The following window shows the content of Advanced tab:
You can configure these advanced settings as described below.
802.11 Power Management
property controls whether 802.11 power management is used. If power management is set
This
on, the Compaq 802.11b WLAN Mini PCI card operates in a power saving mode.
•
Disabled:
•
Enable: Enable 802.11 power management.
Disable 802.11 power management. Default setting.
Fragmentation Threshold
This attribute specifies the current maximum size, in octets, of data that may be delivered to the wireless
network at once. A frame is broken into fragments if its size exceeds the value of this attribute. Lower
fragmentation thresholds can increase throughput in areas where high interference is encountered. Higher
fragmentation thresholds can increase data throughput if there is little interference. The default value of this
attribute is 2346. The minimum value is 256.
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Preamble Type
The preamble type property controls the length of the preamble. The type of preamble allows
the user to trade off compatibility with pre-802.11b wireless LAN cards for some transmit
throughput increase on 802.11b wireless LANs. Set preamble type:
•
Short: Only compatible with 802.11b wireless LAN networks. Allows faster
transmittal of data on 802.11b wireless LAN networks.
•
Long: Compatible with 802.11b and pre-802.11b wireless LAN networks.
•
Auto: Automatically choose short or long preamble type. Default setting.
Radio
Set this attribute to control your radio emissions. Some situations may require you to turn off
your Compaq 802.11b WLAN Mini PCI radio. Flying on an airplane is one example where the
radio is required to be turned off.
•
•
Card can transmit and receive signals. Default setting
On:
Card cannot transmit and receive signals.
Off:
.
Rate
Sets transmit rate of the Compaq 802.11b WLAN Mini PCI card. Setting a fixed rate will force
the card to connect at only that speed to other 802.11b and pre-802.11b clients or access points.
Setting the speed to Auto allows the card to automatically select the optimum transmit rate based
on the capabilities of the other clients and access points
•
Fixed 1 Mbps:
•
Fixed 2 Mbps: Set transmit rate to 2 Mbps.
•
Fixed 5.5 Mbps:
•
Fixed 11 Mbps:
•
Set transmit rate to auto adjustment. Default setting.
Auto:
Set transmit rate to 1 Mbps.
Set transmit rate to 5.5 Mbps.
Set transmit rate to 11 Mbps.
.
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Region
Configures the Compaq 802.11b WLAN Mini PCI card for compliance in the listed regions.
The region setting must match the region you are in for your card to interoperate with local
equipment and to comply with local laws and regulations.
•
Canada
•
Europe (except France)
•
France
•
Japan
•
Japan (MKK1): also known as TELEC.
•
USA
RTS Threshold
Setting this attribute turns on RTS/CTS handshake for frames of Data or Management type
transmitted by the Compaq 802.11b WLAN Mini PCI card. When a data packet to transmit is
greater than or equal to the RTS Threshold, the card will use a RTS/CTS handshake before
sending the data packet. The default value of this attribute is 2347.
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3-5 Statistics Properties
You can obtain more information from the Statistics tab in the window shown below.
It includes the following information.
Firmware version
Displays the current firmware version of the Compaq 802.11b WLAN Mini PCI card.
Driver version
Displays the current driver version for the Compaq 802.11b WLAN Mini PCI card.
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MAC address
Display the MAC address of your Compaq 802.11b WLAN Mini PCI card.
Associated BSSID
Displays the MAC address of the access point that your card is currently associated.
Link Quality
Indicates the condition of the current wireless link. The higher the quality, the better the
throughput.
Signal Strength
Indicates the signal strength with respect to the current connected access point. In general, you
will get stronger signal strength when you are closer to the associated access point.
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Appendix A Specifications for the Compaq 802.11b
WLAN Mini PCI Card
Physical Specifications
Dimensions(L × W × H)59.6mm × 50.8mm × 4.8mm
Weight14.2 gram
Temperature and Humidity (non condensing)
Operation10 to 49 °CMaximum humidity 90%
Transit (shipping)-30 to 70 °CHumidity 5 to 90%
Storage-20 to 60 °CHumidity 5 to 90%
Power Characteristics
Standby mode68 mA
Receive mode270 mA (Nominal)
Transmit mode550 mA (Nominal)
Power supply3.3 V
Networking Characteristics
Compatibility
Host operating system• Microsoft Windows XP Tablet
Media Access ProtocolCSMA/CA (Collision Avoidance) with
•
IEEE 802.11 Standard for
Wireless LANs (DSSS)
• Wi-Fi (Wireless Fidelity)
certified by the Wireless Ethernet
Compatibility Alliance (WECA)
• Mini PCI specification
Edition
Acknowledgement (ACK)
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Regulatory Information
Wireless communication is often subject to local radio regulations. Although wireless
networking products have been designed for operation in the license-free 2.4 GHz band, local
radio regulations may impose a number of limitations to the use of wireless communication
equipment.
