Spectrum analyzer is a kind of instrument for studying the structure of electric signal spectrum. It is used for the measurement of signal distortion, modulation, spectrum purity, frequency stability and intermodulation distortion.
It can be used to measure some parameters of amplifier and filter circuit system. It is a multi-purpose electronic measuring instrument.
The main function of the spectrum analysis system is to display the spectral characteristics of the input signal in the frequency domain. Spectrum analyzer in accordance with the different signal processing methods, there are generally two types: Real-Time Spectrum Analyzer and Sweep-Tuned Spectrum Analyzer.