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channel-spectrum width modes will be tuned accordingly to the regulations of the selected
country.
No Country Set
:
Option when checked; only the frequency range is available.
11n 2.4GHz is 2412-2462MHz.
Wireless Profile:
The
NG
is 11n 2.4GHz band and represents a mix of 802.11
n
, 802.11
g
and
802.11b mod
e.
Channel Spectrum Width
The 20M represents the data transmitted at a bandwidth of 20MHz. 20/40MHz and represents the
data transmitted at either 20MHz or 40MHz. In a noisy environment, it automatically falls back to
20MHz, in order to be more resilient to the interference. If auto fall back does not happen,
manually change the channel spectrum width to 20MHz, and this will help reduce interference on
the link and improve performance.
*
Note: The 40MHz bandwidth is non-standard for 802.11n/g in operation mode. If you
experience unstable performance, change the channel spectrum width to 20M.
Channel
– Frequency
This is the frequency selection the user can set the device to operate on. The frequency range
available depends on the country domain the user selected in
‘Country Code’. Selecting one of
these frequencies for operation may have an effect on the device and can delay for two or more
minutes(possibly up to 10 minutes in some situations) when attempting to establish a connection.
Auto
:
When checked, during startup, the device automatically selects the least interfering
channels (or frequency) for the operation.
Data Rate
Data rates consist of both the legacy rates and the MCS (Modulation Coding Scheme
– Only for
802.11n) rates.
Legacy rates are 6
– 54Mbps
MCS0 to MCS7
are 802.11n rates, which use only one stream.
MCS8 to MCS15
are 802.11n rates, which use two streams.
Auto
:
The data rate selected will follow an advanced rate algorithm that takes into
condition the amount of errors at the data rate and fine tune to the best data rate it can
use.
Transmit Power
The maximum transmit power displayed is determined by the country code and the maximum
transmit power of the miniPCI that is being used.
*Note
on Changing Channels:
When the operator changes the channels, and the new frequency has a higher power output
permitted by regulation, then the previously selected low power level will remain unchanged.
The user then needs to readjust the power level in order to take advantage of the higher
power output available for the channel.