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 parameters of the measurement, can be used to measure amplifiers and filters and other circuit systems, some 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. If the instrument internal digital circuits and microprocessors, with storage and computing functions; configuration of standard interfaces, it is easy to form an automatic test system.
Product classification:
Spectrum analyzer is divided into two categories of real-time analysis and frequency sweeping. The former can be measured in the actual time of the signal to obtain all the spectral information needed and analyze and display the analysis results; the latter need to be repeated through the sampling process to complete the information analysis. 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 RF signal and the analysis of periodic signals.
Working Principle:
Spectrum analyzer architecture is like a time-domain oscilloscope, the panel is built with many function control buttons, as the adjustment and control of the system functions, real-time spectrum analyzers (Real-Time Spectrum Analyzer) and sweep-tuned spectrum analyzer (Sweep-Tuned Spectrum Analyzer). Analyzer.) Real-Time Spectrum Analyzer's function is to display the amplitude of the signal in the frequency domain at the same instant, and its working principle is to have corresponding filters and detectors (Detector) for different frequency signals, and then through the synchronized multi-task scanner to send the signal to the CRT screen, and the advantage is that it can display the instantaneous response of the Periodic Random Waves (PeriodicRandom Waves), and the disadvantage is that it is expensive and the performance is very high. The advantage is that it can display the instantaneous response of PeriodicRandom Waves. The disadvantages are that it is expensive and the performance is limited by the bandwidth range, the number of filters and the maximum multitasking time.
Beijing Million Electronic Technology Center is a large instrumentation manufacturer and distributor, the main areas of operation include: gas detector, metal detector, environmental protection equipment, health care, laboratory equipment, chemical instrumentation, agricultural equipment, mechanical and electrical equipment, fire and security equipment, power communication equipment, etc. Almost all industries. The company's products spectrum analyzer using 8MHz measurement bandwidth, real-time high-speed DSP digital processing technology, 30Hz ~ 8MHz digital IF bandwidth analysis, real-time spectrum analyzer can be a fast one-time seamless interception and storage of a section of RF carrier signals, and then real-time analysis of the intercepted signals and calculations, with a synchronous analysis function in the time-dependent frequency domain, time domain, phase domain and modulation domain.