1. Place a Split Number VI on the block diagram to the right of the Invoke Method Node you placed and wired in step 9 in the preceding section.
    The Split Number VI is located on the Functions palette under Programming » Numeric » Data Manipulation.
  2. Wire the Data output from the FIFO.Read method to the input of the Split Number VI.
  3. Place and wire two To Word Integer functions on the block diagram to convert the outputs of the Split Number VI to I16 format.
    The To Word Integer function is located on the Functions palette under Programming » Numeric » Conversion.
  4. Place and wire a Real-Imaginary to Complex Number VI on the block diagram.
    The Real-Imaginary to Complex Number VI is located on the Functions palette under Programming » Numeric » Complex.
  5. Place and wire a Build Waveform VI on the block diagram.
    The Build Waveform VI is located on the Functions palette under Programming » Waveform.
  6. Place and wire an FFT Power Spectrum VI and PSD VI on the block diagram.
    The FFT Power Spectrum VI is located on the Functions palette under Signal Processing » Waveform Measurements.
  7. Wire a TRUE constant to the dB On parameter of the FFT Power Spectrum VI.
  8. Place a Waveform Graph indicator, located on the Waveform palette, on the front panel.
The VIs you placed and wired in this section are shown in the following figure. The code in this figure should be wired to the code shown in the preceding section.
Figure 17. Analyzing the Data