User manual TRENDNET TEW-637AP

[. . . ] 1 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. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. [. . . ] Select the option that works best for your installation. MCS This parameter represents transmission rate. By default (Auto) the fastest possible transmission rate will be selected. You have the option of selecting the speed if necessary. Reserve Direction Grant (RDG) Disable or enable reserve direction grant. Extension Channel When 20/40 channel bandwidth has been chosen, you should select extension channel to get higher throughput. Aggregation MSDU (A-MSDU) Disable or enable aggregation MSDU. Auto Block ACK Disable or enable auto block ACK. Decline BA Request Disable or enable decline BA request. Default is disabled. Page 22 WIRELESS ADVANCED Beacon Interval Beacons are packets sent by a wireless Access Point to synchronize wireless devices. Specify a Beacon Period value between 20 and 1000. The default value is set to 100 milliseconds. Fragment Threshold This setting should remain at its default value of 2346. Setting the Fragmentation value too low may result in poor performance. RTS Threshold This setting should remain at its default value of 2347. If you encounter inconsistent data flow, only minor modifications to the value are recommended. Preamble Type: Long Preamble / Short Preamble The radio preamble is a section of data at the head of the Physical Layer Convergence Protocol that contains information that the device and client devices need when sending and receiving packets. The 18 byte ("long preamble") preamble is used to signal "here is a train of data coming" to the receiver. The 802. 11b standard gives an option of reducing the size of the PLCP preamble to 9 bytes ("short preamble"), this significantly increases the throughput performance at higher data rates. One downside to the PLCP is that the PLCP preamble and header is always transmitted at 1Mbps, regardless of the transmission rate for the rest of the data. This means that the transfer time is constant at 192 Usec (microseconds) for the PLCP with long preamble. The short preamble version does a little better, Page 23 transmitting the shorter preamble at 1Mbps and the header at 2Mbps, shortening the transmit time to 96 Usec. [. . . ] Please contact the point-of-purchase for their return policies. TRENDnet shall not be responsible for any software, firmware, information, or memory data of customer contained in, stored on, or integrated with any products returned to TRENDnet pursuant to any warranty. There are no user serviceable parts inside the product. Do not remove or attempt to service the product by any unauthorized service center. [. . . ]