A power spectral density is the measure of a signal's power content versus frequency. You
can view the power spectral density of a signal while analysing data in the frequency
domain; this is helpful for determining which frequency ranges have strong or weak
variations in power.
Complete the following steps to measure
spectral density in InstrumentStudio:
Add an oscilloscope to the large panel.
Create an FFT channel by selecting the FFT
button in the Add Channels section of the large
A frequency chart opens underneath the large panel time
Configure the FFT Axis settings:
In the header of the frequency chart, select the Chart Options
In the Y-axis section, change Units to
In the X-axis section, set Scaling to
Run the panel if it is not already running.
InstrumentStudio plots power spectral density data on the Frequency
For better frequency resolution, you can
configure averaging through the FFT channel settings, or you can modify the RBW through
the axis settings in Chart Options.