TRENDnet TEW-824DRU User Manual page 32

TRENDnet User's Guide
preamble 192 microseconds. However, using a short preamble is not supported
using 802.11b legacy devices, in some cases cause wireless interoperability
issues, and increase the error rate in some installations. The preamble is the
info. sent from the wireless transmitter to the receiver indicating when data is
incoming.

Short Slot: Short Slot Override defines the amount of time a device waits after
a data frame collision before retransmitting the data. Reducing the time from
20 microseconds (standard) to 9 microseconds can potentially increase
throughput however, can also increase the error rate.

20/40 Coexistence (2.4GHz only): 20/40 MHz Coexistence allows for the auto-
fallback from 40MHz to 20MHz channel width operation when neighboring
802.11 wireless networks are detected.

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.

MCS – Allows you to lock down the wireless transmission rate.

Extension channel – Allows you to assign either the upper or lower extension
channels to use for channel bonding when establishing connectivity at the
higher channel widths 40MHz and 80MHz.

A-MPDU: Using Aggregate Multiple Protocol Data Unit will allow the all frames
transmitted to be aggregated into larger size A-MPDU formatted frames before
sending and receiving potentially increasing the overall throughput.
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