Parameter

Description

 

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

For spectrum monitors using the 5 GHz radio band, select either 20 MHz or 40 MHz channel

 

numbering to identify a channel numbering scheme for the graph.

 

NOTE: This parameter is not configurable for graphs created by hybrid APs or spectrum monitor

 

radios that use the 2.4 GHz radio band.

 

 

X-Axis

Select either Channel or Frequency. to show FFT power or duty cycles for a range of channels or

 

frequencies. If you select Frequency, you must select the radio frequency on which this chart

 

should center, and determine the span of frequencies for the graph.

 

 

Channel Range

If you selected Channel in the X-Axisparameter, you must also 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.

 

 

Center Frequency

If you selected Frequency in the X-Axisparameter, enter the frequency, in MHz, that you want to

 

appear in the center of the x-axis of this chart.

 

 

Span

If you selected Frequency in the X-Axisparameter, 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 would appear as red, and any FFT power level at or below -80 would appear

 

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% would appear as red, and any FFT duty cycle at or below 75% would appear 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:

Active Devices

Active Devices Table

Active Devices Trend

Device Duty Cycle

Dell PowerConnect W-Series ArubaOS 6.2 User Guide

Spectrum Analysis 606

Page 606
Image 606
Dell 6.2 manual Working with Non-Wi-Fi Interferers

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