User manual

12
Advanced
Parameter Description
Power Saving Disable – The card will always set in active mode.
Enable (Fast) – Enable the card in the power saving mode when it is idle,
but some components of the card is still alive. In this mode, the power
consumption is larger than “Max“ mode.
Enable (Max) – Enable the card in the power saving mode when it is idle.
Preamble Type The preamble defines the length of the CRC block for communication
among the wireless networks. There are three mode including Long, Short
and Auto. High network traffic areas should use the shorter preamble
type. If “Auto“ mode is selected, the card will auto switch the preamble
mode depending on the wireless networks card is connecting to.
Fragment 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 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 wireless network. Select a setting within a range
of 0 to 2347 bytes. Minor change is recommended.
Receive Antenna Define the receive antenna. If “Diversity” is selected, the card will auto
switch to the antenna with high signal strength to receive data.
3.1.2 Enable WPA
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.
WPA function is enabled in the following software system:
1. Windows XP Service Pack 1 with Windows XP Support Patch for Wi-Fi Protected Access program
in addition.
2. Configure the card by Wireless built-in utility (Wireless Zero Configuration).