Campbell-scientific CR1000 Measurement and Control System Manuel d'utilisateur télécharger pdf (Page 461)

Section 11. Glossary

461

outputinterval

Thetimeintervalbetweeninitiationsofaparticulardata‐tablerecord.

outputprocessinginstructions

Processdatavaluesandgenerateoutputarrays.Examplesofoutput

processinginstructionsincludeTotalize(),Maximize(),Minimize(),

Average().Thedatasourcesfortheseinstructionsarevaluesin

variables.Theresultsofintermediatecalculationsarestoredinmemory

toawaittheoutputtrigger.Theultimatedestinationofdatage

nerated

byoutputprocessinginstructionsisusuallyfinalstorage,butitmaybe

outputtovariablesforfurtherprocessing.Thetransferofprocessed

summariestofinalstoragetakesplacewhentheoutputtriggerissetto

True.

PakBus

Aproprietarytelecommunicationsprotocolsimilarinconceptto

internetprotocol(IP).IthasbeendevelopedbyCampbellScientificto

facilitatecommunicationsbetweenCampbellScientificinstrumentation.

PakBusGraphsoftware

ShowstherelationshipofvariousnodesinaPakBusnetwork,and

allowsforadjustmentofmanysettingsineachnode.APakBusnodeis

typicallyadatalogger,aPC,oratelecommunicationsdevice.

parameter

Argumentorparameter?Thesetermsarefrequentlyinterchanged,but

haveausefuldistinction.Aparameterispartofaprocedure(or

command)definition;anargumentispartofaprocedurecall(or

commandexecution).Anargumentisplaceinaparameter.For

example,intheCRBasiccommandBattery(dest),destisaparameter

andsodefin

eswhatistobeputinitsplace.IfavariablenamedBattVis

meanttoholdtheresultofthebatterymeasurementmadeby

Battery(),BattVistheargumentplacedindest.Example:

Battery(BattV)

BattVistheargument.

periodaverage

Ameasurementtechniqueutilizingahigh‐frequencydigitalclockto

measuretimedifferencesbetweensignaltransitions.Sensorscommonly

measuredwithperiodaverageincludevibrating‐wiretransducersand

water‐contentreflectometers.

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Campbell-scientific CR1000 Measurement and Control System Manuel d'utilisateur Page 461