Radio Characteristics
R-F frequency band2.4 GHz (2412-2472 MHz)
Sub-channels12412
Bit Error Rate (BER)Better than 8%
Nominal output power16 dBm
Encryption128-bit (RC4), also supports 64-bit
RC4/WEP (Wired Equivalent Privacy)
ETSI approved
countries and
Japan only
The range of the wireless signal is related to the Transmit Rate of the wireless communication.
Communications at lower Transmit Rates will travel larger distances.
•The range of your wireless devices can be affected when the antennas are placed near
metal surfaces and solid high-density materials.
•Range is also impacted due to “obstacles” in the signal path of the radio that may either
absorb or reflect the radio signal.
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Appendix B Troubleshooting
Using the World Wide Web
Support services are available on the Internet through the Compaq support forum. You can either
browse the postings as a guest, or register as a user and submit your own questions. Compaq
responds to questions within one business day. To access the Compaq support forum, go to the
Compaq Web site at http://www.compaq.com.
Preparing to Call Technical Support
If you cannot solve a problem using the troubleshooting tips in this section, you may need to call
technical support. To receive the fastest possible solution when you call, run the tablet PC
diagnostics utility. Refer to your computer documentation for information on running diagnostics.
Refer to the Worldwide Telephone Numbers booklet included with the tablet PC for information
about contacting a Compaq authorized dealer, reseller, or service provider. Have the following
information available before calling Compaq:
• Applicable error messages
• Add-on options
• Operating system
• Third-party hardware or software
• Detailed questions
• Technical Support Registration number, if you have previously called Compaq Technical
Support for assistance with your product (this number is assigned to you the first time you
call Technical Support).
Problem Solving
1. My computer does not recognize the wireless network card.
Solutions:
• Ensure that the wireless network card has been inserted into the Mini PCI slot.
• Ensure the antennas are connected.
2. The wireless network card does not work properly.
Solutions:
•Right-click My Computer and then choose Properties from the menu. Click
Hardware and then the Device Manager tab from the System Properties window and
click Network Adapter from the list. “Compaq 802.11b WLAN Mini PCI” will be
listed if it is installed successfully. If you see a Yellow Question Mark in front of the
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18
wireless network card, then the wireless card is not properly installed. Perform the
following steps:
Check and make sure that you have inserted the right card and have installed the
proper driver.
Remove the driver and install it again. Then reboot your computer.
• Confirm that the workstation and the wireless network are configured with the same
SSID.
3. I cannot connect to one of the users in the network.
Solutions:
• Make sure each network client is up and running.
• Make sure your Network Name (SSID) settings are correct.
• Make sure your WEP settings are correct.
• Move your computer closer to the base station or other network client.
• Make sure the network client you need to reach is within range, or within range of an
access point.
• Make sure the network settings are correct for your local area network.
• On a tablet PC, the Compaq 802.11b Mini PCI radio may not be enabled. Go to Device
Manager in Control Panel and open the Compaq 802.11b Mini PCI properties page.
Click on the Advanced tab. Verify that the Radio property is set to On.
• Make sure the Wireless LAN Status Light on the tablet PC is solid green.
Contact your network administrator for other networking issues.
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19
Appendix C Glossary
Access Point - An internetworking device that seamlessly connects wired and wireless networks
together.
Ad Hoc - A peer- to-peer wireless network without Access Point. A group of wireless clients
consistent an independent wireless LAN.
backbone - The core infrastructure of a network, the portion of the network that transports
information from one central location to another central location. The information is then off-
loaded onto a local system.
BSS - Basic Service Set. An Access Point associated with several wireless stations.
ESS - Extended Service Set. More than one BSS can be configured as an Extended Service Set. An
ESS is basically a roaming domain.
ESSID –Extended Service Set Identifier. The length of the ESSID information is between 0 and 32
octets. A 0 length identifier indicates the broadcast SSID.
Ethernet - A popular local area data communications network, originally developed by Xerox
Corp., which accepts transmission from computers and terminals. Ethernet operates on 10/100
Mbps transmission rate over shielded coaxial cable or over shielded twisted pair telephone wire.
infrastructure - An integrated wireless and wired LAN is called an infrastructure configuration.
Roaming - A function that allows one to travel with a mobile end system (wireless LAN mobile
station, for example) through the territory of a domain (an ESS, for example) while continuously
connecting to the infrastructure.
SSID – Same as ESSID.
WEP –Wired Equivalent Privacy. The optional cryptographic confidentiality algorithm specified
by IEEE 802.11 used to provide data confidentiality that is subjectively equivalent to the
confidentiality of a wired local area network (LAN) medium that does not employ cryptographic
techniques to enhance privacy.
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Warning
· This equipment must be installed and operated in accordance with provided
instructions and a minimum 20 cm spacing must be provided between computer
mounted antenna and person’’s body (excluding extremities of hands, wrist and
feet) during wireless modes of operation.
· Optional vehicle mounted antenna must not exceed 5.11 dBi antenna gain and
should be professionally installed.
· 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.
CAUTION
Any changes or modifications not expressly approved by the party responsible for
compliance could void the authority to operate equipment.
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