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当我的图表遇到一个相当奇怪的问题时,我正在努力理解调制和解调。似乎我的调制信号的频谱是按时间显示的,而我的信号是按频率显示的。我在设置中做错了什么吗?谢谢!
看起来像是Spectrum of Modulated Signal在频域中,但 X 轴只是 FFT 中非冗余点的数量,并未缩放到归一化频率。
Spectrum of Modulated Signal
检查Spectral Measurements附加的 VISpectrum of Modulated Signal并调整设置以使其达到标准化频率。您可以将 X 轴标签更改为 readFrequency而不是Time,但这是装饰性的(并且正确)。
Spectral Measurements
Frequency
Time