What is a "Spectrum Analysis"? The Most Authoritative Explanation.
What is spectrum analysis?
Spectrum analysis uncovers sources of interference by displaying the spectral components independently. The time domain still provides useful information, such as the pulse rise and fall times of a signal, but the frequency domain allows us to determine the harmonic content of a signal, such as out-of-band emissions and distortion.What are the different types of spectral analysis?
Spectrum analyzers measure the magnitude of an input versus signal frequency. Vector signal analyzers measure the magnitude and phase of an input signal at a single frequency. Today’s signal analyzers combine functionality of the earlier evolutions of spectrum analyzers, such as analog, vector, and FFT (fast Fourier transform) measurements.What are the benefits of spectral analysis?
Spectral analysis enables one to observe and trend energy changes in gear rotating and meshing frequencies and their harmonics, e.g., due to a uniform wear, and their side-bands to determine, e.g., if distributed faults such as run-out are present.What is a spectrum analyzer?
Spectrum analyzers measure the magnitude of an input versus signal frequency. Vector signal analyzers measure the magnitude and phase of an input signal at a single frequency. Today’s signal analyzers combine functionality of the earlier evolutions of spectrum analyzers, such as analog, vector, and FFT (fast Fourier transform) measurements.
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