Users Guide

Figure 129 Quality Spectrogram
When you hover your mouse over any part of the spectrogram, a tooltip shows the devices the spectrum
monitor detected on that frequency, the BSSID of the device (if applicable), the power level of the device in
dBm, the time the device was last seen by the spectrum monitor, and the channels affected by the device.
The following table describes the other optional parameters you can use to customize the Quality
Spectrogram. 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.
Parameter Description
Band Radio band displayed in this graph.
For spectrum monitor radios using the 5 GHz radio band, click the Band drop-down list
and select 5 GHz upper, 5GHz middle or 5Ghz lower to display data for that portion of
the 5Ghz radio band. This parameter is not configurable for graphs created by hybrid APs
or spectrum monitor radios that use the 2.4 GHz radio band.
Channel
Numbering
This parameter is not configurable for graphs created by hybrid APs or spectrum monitor
radios that use the 2.4 GHz radio band. A hybrid AP on a 20 MHz channel sees 40 MHz Wi-
Fi data as non-Wi-Fi data. For spectrum monitors using the 5 GHz radio band, click the
Channel Numbering drop-down list and select either 20 MHz or 40 MHz channel
numbering to identify a channel numbering scheme for the graph. Graphs for AP radios
that support 802.11ac include an additional 80MHz option for very-high-throughput
channels.
Channel
Range
Specify a channel range to determine which channels appear in the x-axis of this chart.
Click the first drop-down list to select the lowest channel in the range, then click the
second drop-down list to select the highest channel to appear in the chart.
NOTE: This parameter is not configurable for graphs created by hybrid APs.
Table 165: Quality Spectrogram Options
Real-Time FFT
The Real-time FFT chart displays the instantaneous Fast Fourier Transform (FFT) signature of the RF signal seen
by the radio. The Fast Fourier Transform (FFT) converts an RF signal from time domain to frequency domain.
Dell Networking W-Series ArubaOS 6.4.x | User Guide Spectrum Analysis | 810