that is contributing to the maximum ACI may or may not be very actively transmitting data to other clients at
all times. The ACI power levels are derived from the signal strength of the beacons.
This chart displays the noise floor of each selected channel in dBm. The noise floor of a channel depends on
the noise figure of the RF components used in the radio, temperature, presence of certain types of interferers
or noise, and the width of the channel. For example, in a clean RF environment, a 20 MHz channel has a noise
floor around -95 dBm and a 40 MHz channel has a noise floor around -92 dBm. Certain types of fixed-
frequency continuous transmitters such as video bridges, fixed-frequency phones, and wireless cameras
typically elevate the noise floor seen by the spectrum monitor. Other interferers such as frequency-hopping
phones, Bluetooth, and Xbox may not affect the noise floor of the radio. A Wi-Fi radio can only reliably decode
Wi-Fi signals that are a certain dB above the noise floor. Therefore estimating and understanding the actual
noise floor of the radio is critical to understanding the reliability of the RF environment.
The chart also includes information about the AP on each channel with the highest power level. You can hover
your mouse over an AP on the chart to view the AP’s name, SSID, and current power level. The example below
shows that the AP with the maximum power on channel 157 has the SSID qa-ss, and a power level of -55dBm.
Figure 130 Interference Power
Table 174 describes the other optional parameters you can use to customize the interference power chart.
Click the down arrow in the upper right corner of this chart then click the Options menu to access these
configuration settings. Once you have configured the desired parameters, click OK at the bottom of the
Options menu to save your settings and return to the spectrum dashboards.
AOS-W 6.5.3.x | User Guide Spectrum Analysis | 779
To Next Page
Loading...