Manual Part 2

Wireless Array
292 Configuring the Wireless Array
while 2.4GHz includes 802.11b and 802.11g choices. When you select a
WiFi Mode for an IAP, your selection in the Channel column will be
checked to ensure that it is a valid choice for that WiFi Mode.
By selecting appropriate WiFi Modes for the radios on your Arrays, you
can greatly improve wireless network performance. For example, if you
have 802.11n and 802.11ac stations using the same IAP, throughput on
that radio is reduced greatly for the 802.11ac stations. By supporting
802.11n stations only on selected radios in your network, the rest of your
802.11ac IAPs will have greatly improved performance. Take care to
ensure that your network provides adequate coverage for the types of
stations that you need to support.
5. In the Channel field, select the channel you want this IAP to use from the
channels available in the pull-down list. The list shows the channels
available for the IAP selected (depending on which band the IAP is
using). Channels that are shown in gray are unavailable. They are either
already in use, or not offered for the selected Band.
The channels that are available for assignment to an IAP will differ,
depending on the country of operation. If Country is set to United States
in the Global Settings (IAP) window, then 21 channels are available to
802.11an radios.
6. Set Channel Lock to Block auto-channel assignment if you want to lock
in your channel selection so that an autochannel operation (see Advanced
RF Settings) can’t change it. A locked padlock will be displayed for
the IAP.

As mandated by FCC/IC law, Arrays continually scan for signatures of
radar. If such a signature is detected, the Array will switch operation from
conflicting channels to new ones. The Array will switch back to the original
channel after 30 minutes if the channel is clear. If a radio was turned off
because there were no available channels not affected by radar, the Array will
now bring that radio back up after 30 minutes if that channel is clear. The 30
minute time frame complies with FCC/IC regulations.