Delphin ProfiMessage - 9.2.5.10 “Rotation speed”

ProfiMessage
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9.2.5.10 “Rotationspeed”
TheDSPdetermines(findsandcounts)thenumberofsignalperiodsinthetime
signal.Fromthis,theDSPdeterminesthesignalfrequency(f=1/T)orrotation
speed(n=60*f).Edgeandthresholdvaluescanbeset.
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Thisfrequencymeasurementhasupperandlowerfrequencylimits–frequencies
outsidethisrangecannotbeclearlydetermined(i.e.haveinsufficientaccuracy).
Thefollowingtableprovidesanoverviewasanexample:
Sample rate
fs
Number of samples
ns
Lower limit Upper limit
10240Hz 2048 10Hz 1024Hz
2560Hz 2048 22.5Hz 256Hz
512Hz 2048 0,5Hz 51Hz
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Delphin Technology AG
Dezember 2015
ProfiMessage Manual