User guide

5-15
Cisco WLAN Controller Web Interface User Guide
OL-7416-04
Chapter 5 Wireless Menu Bar Selection
802.11a Cisco radio
Configuring Tx Power Levels
The Current Tx Power Level setting controls the maximum conducted transmit power. The maximum
available transmit power varies according to the configured channel, individual country regulation, and
access point capability. Refer to the Product Guide or data sheet at www.cisco.com for each specific
model in order to determine the capability of the access point.
A Current Tx Power Level setting of 1 represents the maximum conducted power setting for the access
point. Each subsequent power level ( 2, 3, 4, etc) represents approximately a 50% (or 3dBm) reduction
in transmit power from the previous power level.
Note The actual power reduction may vary slightly for different models of access points.
Based on the configured antenna gain, the configured channel, and the configured power level, the actual
transmit power at the access point can be reduced so that the specific country regulations are not
exceeded.
Note Irrespective of whether you choose Global or Custom assignment method, the actual conducted transmit
power at the access point is verified such that country specific regulations are not exceeded.
Command Buttons
• Back: Return to the previous window.
• Apply: Data is sent to the controller and made to take effect, but not preserved across a power cycle;
these parameters are stored temporarily in volatile RAM.
• Help: Request that the help page be displayed in a new browser window.
Table 5-15 Tx Power Level Assignment
Parameter Description
Current Tx Power Level The transmit power level of the access point. Tx Power Level indicates the
maximum power.
Note The power levels and available channels are defined by the Country
Code setting, and are regulated on a country by country basis.
Assignment Method Select one of the following:
• Global—Use this setting if your access point’s transmit power is set
globally by the controller.
• Custom—Use this setting if your access point’s transmit power is set
locally. Select an option from the drop-down list.
For example, if you select 2(17 dBm) as the custom power, 2
corresponds to the Power Level and 17 is the Absolute Power
(dBm).
Note The assignment method should be left at the global setting. This allows the controller to
dynamically change the transmit power level based on the Radio Resource Management (RRM).