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- Tektronix Applications
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- Joined: December 2nd, 2008, 2:27 pm
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A Spectrum Analyzer is an instrument that primarily makes measurements of the spectral or frequency domain content of a signal - basically spectrum traces. It can also make a number of measurements such as Occupied Bandwidth, Channel Power, and many others, in addition to some Zero Span meaurements.
A Signal Analyzer builds upon the Spectrum Analyzer functionality by adding the ability to acquire the RF signal over time and perform a variety of measurements on the acquired signal, such as: Amplitude or Magnitude vs. time, Frequency Deviation vs. Time, Phase Deviation vs. Time, Spectrums vs. Time, IQ vs. Time, etc. In addition, it can be equipped to perform modulation analysis (such as constellation diagrams, EVM, symbol decode, etc.), analysis of standards specific RF signals such as WiFi, Bluetooth, 5G, etc., analysis of pulsed RF signals such as radar, and more.
Often times a Signal Analyzer is referred to as a Spectrum Analyzer, but usually not the other way around.
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