Intermodulation distortion (IMD) plays an important role for many spectrum analyzer based measurements. Mostly spectrum analyzers are used to measure IMD of a DUT. However, a spectrum analyzer may also contribute to IMD due to the non-linear behavior of its different active components used in its signal path.
In this application note you will find:
Detailed theoretical background of intermodulation distortion
Comparison of the differences in architecture between the analog narrow-band spectrum analyzer approach and a modern wide-band signal and spectrum analyzer
TOI measurements of a DUT in practice
Guidelines on how to obtain accurate IMD measurement results