6ContentsReducing Input Attenuation 44Decreasing the Resolution Bandwidth 47Using the Average Detector and Increased Sweep Time 50Trace Averaging 524 Improving Frequency Resolution and AccuracyUsing a Frequency Counter to Improve Frequency Resolution and Accuracy 565 Tracking Drifting SignalsMeasuring a Source Frequency Drift 58Tracking a Signal 616 Making Distortion MeasurementsIdentifying Analyzer Generated Distortion 64Third-Order Intermodulation Distortion 677 Measuring NoiseMeasuring Signal-to-Noise 72Measuring Noise Using the Noise Marker 74Measuring Noise-Like Signals Using Band/Interval Density Markers 78Measuring Noise-Like Signals Using the Channel Power Measurement 81Measuring Signal-to-Noise of a Modulated Carrier 83Improving Phase Noise Measurements by Subtracting Signal AnalyzerNoise 888 Making Time-Gated MeasurementsGenerating a Pulsed-RF FM Signal 94Signal source setup 94Analyzer setup 95Digitizing oscilloscope setup 97Connecting the Instruments to Make Time-Gated Measurements 99Gated LO Measurement 100Gated Video Measurement 104