TRENDnet TEW-821DAP User Manual page 37

TRENDnet User's Guide
• Transmit Power: Wireless signal transmission power. Setting transmission power
to an appropriate value can make your multiple AP deployment easier. The default
value is 18 dBm. Valid settings are between 11 and 18 (both FCC and CE).
• RTC/CTS Threshold: Packets over the specified size will use the RTS/CTS
mechanism to maintain performance in noisy networks and to prevent hidden
nodes from degrading the performance. Specify a value between 1 and 2346. The
default value is 2346.
• Beacon Period: Beacons are packets sent by the access point to synchronize
wireless devices. Specify a Beacon Period value between 100 and 1000. The
default value is set to 100 milliseconds.
• DTIM: A DTIM is a countdown informing clients of the next window for listening to
broadcast and multicast messages. When the access point has buffered broadcast
or multicast messages for associated clients, it sends the next DTIM with a
DTIM Interval value. Wireless clients detect the beacons and awaken to receive
the broadcast and multicast messages. The default value is 1. Valid settings are
between 1 and 255.
• Fragment Threshold: This setting should remain at its default value of 2346.
Setting the Fragmentation value too low may result in poor performance.
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• Short Preamble: Disable this feature if you do not want the access point to use it
at data transfer.
4
In HD Physical Mode section, modify any of the following parameters:
• Guard Interval: Using a short (400ns) guard interval can increase throughput.
However, it can also increase error rate in some installations, due to increased
sensitivity to radio-frequency reflections. Select the option between Auto and
Long that works best for your installation.
• A-MPDU: MPDU aggregation also collects Ethernet frames to be transmitted
to a single destination, but it wraps each frame in an 802.11n MAC header.
Normally this is less efficient than MSDU aggregation, but it may be more efficient
in environments with high error rates, because of a mechanism called block
acknowledgement. This mechanism allows each of the aggregated data frames to
be individually acknowledged or retransmitted if affected by an error
5
In Client Limit section, check Enable if you want to limit the number of clients and set
the maximum number of clients that can connect to TEW-821DAP. If you do not want
to use this feature, check Disable.
TEW-821DAP
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