Campbell-scientific CR800 and CR850 Measurement and Control Systems Instrukcja Użytkownika Pobierz pdf (Strona 441)

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101

Section 11. Glossary

441

resistor

Adevicethatprovidesaknownquantityofresistance.

resolution

Ameasureofthefinenessofameasurement.SeealsoAccuracy,

Precision,andResolution

(p.449).

ringline(Pin3)

Linepulledhighbyanexternaldeviceto"awaken"theCR800.

RingMemory

Amemoryconfigurationfordatatablesallowingtheoldestdatatobe

overwritten.Thisisthedefaultsettingfordatatables.

ringing

Oscillationofsensoroutput(voltageorcurrent)thatoccurswhen

sensorexcitationcausesparasiticcapacitancesandinductancesto

resonate.

RMS

Root‐meansquare,orquadraticmean.Ameasureofthemagnitudeof

waveorothervaryingquantitiesaroundzero.

RS‐232

RecommendedStandard232.Aloosestandarddefininghowtwo

computingdevicescancommunicatewitheachother.The

implementationofRS‐232inCampbellScientificdataloggerstoPC

communicationsisquiterigid,buttransparenttomostusers.

ImplementationofRS‐232inCampbellScientificdataloggertoRS‐232

smart‐sensorc

ommunicationsisquiteflexible.

samplerate

Therateatwhichmeasurementsaremade.Themeasurementsample

rateisprimarilyofinterestwhenconsideringtheeffectoftimeskew

(i.e.,howcloseintimeareaseriesofmeasurements).Themaximum

sampleratesaretheratesatwhichmeasurementsaremadewhen

initiatedbyasingleinstructionwithm

ultiplerepetitions.

scaninterval

ThetimeintervalbetweeninitiatingeachexecutionofagivenScan()of

aCRBasicprogram.IftheScan()Intervalisevenlydivisibleinto24hours

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