Cirrus-logic CDB5374 Manuel d'utilisateur Page 45

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CDB5374
DS862DB1 45
3.4.1 Test Select
The Test Select control sets the type of analysis to be run on the collected data set.
Control Description
Time Domain Runs a min / max calculation on the collected data set and then plots sample data
value vs. sample number.
Histogram Runs a histogram calculation on the collected data set and then plots sample occur-
rence vs. sample value. Only valid for noise data since sine wave data varies over
too many codes to plot as a histogram.
Signal FFT Runs an FFT on the collected data set and then plots frequency magnitude vs. fre-
quency. Statistics are calculated using the largest frequency bin as a full-scale signal
reference.
Noise FFT Runs an FFT on the collected data set and then plots frequency magnitude vs. fre-
quency. Statistics are calculated using a simulated full-scale signal as a full-scale sig-
nal reference.
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