Campbell-scientific CR3000 Micrologger Manuale Utente Scaricare il pdf (Pagina 467)

100

101

Section 11. Glossary

467

Thisistheprinciplebehindthermocoupletemperaturemeasurement.It

alsocausessmall,correctablevoltageoffsetsinCR3000measurement

circuitry.

Semaphore(MeasurementSemaphore)

Insequentialmode,whenthemainscanexecutes,itlockstheresources

associatedwithmeasurements,i.e.,itacquiresthemeasurement

semaphore.Thisisatthescanlevel,soallsubscanswithinthescan

(whethertheymakemeasurementsornot),willlockoutmeasurements

fromslowsequences(includingthesy

stembackgroundcalibration).

Lockingmeasurementresourcesatthescanlevelgivesnon‐interrupted

measurementexecutionofthemainscan.

Send

TheSendbuttonindataloggersupportsoftware

(p.76).TheSend

commandsendsaCRBasicprogram,oranoperatingsystem,toa

CR3000.

serial

Aloosetermdenotingoutputoradevicethatoutputsanelectronic

seriesofalphanumericcharacters.

ShortCutsoftware

ACRBasicprogramgeneratorsuitableformanyCR3000applications.

KnowledgeofCRBasicisnotrequired.ShortCutisavailableatno

chargeatwww.campbellsci.com.

SI(SystèmeInternationale)

TheInternationalSystemofUnits.

signature

Anumberwhichisafunctionofthedataandthesequenceofdatain

memory.Itisderivedusinganalgorithmwhichassuresa99.998%

probabilitythatifeitherthedataorthedatasequencechanges,the

signaturechanges.

single‐ended

Denotesasensorormeasurementterminalwhereintheanalogvoltage

signaliscarriedonasinglelead,whichismeasuredwithrespectto

ground.

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Campbell-scientific CR3000 Micrologger Manuale Utente Pagina 467

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