
When power saving mode is enabled, the Access Points you use need to support power
saving as well so that the communication can be established.
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B-6. Use WEP (Wired Equivalent Privacy)
To prevent unauthorized wireless stations from accessing data transmitted over the network, the
11Mbps Wireless LAN PC Card offers highly secure data encryption, known as WEP. If you
require high security in transmission, please select the
Enable
item and click the
Key List
button.
The Wireless LAN PC Card supports two types of Encryption Key length:
40-Bits
and
128-Bits
You may need to enter 4 different encryption keys and select one of them to encrypt your transmission
data. The key value of your choice may either be:
For 40 -Bits encryption:
Five alphanumeric characters in the range of “a-z”, “A-Z ” and “0-9” (e.g. MyKey), or:
n
10 digit hexadecimal values in the range of “A-F” and “0-9”, preceded by the characters “0x”
n
values (e.g. 0x11AA22BB33).
For 128-Bits encryption:
13 alphanumeric characters in the range of “a-z”, “A-Z” and “0-9” (e.g. WEPencryption).
n
26 digit hexadecimal values in the range of “A-F” and “0-9”, preceded by the characters “0x”
n
values (e.g. 0x11AA22BB33123456789ABCDEFF)
NOTE:
To allow encrypted data communications, you must set the same encryption key values on all
wireless stations and/or Access Points. For example, if you use Key 1 on your PC card,
and the value is (e.g. MyCar), the same value must be assigned to Key 1 for all other client
stations. The values yo u enter on the encryption tab, will only be visible the first time you
enter the keys. After closing this tab, all key values will be displayed as “
xxxxxxxxxxx
every time the tab is displayed again.
.
”
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C. Diagnostics Tools Screen
The Diagnostics Tools hel ps you diagnose the wireless LAN environment. The following explains
each tool and details instructions of how to perform diagnostics tools.
Fig. Diagnostic Tools
¨
[Site Survey]
¨ [Link Quality Test]
¨
[Access Point Browser]
- Check wireless channel quality for your wireless network environments.
- Test point-to-point communication quality.
- Display all active Access Points at your site.
The instructions of performing each diagnostic tool are as follows:
C-1. Site Survey
When the Site Survey screen is displa yed, the channel quality of all 14 radio channels will be
displayed. These channel quality measurements are shown on each gauge for the 14 radio
channels. The
the blue bar is, the
higher
better
quality you have (i.e., less interference).
The channel quality is scanned channel-by-channel repeatedly. You may see some of the
gauges changing their height occasionally. To determine the channel quality in a longer time span,
you can refer to the average channel quality measurement from the small-shaped dot in each
channel quality gauge.
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Fig. Site Survey
C-2. Link Quality Test
Link Quality Test is a useful diagnostic tool for you to test point-to-point data transmission quality
between two wireless LAN stations. Or, if you use the Infrastructure wireless LAN configuration,
you can test the transmission quality between your wireless LAN station and Access Point.
When Link Quality Test Screen is displayed, you may choose one of the roles that this wireless
LAN station should perform.
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1. Act as Master test station (Ad-Hoc):
Input the MAC address of the destination slave test station before press ing the
button. The
Start
slave MAC address can be found from the slave test station’s screen. The “Master Test Station”
window will be displayed after pressing
Start
.
Fig. Act as Master test station
The “Master Test Station” window contains the following status/ statistical information during the
Link Quality Test session:
¨ Slave / Test Address:
The physical address of the destination slave test station. (The physical
address of your own wireless station will be displayed while performing Access Point loopback
test.)
¨ Packet Sent:
¨ Packet Received:
¨ Elapsed Time:
¨ Signal level:
Total test packets that have been sent.
Total responding packets that have been received.
Total test time.
The signal level when receiving last responding packet. The signal level is
calculated as the percentage of its signal level measurement relative to the full signal level.
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Start
.
2. Act as Slave test station (Ad-Hoc):
You can press the
button to start the slave test station. The “Slave Test Station” window
Start
will be displayed after pressing
The “Slave Test Station” window contains following status/statistical information during the Link
Quality Test session:
Fig. Act as Slave test station
¨ My Address:
¨ Packet Received:
¨ Elapsed Time :
¨ Signal Level:
The slave test station’s physical address.
Total test packets that have received.
Total test time.
The signal level when receiving last test packet. The signal level is calculated as
the percentage of its signal level measurement relative to the full signal level.
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3. Loopback through Access Point (Infrastructure):
If you use the infrastructure wireless LAN configuration, you may select the Access Point loopback
test to verify the communication quality between your wireless station and Access Point . To run
the loopback test, select the
Loopback through the access point
item and click
Start
that it only works in the infrastructure mode.
