User's Manual

Appendix 5-7
Preamble Type (Short/Long): Preamble is the first sub field of PPDU,
which is the appropriate frame format for transmission to PHY (Physical
layer). There are two options, Short Preamble and Long Preamble. The
Short Preamble option improves throughput performance
Rate: By default the unit adoptively selects the highest possible rate for
transmission. Select the basic rates to be used among the following
options 1-2-5.5-11 (Mbps).
Auto Rate Fall Back: When this is enabled the transmission rate is the
optimum rate. In case of obstacles or interference, the system will
automatically fall back.
Regulatory Domain: The value of this field is already set and cannot
be modified.