What is a spectrum analyzer? What are the specific categories?

Spectrum analyzer is an instrument to study the spectral structure of electrical signals, used for signal distortion, modulation, spectral purity, frequency stability and cross-modulation distortion and other signal parameter measurements, which can be used to measure amplifiers and filters, and other circuit systems, some of the parameters, is a multi-purpose electronic measurement instruments. It can also be called frequency domain oscilloscope, tracking oscilloscope, analyzing oscilloscope, harmonic analyzer, frequency characteristics analyzer or Fourier analyzer. Modern spectrum analyzers can be analog or digital display of the analysis results, can analyze the very low frequency below 1 Hz to the sub-millimeter band of the entire radio frequency band of electrical signals. Instrument internal digital circuitry and microprocessor, with storage and computing functions; configuration of standard interfaces, it is easy to form an automatic test system.

Spectrum analyzer is divided into two categories of real-time analysis and frequency sweep. The former can be measured in the signal occurred in the actual time to obtain all the spectral information needed and analyze and display the analysis results; the latter need to be repeated through a number of sampling process to complete the analysis of information. Real-time spectrum analyzer is mainly used for non-repeatable, short duration of the signal analysis. Non-real-time spectrum analyzer is mainly used from the acoustic frequency until the sub-millimeter band of a section of the continuous radio frequency signal and the analysis of periodic signals.

Beijing Fortune Hengchuang Technology Co., Ltd WH/HS5720 dedicated spectrum analyzer working principle using digital detector technology, replacing some of the traditional digital sound level meter, stability and reliability greatly improved. Integration of fractional octave filter. Built-in 1/1, 1/3, 1/6 octave filter, you can manually select the filter center frequency. Large LCD display, clear and intuitive display. Mechanical analog meter can reflect the test results at the same time. With data and computer connection and other functions.