User's Manual

Tsunami MP.11 2454-R, 5054-R, and 5054-R-LR Installation and Management
Chapter 5. Using the Web Interface 65
channel blacklist list. It is not possible to select the DFS preferred channel from those channels in the DFS
channel blacklist list indicated as “Enable”.
Channel Blacklist Table
The DFS channel blacklist table shows all the channels in the current bandwidth and specifies the blacklist
status of each channel as one of the following:
• Enable – Channels that are made unavailable either for a certain period of time upon detection of a radar
signal, or permanently because the operator has configured them as blacklisted. These channels are
skipped over during DFS channel selection.
• Disable – Channels that are to be scanned during DFS.
Edit Entries to the Channel Blacklist Table
In accordance to the EN301-893 non-occupancy rule, when a radar signal is detected on any active channel, the
blacklist status of that channel will change to “Enable” and the Radar Detected status will change to TRUE (see
previous figure). The channel will not be used for a period of 30 minutes after the radar signal has been detected.
The elapsed time is also shown in the DFS channel blacklist table. When the elapsed time for a channel in the
blacklist is greater than or equal to 30 minutes, the blacklist status of the channel will change to Disable and the
Radar Detected and Elapsed Time fields will change accordingly.
If an operator knows in advance on which channels a radar signal is likely to exist, those channels can be
blacklisted and hence they will be skipped during DFS. Similarly, if the operator knows of channels where a radar
signal is unlikely to be detected, those channels can be defined as active and hence they will be scanned during
DFS. This makes the whole process more efficient.
When you click Edit the channel blacklist table screen appears. Here you can manually configure each channel
as “active” (Blacklist Status = Disable) or “blacklisted” (Blacklist Status = Enable). Enter your changes and click
OK. To go back, click on the arrow button.