The Digi XCTU spectrum analysis tool lets you determine the spectrum of a selected radio band. Once you select a radio and run the analysis, you can see the noise level of the channels, including best, worst, and average measurements.
The Digi XCTU
Spectrum Analyzer measures energy levels across various radio channels in real time, keeping track with graphs and statistics to help you select the best configuration for your network. Avoiding channels with high interference will make your network more reliable, help prevent data loss and extend battery life. The Spectrum Analyzer is also a powerful troubleshooting tool, to help locate sources of unwanted radio noise.