1. Add the following controls and indicators, as shown in the following figure:
    • Decimation—Specifies how much decimation is performed on the analog input signal. This control determines the maximum bandwidth of your signal.
    • NCO frequency—Specifies the center frequency for the analog input waveform.
    • Frequency—Specifies the frequency at which to generate a sine tone. This tone can serve as a test signal for the simple spectrum analyzer.
    Figure 18. Host VI Block Diagram With Controls and Indicators


  2. Divide the decimation rate value by 100M, which is the default Sample Clock rate of the ADCs, and wire the output to the dt input of the Build Waveform VI.