Campbell CR850 - Figure 83: Running-Average Frequency Response

Section 7. Installation
266
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Therecordedamplitudeforthisexampleshouldbeabout1/3ofthe
input‐signalamplitude.Aprogramwaswrittenwithtwostored
variables:Accel2andAccel2RA.Therawmeasurementwasstoredin
Accel2,whileAccel2RAwastheresultofperformingarunningaverage
ontheAccel2variable.Bothvalueswerestoredatarateof50
0Hz.
FigureRunning‐AverageSignalAttenuation
(p.267)showthetwovalues
plottedinasinglegraphtoillustratetheattenuation(therunning‐
averagevaluehastheloweramplitude).
Theresultantdelay(delayintime)=(Scanrate)(N‐1)/2=2ms(10‐1)/2=
9ms.Thisisabout1/3oftheinput‐signalperiod.
Figure 83: Running-average frequency response