Guide to Spectrum and Signal Analysis

Guide to Spectrum and Signal Analysis
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Guide to Spectrum and Signal Analysis

  • 30 | Guide to Spectrum and Signal AnalysisThe spectrum analyzer can also be used to monitor FM transmitters (for example, broadcast or communications stations) for occupied bandwidth. Here the statistical nature of the modulation must be considered. The signal must be observed long enough to make capturing peak frequency deviation probable. The MAXHOLD capability, available on spectrum analyzers with digitized traces, is then used to acquire the signal. To better keep track of what is happening, you can often take advantage of the fact that most analyzers of this type have two or more trace memories.Select the MAX HOLD mode for one trace while the other trace is live. See Figure 35.Figure 35