Troubleshooting Tips - Analog Devices AD9653 User Manual

1. Adjust the amplitude of the input signal so that the fundamental is at the desired level. Examine
the Fund Power reading in the left panel of the VisualAnalog Graph - AD9253 FFT window
(see Figure 12).
Window of VisualAnalog
2. Repeat this procedure for Channel B, Channel C, and Channel D.
3. Click the disk icon within the VisualAnalog Graph - AD9253 FFT window to save the
performance plot data as a .csv formatted file. See Figure 13 for an example.

Troubleshooting Tips

If the FFT plot appears abnormal, do the following:
If you see an abnormal noise floor, go to the ADCBase0 tab of the SPIController window and
toggle the Chip Power Mode in MODES(8) from Chip Run to Reset and back.
If you see a normal noise floor when you disconnect the signal generator from the analog input, be
Figure 13. Typical FFT,
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Figure 12. Graph
AD9253