The main function of the Spectrum Analyzers System is to display the spectral characteristics of the input signal in the frequency domain. There are two types of spectrum analyzers depending on the signal processing method;

Frequency Characteristic Analyzer, commonly known as frequency sweepers, are used to measure the frequency characteristics of networks (circuits), such as measurement filters

The Fast High Quality Function Generators is a signal generating device that can generate certain periodic time function waveforms (sine waves, square waves, triangle waves, sawtooth waves, pulse waves, etc.), and the frequency range can be from a few microhertz to several Ten megahertz.

A more suitable instrument for measuring electromagnetic interference is a Spectrum Analyzers. A spectrum analyzer is an instrument that displays the law of voltage amplitude as a function of frequency.

A Spectrum Analyzer is an instrument that studies the spectral structure of an electrical signal. It is used to measure signal distortion, modulation, spectral purity, frequency stability...

Now, Arbitrary Waveform Generator (AWG) and Function Generators​ (FG) can overcome these difficulties and provide unprecedented flexibility to provide engineers with a variety of signals.