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Spectrum Analyzer

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. Given the challenge of characterizing the behavior of today’s RF devices, it is necessary to understand how frequency, amplitude, and modulation parameters behave over short and long intervals of time.
Spectrum analyzers are used for many measurements including Frequency Response, Noise and Distortion characteristics of all kinds of radio-frequency circuitry, Occupied Bandwidth and Interference Sources in Telecommunications, Basic Pre-Compliance Testing for EMC Testing. Other measurement techniques involve setting up the spectrum analyzer to test harmonics of audio signals by musicians and audio engineers, using reflective or refractive techniques to separate out the wavelengths of light with optical spectrum analyzers, and vibration amplitudes at various component frequencies among many others