Based on modulation domain analysis, a frequency modulation parameter testing method is proposed.
基于调制域分析，设计了电子产品频率调制参数测试方法。
Normalization method of ultrasonic testing signal, the advantages and disadvantages of time domain, frequency domain were discussed.
探讨了超声波检测信号归一化处理的方法，以及时域信号归一化和频域信号归一化的优缺点。
This paper indicates the normal testing methods of time domain frequency stability, and focal points out the testing methods of time domain frequency stability with modulation domain analysis.
介绍了时域频率稳定性常用的测量方法，并重点介绍了利用调制域分析仪实现时域频率稳定性的测量方法。
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