WOP-2L. User manual
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Primary Channel
– the parameter can only be changed if the bandwidth of a statically specified channel is
equal to 40 MHz. The 40 MHz channel can be considered as consisting of two 20 MHz channels, which
border in the frequency range. These two 20 MHz channels are called primary and secondary channels. The
primary channel is used by clients who only support 20 MHz channel bandwidth:
Upper
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the primary channel will be the upper 20 MHz channel in the 40 MHz band;
Lower
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the primary channel will be the lower 20 MHz channel in the 40 MHz band.
Transmission Power Limit, dBm
– transmitting Wi-Fi signal power adjustment, dBm. May take values
between 11 and 16 dBm;
Fixed Transmit Rate
– fixed wireless data transmission rate which is defined by IEEE 802.11b/g/n
standards.
In the «Advanced» section, you can configure advanced device’s radio interface parameters.
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If the 'Use Limit channels' list contains a channel that is not available for selection, it will be marked in
grey. In order for the new configuration to be applied to an access point, only available (blue highlighted)
channels must be specified in the 'Use Limit channels' list.
Example.
No settings have been made on the access point yet, Radio 1 is set to 20 MHz 'Channel
Bandwidth' by default, and channels are specified in the 'Use Limit Channels' list: 1, 6, 11.
Suppose the parameter 'Channel Bandwidth' is set to 40 MHz. When you change this parameter from 20
MHz to 40 MHz, the following happens:
the 'Primary Channel' parameter becomes available for editing and the default value is 'Lower';
channel 11 in the 'Use Limit Channels' list changes its color from blue to gray.
If you change the 'Channel Bandwidth' parameter to 40 MHz and do not remove the 'grey' channels from
the list, then when you click on the 'Apply' button in the browser an error will appear – 'There are errors in
data. Changes was not applied'. Accordingly, the access point configuration will not be changed. This is
due to the fact that channels in the 'Use Limit Channels' list that are highlighted in grey do not fit the
definition 'Primary channel' = Lower.
