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关于使用ADC和modulation模块对调制信号解调(about the demodulation of FSK using DAQmx and modulation modular)

I have a PXI hardware toolkit.In the toolkit,these are PXI-4461 ,PXI-4495 and PXI-4495.I want to use 4461 which consist of two ADC channels and two DAC channels to receive FSK signal and demodulation the FSK signal using DAQmx and modulation modular.

My problem is when I use the program attached below,these are nothing demodulated out.I want to know how to get a right signal which is needed by MT FSK demodulation vi by the data which is outputed by DAQmx?

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