User guide

74 Chapter 6: Analyzing Spectrum Data
AirMagnet Spectrum XT User Guide
Channel Power Types
The Channel Power can be defined either as Envelope or Integrated. Envelope power is
defined as the maximum, or peak, energy level in a channel’s frequency range. Integrated
power is similar, and is defined as the average power of all frequency power levels in a
channel’s frequency range. In the bar chart, the Max bar corresponds to the Max data line on
the FFT chart, while the Avg bar corresponds to the Average data line on the FFT graph.
With the chart set to the Envelope power type, the Max bar will show the dBm power of the
strongest received signal within the 20MHz channel frequency width as recorded by the Max
data line in the FFT chart, while the Avg bar will show the highest dBm value of the Average
data line for the same channel frequency width.
With the chart set to the Integrated power type, the application first samples the data from the
Max and Average data lines in the FFT graph, then calculates the average power of all the
sampled frequencies within the 20MHz channel frequency width. These values are then
represented by the Max and Avg bars in the chart.
Note: If you place the cursor over a channel, a tooltip will pop up showing the Maximum and
Average power readings on that channel.
Configuring Channel Power Graph Parameters
You can set or change the parameters of the Channel Power graph using the Chart
Configuration button.