Specifications

Chapter 4 - Operation Menus and Parameters
BreezeNET B 101 System Manual
4.2.6.2.3 Frequency Definition Parameters
4.2.6.2.3.1 Sub-Bands and Frequency Selection
Each unit is delivered with one or more pre-configured Sub-Bands, according to
the country code. These sets of parameters include also the frequencies that can
be used and the bandwidth.
The parameters that determine the frequency to be used are set in the BU. If more
than one Sub-Band is available, the sub-band to be used can be selected. If only
one Sub-Band is supported, then the sub-band selection option is not available.
The RB should be configured with a minimal set of parameters to ensure that it
will be able to automatically detect and use the frequency used by the BU,
including possible changes in this frequency (Automatic Sub Band Select feature).
To simplify the installation process the RB scans a definable frequencies subset
after power-up. The defined frequencies subsets may include frequencies from
more than one Sub-Band, enabling automatic detection of both frequency and
bandwidth. If the Best BU feature is enabled, the RB will scan the defined subset
and the operating frequency/bandwidth will be determined by the Best BU
mechanism (including the optional use of the Preferred BU feature). Otherwise the
RB will try to associate with the first BU it finds. If no BU is found, the RB will
start another scanning cycle.
4.2.6.2.3.2 Avoiding Frequencies with Radar Activity
In some regions, it is important to ensure that wireless equipment does not
interfere with certain radar systems in the 5 GHz band. If radar is being detected,
the wireless equipment should move automatically to a frequency that does not
interfere with the radar system.
The country dependent set of parameters includes also an indication whether DFS
(Dynamic Frequency Selection) should be used. The DFS algorithm is designed to
detect and avoid operation in channels with radar activity. If the current sub-band
does not support DFS, then the DFS parameters configuration submenu is not
available.
When DFS is enabled, the unit monitors the spectrum continuously, searching for
signals with a specific pattern indicating radar activity. Upon detecting radar
activity, the unit immediately stops transmitting on this frequency and starts
NOTE
Radar detection parameters that are enforced by Country Code specific regulations are editable
only by users with Administrator privileges. When enabling a Country Code that requires particular
DFS settings, the unit automatically applies these settings. Users with Installer privileges will be
able to set a particular Country Code, but they will not be able to change its default DFS settings.