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Facilité d'utilisation
When the wireless node is operating in Ad-Hoc mode, this field operates as the Basic Service Set ID (BSSID). All wireless nodes in the same network should use the same BSSID. When in Infrastructure mode, this field defines the Extended Service Set ID (ESSID). The ESSID assigned to the wireless node is required to match the Access Point ESSID in order for them to communicate. Channel Specifies a channel only when using an Ad-hoc network mode. Security To prevent unauthorized wireless stations from accessing data transmitted over the network, the Security section of the Configuration Utility offers secure data encryption, known as WEP (Wired Equivalent Privacy), to better protect your data transmissions. To activate the WEP Encryption, make sure the Enable Encryption box displays a checkmark (as shown on previous page). Enable Encryption box displays a checkmark (as shown on previous page). WEP Encryption options will be displayed, as shown on the previous page. You may make changes, as detailed here: 1. Select one of the two options: Create with Passphrase or Manual Entry. A Passphrase makes you easier to enable WEP because it automatically generates the WEP hexadecimal numbers for the key. If the wireless network Access Point uses a Passphrase, you can also use that here. Otherwise, you will have to manually enter the hexadecimal numbers. 2. Create with Passphrase option: pull down the Key Length options and select the 64-bit or 128-bit, then type in your Passphrase. 3. Manual Entry option: • Pull down the Key Length options and select the 64-bit or 128-bit, encryption method. • In the Encryption Keys fields, specify the WEP keys: For 64-bit encryption: Hexadecimal: 10 hexadecimal digits in the range of “A-F”, “a-f” and “0-9” (e.g. 11AA22BB33) For 128-bit encryption: Hexadecimal: 26 hexadecimal digits in the range of “A-F”, “a-f ” and “0-9” (e.g. 00112233445566778899AABBCC). 4. When you are done, click the Apply button and click OK for the changes to take effect. Important Note: The WEP keys must be set up exactly the same on all wireless devices in order to communicate with each other. This table describes the options available from the Security section: Security Description Enable Encryption Enables the data encryption for the wireless node. If you disable the data encryption (by unchecking the box) then no encryption method will be used; this is also called Open System data encryption. To enable encryption is to use the Shared Key data encryption method. Create with Passphrase A Passphrase is use to automatically generate the WEP hexadecimal numbers for the key. If your wireless network Access Point uses a Passphrase, you can use that here. Once you type in the Passphrase, the generated key will be shown before you click OK or Apply button. Manual Entry The WEP hexadecimal numbers are needed if a Passphrase is not used in the wireless Access Point but rather if the key is manually entered. Key Length The key length must be the same between all wireless nodes and Access Points in the same network. The possible values for the data encryption level are 64-bit and 128-bit. The 64-bit data encryption is also called 40-bit data encryption by some vendors. Key1 Key2 Key3 Key4 The MA521 device uses a selected WEP key to encrypt and decrypt information. When set to 64-bit (also called 40-bit), or 128-bit data encryption mode, you may specify up to four different keys to encrypt wireless data. Select one of the keys as a default key. Advanced Settings The advanced settings give you flexibility to control your MA521 card to adjust with an access point or other client devices in certain environment. This table describes the options available from the Security section: Status Description Transmit Rate The Transmit Rate field allows to define the data transfer rate. The default value if Fully Automatic. In this case, the best transfer rate is negotiated between this wireless node and access point or another wireless note that it is communicating with. Other option values for this field are 1, 2, 5.5 and 11 Mbps. Power Saving Power saving options are Off, Normal, and Maximum. Power saving is disable when Ad-Hoc mode is selected in the Network Mode field. When the Power Saving setting is Off, the adapter receives full power from the PC. When the setting is Normal, the driver turns off power to the MA521 Wireless PC Card for brief periods over briefly-spaced time intervals. When the setting is Maximum, the driver turns off power to the MA521 Wireless PC Card for longer periods over more widely- spaced time intervals. Transmit Power This option controls the Radio Frequency (RF) output power. Selects 100%, 50%, 25%, 12.5%, or Minimum. Preamble Type A long transmit preamble allows the receiver (MA521 Wireless PC Card) to lock into the received bit patterns more easily. A short transmit preamble provides better performance. Default: Auto (long & short). Fragmentation Threshold This is the packet length used for fragmentation...