Cirrus-logic CDB5378 Manual do Utilizador descarregar pdf (Página 48)

CDB5378

48 DS639DB4

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 magnitude 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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Cirrus-logic CDB5378 Manual do Utilizador Página 48