Specifications

12-6 Enterprise WLAN Antenna Specification Guide
For the 5.2 GHz radio, specify A and N, A Only or N Only to define whether the 802.11a/n radio
transmits in the 5.2 GHz band exclusively for 802.11a clients, 802.11n clients or transmits in the 5.2 GHz
band for both 802.11a/n clients.
The rates for the access point’s 5.2 GHz radio are:
• A Only Allows 11a rates
• N Only Requires basic MCS rates
• A and N Allows only 11a basic rates (default setting)
13.For this example, leave the Channel Width at 20/40 and set the Channel to User selected for both the
802.11 b/g/n and 802.11 a/n radios.
20/40 MHz operation (the default setting for the 5 GHz radio) allows the access point to receive packets
from clients using 20 MHz of bandwidth while transmitting a packet using 40 MHz bandwidth. This mode
is supported for 11n users on both the 2.4 and 5 GHz radios. If an 11n user selects two channels (a Primary
and Secondary channel), the system is configured for dynamic 20/40 operation. When 20/40 is selected,
clients can take advantage of “wider channels.” 802.11n clients experience improved throughput using
40 MHz while legacy clients (either 802.11a or 802.11b/g depending on the radio selected) can still be
serviced without interruption using 20 MHz.
User selected is the default Channel Selection setting. If 20/40 MHz is selected as the Channel Width
(supporting 11n), the Secondary Channel drop down menu becomes enabled. The user must define the
primary channel first. Then, depending on the primary channel defined, the secondary channel list is filled
with channels making the combination of primary and secondary channels valid. The actual channels
available depend on regulatory domain requirements.
14.Set the Power Level in respect to the antennas deployed and the defined channel.
15.Select Status and Statistics > Radio Stats > Radio1(802.11b/g/n) Statistics or Radio2
(802.11a/n) Statistics from the access point menu tree.
Refer to the Current Channel parameter from within the Information field. This value displays (in red)
the two channels utilized as a result of selecting 20/40 as the Channel Width. The first value represents
the channel utilized for the 20 MHz bandwidth and the second value (displayed in parenthesis) is the
channel supporting 40 MHz.
NOTE: If you set the transmit power too high (in relation to FCC transmit requirements),
the access point will display an Input Error message stating the maximum power level for
the selected channel has been exceeded.