. Note
Fig. Loopback through Access Point
¨
Packet Sent:
¨ Packet Received:
¨
Elapsed Time:
¨ Signal level:
Total test packets sent.
Total responding packets received.
Total test time.
The signal level when receiving last responding packet. The signal level is
calculated as the percentage of its signal level measurement relative to the full signal level.
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C-3. Access Point Browser
Select the
Access Point Browser
and you will see a screen shown as below. Choose Go,
and all the active Access Points will be displayed on the screen.
Fig. Access Point Browser.
Each row of the Access Point information contains the following columns:
¨
BSS_ID:
¨ ESS_ID:
¨
Channel
¨ Beacon:
The BSS ID (MAC address) of the Access Point.
The ESS ID of the Access Point.
: The operating channel number of the respective access point.
Each Access Point broadcasts “beacon” periodically. The wireless station will process
these beacons to keep in touch with the network. It counts the beacons cumulatively from the
beginning of the Access Point Browser session. This item only shows in the Single -Channel
browser screen.
¨ Supported Rates
: The data rates that the PC card will support. For the 11Mbps product the
supported rates are 11M, 5.5M, 2M, and 1M.
¨ Capacity
: This is information from the beacon of the Access Point. When communicating with
any Access Point, it will display “ESS”. This means that the Access Point is capable of
infrastructure mode. When the device is in Ad-Hoc mode, you will not see any information in this
column.
¨ Signal Level
: This signal level is in the range from 27 to 154. A high number means that you
have a strong signal. This information is for engineering purposes. Please use the diagnostic
tool to determine your signal strength. Refer to page 24 for information.
¨
Noise Level
: This measurement is the actual amount of noise within your area. This information is
for engineering purposes. Please use the diagnostic tool and make sure you are above 70
percent. There may be situations where you are close to your access point, but your signal is
below 70 percent. This may indicate high noise. Refer to page 24 for information.
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Chapter 5 Troubleshooting
1. Problem Solving
l 11Mbps Wireless PC Card cannot work properly
Solutions:
a. Installation:
Insert the PCMCIA adapter into Notebook’s slot again. The Power and Link
n
LED should be on if the adapter is properly inserted.
Make sure the antenna is installed on the 11Mbps Wireless PC Card correctly.
n
Check if the I/O and IRQ for the 11Mbps Wireless PC Card has conflic t problem
n
with other devices.
For Windows 95/98/ME/NT/2000 system, make sure a PCMCIA card service
n
driver is installed on your computer. See Chapter 2 Hardware Installation for
11Mbps Wireless PC Card on page 4.
b. Configuration Mismatch
Use the utility “Loopback Test” to check the link status with the AP associated with
n
(Infrastructure Mode).
Use the utility “Master -- Slave Test” to check the link status between the cards
n
(Ad-Hoc Mode).
Use the utility “Site Survey” to check whether there is high interference around the
n
environment.
Ensure you set the correct IP address for the 11Mbps Wireless PC Card. Use the
n
Ping command to ping the unit itself.
If Netbeui is installed and relevant parameters are set properly, you can go to
n
Neighborhood to check if you can see your PC.
a. Check the Settings for the Access Point.
Make sure the Access Point is powered on and all the LEDs are working normally.
n
Use the Ping command to ping any other host. If the host does not respond, your
n
Access Point might not be connected to the network.
Re-configure and reset the Access Point.
n
Use Web Management/Telnet of the Access Point to check whether all the Access
n
Points are connected to the network.
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l The 11Mbps Wireless PC Card station cannot communicate with the computer on
the Ethernet when the Infrastructure mode is configured.
Probable Causes & Solution:
a. Make sure the Access Point with which the station associated is powered on.
b. Start Site Survey Utility to verify the operating radio channel is in good quality. Or,
change the Access Point and all the stations within the BSS to another radio channel.
c. Make sure the station is configured with the same security option with the Access Point,
either turn off or turn on with the same security key.
d. Make sure the BSS ID is the same as the Access Point for a roaming disabled station,
or the ESS ID is the same as the Access Point for a roaming enabled station.
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Appendix A Network Configuration
The 11Mbps Wireless LAN products support the same network configuration options of the legacy
Ethernet LANs as defined by IEEE 802 standard committee.
The 11Mbps Wireless LAN pr oducts can be configured as:
Ad-Hoc for departmental or SOHO LANs
u
Infrastructure for enterprise LANs
u
LAN-Interconnection for point-to-point link as a campus backbone.
u
A-1 Network Topology
u Ad-Hoc
An Ad-Hoc wireless LAN is a group of computers, each equipped with one wireless adapter,
connected as an independent wireless LAN. Computers in a specific Ad-Hoc wireless LAN must be
configured at the same radio channel.
