User manual AIRLIVE WN-300PCI

[. . . ] 802. 11b/g/n 2T2R 300Mbps PCI Card WN-300PCI User's Manual Copyright & Disclaimer No part of this publication may be reproduced in any form or by any means, whether electronic, mechanical, photocopying, or recording without the written consent of OvisLink Corp. OvisLink Corp. has made the best effort to ensure the accuracy of the information in this user's guide. However, we are not liable for the inaccuracies or errors in this guide. All information is subject to change without notice All Trademarks are properties of their respective holders. FCC Statement Federal Communication Commission Interference 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. [. . . ] You'll be prompted to input detailed information of access point, as described in Section 2-2-1-3. 32 2-3-2 Edit an existing profile If you have added a profile before, and you wish to change the content of the profile, you can use this function. Please select a profile from the list first, then click `Edit' button. You'll be provided with the contents of selected profile, and you can edit them. Click `OK' to save changes, or click `Cancel' to discard changes. 33 2-3-3 Delete an existing profile If you no longer need a profile, you can delete it. Select the profile you wish to delete from the list, and click `Delete' button to delete it. 34 2-3-4 Activate a profile When you want to connect to a specific wireless device in the profile list, you can select it and click `Activate' button, to establish connection with it. When you selected a profile and click `Activate' button to activate the profile, a icon will be displayed in front of the profile to show that the connection is failed; When the connection is successfully established, a icon will be displayed. 35 2. 4 Advanced Settings This wireless network card provides several advanced settings for experienced wireless users. You can change these settings to increase data transfer performance, or change operation mode. Please follow the following instructions to set advanced wireless settings: 1. Right-click the Airlive configuration utility icon located at lower-right corner of computer desktop and then click `Launch Config Utility'. 2. Click `Advanced' menu, and the following settings will appear: 36 Here are descriptions of every setup item: Item Name Wireless mode Enable Tx Burst Description Display the wireless operation mode of the network card. Check this box to accelerate the data transmit rate. Enable TCP Check this box and the configuration utility will adjust TCP window size automatically to get better performance. It should be safe for Window Size most of wireless environments, but if you found some problem on data transfer, uncheck this box. Fast Roaming Check this box and you can control the threshold that the wireless network card should switch to another wireless access point with better signal quality. Only adjust value when you understand what it means and you need to roam between multiple access points. Show When your computer is being authenticated by wireless authentication server, a dialog window with the process of Authentication authentication will appear. This function is helpful to find out the Status Dialog problem when you can not be authenticated, and you can provide this information to authentication server's administrator for debugging purpose. CCX is a wireless feature developed by Cisco used to improve the wireless performance with CCX compatible wireless devices. Check this box if you need to connect to CCX-compatible wireless devices. When you enabled CCX, the following setup items will become available: Turn on CCKM: Check this box to enable CCKM (Cisco Centralized Key Management), which enables wireless clients to roam between CCKM-enabled access points in very short time. Enable Radio Measurements: When you're connecting to CCX-compatible access point, check this box to enable radio measurement function to improve wireless connectivity. Non-Serving Channel Measurements Limit: When you're connecting to CCX-compatible access point, check this box to enable measurement on unused radio channels to improve wireless connectivity. After you finish the settings, click `Apply' to apply new settings. 37 2. 5 View Network Statistics The configuration utility provides information about network statistics and link status. If you want to know how your wireless network card works, you can use these functions to get detailed information about the wireless connection you're using. [. . . ] Direct-sequence spread-spectrum (DSSS) generates a redundant bit pattern for each bit to be transmitted. The longer the chip is, the greater the probability that the original data can be recovered. Even if one or more bits in the chip are damaged during transmission, statistical techniques embedded in the radio 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. 13. [. . . ]