While Network Analyzer is primarily used to analyze the performance and characteristics of networks, such as measuring impedance, reflection coefficient, and transmission coefficient, Spectrum Analyzer is used to analyze the frequency spectrum of signals, identifying frequency. While Network Analyzer is primarily used to analyze the performance and characteristics of networks, such as measuring impedance, reflection coefficient, and transmission coefficient, Spectrum Analyzer is used to analyze the frequency spectrum of signals, identifying frequency. Network analyzers mostly measure S-parameters, which are a type of parameter that characterizes the electrical behavior of linear circuits, or more specifically, the input/output relationships of circuits between ports. Network analyzers can also measure Y-parameters, Z-parameters, and. Spectrum analyzers are frequency-domain instruments, showing power versus frequency. Most spectrum analyzers automate certain power versus frequency type measurements, like AM modulation depth or. A spectrum analyzer measures the magnitude of an input signal versus frequency within the full frequency range of the instrument. The primary use is to measure the power of the spectrum of known and unknown signals. At the end, I pointed to some application notes that explain how to use specific spectrum.