Ad-Hoc wireless LAN is applicable at a departmental scale for a branch or SOHO operation.
Fig An Example of Ad -Hoc Wireless LAN
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Teletronics International Inc. 11M Wireless Pcmcia Card
u Infrastructure
Fig An Example of Infrastructure Wireless LAN
The 11Mbps Wireless LAN devices provide access to a wired LAN for wireless workstations. An
integrated wireless and wired LAN is called an Infrastructure configuration. A group of wireless LAN
PC users and an Access Point construct a Basic Service Set (BSS). Each wireless-equipped PC in
this BSS can talk to any computer in the wired LAN infrastructure via the Access Point.
Infra structure configuration will extend the accessibility of a wireless station to the wired LAN.
Multiple Access Points will allow roaming and it will increase the transmission range. The Access
Point is also able to forward data within its BSS. The effective transmission range in an infrastructure
LAN is
doubled
.
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Teletronics International Inc. 11M Wireless Pcmcia Card
Fig The effective Transmission Range
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Teletronics International Inc. 11M Wireless Pcmcia Card
Appendix B Specifications
Product
Operating Channels
Operating Frequency
Range
RF Technology Direct Sequence Spread Spectrum
Modulation CCK(11Mps, 5.5Mbps) , DQPSK(2Mbps) , DBPSK(1Mbps)
11 for N. America, 14 Japan, 13 Europe (ETSI), 2 Spain,
4 France
2.412-2.462 GHz ( N. America)
2.412-2.484 GHz (Japan)
2.412-2.472 GHz (Europe ETSI)
2.457-2.462 GHz (Spain)
2.457-2.472 GHz (France)
11M: 460 feet = 140m (In open environment)
5.5M: 656 feet = 200m
2M: 885 feet = 270m
1M: 1311 feet = 400m
11Mbps Wireless PC Card
Voltage 3.3V & 5V DC
Power Consumption
Output Power 13 dBm
Sensitivity
Data Rate 1,2,5.5,11 Mbps
Media Access Protocol CSMA/CA, 802.11 Compliant
Support OS Windows 95/98/ME//NT4.0/2000, Linux, FreeBSD
Tx power consumption: < 350mA
Rx power consumption: < 250mA
@PER < 0.08
11Mbps < -83 dBm
5.5Mbps < -86dBm
2Mbps < -89dBm
1Mbps < -91dBm
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Appendix C Glossary
Access Point
together.
Ad-Hoc
as an independent wireless LAN.
Backbone
information from one central location to another central location where it is unloaded onto a local
system.
Base Station -
that maintains communication with the mobile radio telephone sets within its range. In cellular and
personal communications applications, each cell or micro cell has its own base station; each base
station in turn is interconnected with other ce lls’ base stations.
- Stands for “Basic Service Set.” An Access Point associated with several wireless stations.
BSS
- Stands for “Extended Service Set.” More than one BSS can be configured to be an
ESS
Extended Service Set. An ESS is basically a roaming domain.
Ethernet
that accepts transmission from computers and terminals. Ethernet operates on 10 Mbps base band,
transmitting over shielded coaxial cable or over shielded twisted pair telephone wire.
- An internetworking device that seamlessly connects wired and wireless networks
- An Ad -Hoc wireless LAN is a group of computers each with wireless adapters, connected
- The core infrastructure of a network. The portion of the network that transports
In mobile telecommunication, a base station is the central radio transmitter/ receiver
- A popular local area data communications network, originally developed by Xerox Corp .,
Infrastructure
PCMCIA
develops standards for PC cards, formerly known as PCMCIA cards. They are available in three
types that are about the same length and width as credit cards but range in thickness from 3.3 mm
(Type I) to 5.0 mm (Type II) to 10.5 mm (Type III). These cards provide many functions, including
memory storage, and acting as landline modems and as wireless LAN.
Roaming
station, for example) throughout a domain (an ESS, for example) while being continuously connected to
the infrastructure.
RTS Threshold
mechanism can solve this “ Hidden Node Problem”. If the packet size is smaller than the preset RTS
Threshold size, the RTS/CTS mechanism will NOT be enabled.
- An integrated wireless and wired LAN is called an Infrastructure configuration.
- PCMCIA stands for Personal Computer Memory Card International Association, which
- A function that enables one to travel with his mobile end system (wireless LAN mobile
- Transmitters contending for the medium may not hear each other. RTS/CTS
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