0938 Use of spectrum analyzer | || || Use of spectrum analyzer || 1. What is spectrum analyzer || A graphical tester that analyzes signals in the frequency domain. Graphically display the distribution of signal amplitude by frequency, that is, || The X-axis represents frequency and the Y-axis represents signal amplitude. || 2. Principle: || Use narrowband bandpass filter to select the signal. || 3. Main functions: || Display the spectrum, amplitude and frequency of the measured signal. It can be displayed in full view or the bandwidth can be selected for testing. || 4. Measurement mechanism: || 1. Compare the measured signal with the reference frequency and reference level in the instrument. Because the essence of many measurements || is level testing, such as carrier level, A/V, frequency response, C/N, CSO, CTB, HM, CM and || average power of digital channels. || 2. Waveform analysis: Through the 107 option and the corresponding analysis software, analyze the line || waveform of the TV to test the video indicators. ……
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