Delphin ProfiMessage - 9.2.1.2 Continuous recording

ProfiMessage
Theabovegraphicrepresentsthegenerationofmeasurementdatainrelationto
commontriggers.Thetransmissionofthemeasurementdataistimedelayed.
Thetimingoftheentirecycledependsprimarilyontheuserconfiguration.The
mainfactorshereareasfollows:
l Recordingtime
Determinedbythequotientofthe“numberofsamples”andthe“sampling
frequency.”Example:1024/2560Hz=400ms.
l Analysistime
Determinedbythenumberofactiveanaloguechannelsandthecomputation
timerequiredfordigitalfiltering,FFTanalysis,characteristicvaluecom-
putationandmonitoring.Example:approx.10ms/channelfora1024-point
FFT.
l Measurementdatatransmissiontime
Determinedbythenumberofselected'active'channels“analogueinput”and
“FFT/spectrum”.Thetransmissionrateofapproximately10000meas-
urementvalues/sor100msfor1024measurementvalues.
9.2.1.2 Continuousrecording
ThetheI/Omodulerunscontinuouslyinthisoperatingmode.Recording,eval-
uationandmeasurementdatatransmissiontakeplacebyDSPcontinuouslyand
simultaneously.
Themaximumsamplingfrequencydependsonthevolumeofmeasurementdata
thatistobesimultaneouslytransmitted.Thesamplingfrequencyistypically1kHz
parallelfor8analoguechannelswithsimultaneoustransmissionoftimesignals
andsomecharacteristicvalues.
243
Delphin Technology AG
Dezember 2015
ProfiMessage Manual