Spectrogram shows the average power level measured at each of the frequencies in the scan settings over a period of time. The graph is cleared when a scan starts and updates regularly as data becomes available during the scan.
When a scan starts, data starts showing in the right side of the graph. As new data is scanned, the older data moves to the left. Once the graph is full, a horizontal scroll bar becomes visible.
You can display the frequency and power value by moving the cursor over points in the graph.
The Duty Cycle chart shows the duty cycle values for the most recent time slice and an average of the duty cycles across all time slices. When the cursor is placed over the Duty Cycle chart, the frequency and duty value is highlighted and displayed. Also, the status bar displays the frequency, duty value, average power, and average pulse power.
You can adjust the size of the Spectrogram and Duty Cycle chart by clicking and dragging the divider (left or right) between them. The size of the charts may be adjusted along the X axis by dragging a divider which is shown between the spectrogram and the duty cycle chart.