Lesson 7 – Executing the DAC Distortion Test
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7-3 Analyzing Spectral Data with the
Mixed-Signal Tool
The Mixed-Signal Tool supports the analysis of data in the
frequency domain by
• Coherent reconstruction
• Harmonics calculation
NOTE These are general processes for analyzing spectral data. The data
does not need to downloaded using coherent reconstruction, when
retrieving the results of the DAC Distortion test.
Coherent Reconstruction
Waveform data that shall be converted from time to frequency
domain by an FFT must have been sampled under coherent
conditions. Otherwise leakage will occur, which makes it
impossible to detect minor spectral components.
Coherence can be checked with the Mixed-Signal Tool. The tables
in the Upload Configuration window contain a checkbox labeled
C
OHERENT RECONSTRUCTION.
Coherent Reconstruction Checkboxes
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