23 Jan '15, 10pm

Fundamentals of Spectrum Analysis

Fundamentals of Spectrum Analysis

Frequency range: Frequency range specifies the range of frequencies over which the analyzer will operate. It is important to find a spectrum analyzer that will cover the fundamental frequencies of your application, but also harmonics or spurious signals on the high end, or baseband, and IF on the low end. Frequency accuracy: Frequency accuracy is often labeled as “frequency readout accuracy” and is usually specified as the sum of several sources of errors, including frequency-reference uncertainty, span error, and RBW center-frequency error. Virtually every modern spectrum analyzer uses synthesized local oscillators, which are generally accurate to within a few hundred Hertz. Amplitude accuracy: Uncertainty in display fidelity and frequency response has a direct effect on an analyzer’s amplitude accuracy. The further a signal is from the reference level, the more the displ...

Full article: http://electronicdesign.com/test-amp-measurement/fundamen...

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