599| Spectrum Analysis DellPowerConnect W- Series ArubaOS 6.2 | User Guide
95 dBm anda 40 MHz channel has a noise flooraround -92 dBm. Certain types offixed-frequency continuous
transmitters such as video bridges, fixed-frequencyphones, and wireless cameras typically elevate the noise floor seen
by the spectrum monitor. Other interfererssuch 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 and thereforeesti mating and understandingthe actual noise floor of the radio is crit ical to understanding
the reliability of the RF environment.
The chart also includesi nformationabout the AP on each channel with the highest power level. You can hover your
mouse over anA P on the chart to view the AP’s name, SSID and currentpower level. The example below shows that
the AP with the maximum power on channel157 has the SSID qa-ss, and a power level of -55dBm.
Figure 223: InterferencePower
Table2 24 describes the other optional parametersyo ucan use to c ustomize the interferencepower chart. Click the
down arrow in the upperright corner of this chart then click the Options menu to access these configuration
settings. Once you have configuredthe desired parameters, click OK at the bottom of t heOptions menu to save
your settings and returnt o the spectrum dashboards.
Parameter Description
Band Radio band displayed in this graph.
Forspectrum monitor radios using the 5 GHz radio band, click the Band drop-down list and select 5
GHzupper,5GHz middle or 5Ghz low er todi splaydata for that portion of the 5Ghzradio band. This
parameteri s not configurable for graphs created by hybrid APs or spectrum monitor radios that use
the2.4 GHz radio band.
Channel Numbering Forspectrum moni torsusing the 5 GHz radio band, select either 20 MHz or 40 MHz channel
numbering to identifya channel numbering scheme for the graph.
NOTE:Thi s parameter is not configurable for graphs created by hybrid APs or spectrum moni tor
radiosthat use the 2.4 GHz radio band. A hybrid AP on a 20 MHz channel sees 40MHz Wi -Fi dataas
non-Wi-Fi data.
Show Bydefault, this chart displays data for the current noise floor, adjacent channel interference (ACI),
andthe maxim um AP power level for each channel. To display interference power levels form other
devices,cl ick theshow checkbox then click the show drop-down list and select one of the following
Table22 4:

InterferencePowerOptions