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Table Of Contents
776| Spectrum Analysis Dell Networking W-Series ArubaOS 6.5.x| User Guide
Parameter Description
Span If you selected Frequency in the X-Axis parameter, specify the size of the range
of frequencies around the selected center frequency. If you set a frequency span
of 100 MHz, for example, the chart shows the swept spectrogram for a range of
frequencies from 50MHz lower to 50 MHz higher than the selected center.
Color-Map Range If this chart is configured to show average or maximum FFT values, the default color
range on this chart represents values from -50dBm (red) to -90dBm (blue). If you
would like the color range on this chart to represent a different range of FFT power
levels, enter this range in the from and to entry blanks.
For example, if you defined a color-map range from -60 to -80, then any FFT power
level at or above -60 dBm appears as red, and any FFT power level at or below -80
appears blue. Only the channel or frequency qualities between -60 dBm and -80
dBm would be represented by gradiented colors within the color range.
If this chart is configured to show the FFT duty cycle, the default color range on this
chart represents duty cycles from 0% (red) to 100% (blue). If you would like the
color range on this chart to represent a different range of FFT duty cycle
percentages, enter this range in the from and to entry blanks.
For example, if you defined a color-map range from 25 to 75, then any FFT duty
cycle at or below 25% appears as red, and any FFT duty cycle at or below 75%
appears blue. Only the duty cycle levels between 25% and 75% would be
represented by gradiented colors within the color range.
NOTE: If your swept spectrogram is showing a single color only, you may need to
increase the color map range to display a greater range of values.
Show Select FFT Avg, FFT Max or FFT Duty Cycle to select the type of data you want to
appear in this chart.
Working with Non-Wi-Fi Interferers
The following table describes each type of non-Wi-Fi interferer detected by the spectrum analysis feature.
These devices appear in the following charts:
l Active Devices
l Active Devices Table
l Active Devices Trend
l Device Duty Cycle
l Device vs Channel
l Interference Power