CDB5378 Datasheet, PDF (46/72 Pages) Cirrus Logic – Single-channel Seismic Evaluation System

CDB5378
3.4.1 Test Select
The Test Select control sets the type of analysis to be run on the collected data set.
Control
Time Domain
Histogram
Signal FFT
Noise FFT
Phase
Description
Runs a min / max calculation on the collected data set and then plots sample data
value vs. sample number.
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.
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.
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.
Runs an FFT on the collected data set and then plots phase vs. frequency. Limited
usefulness for real collected data since noise has random phase.
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DS639DB3