Campbell-scientific CR1000 Measurement and Control System Manual do Utilizador descarregar pdf (Página 460)

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Section 11. Glossary

460



Null‐modem

Adevice,usuallyamulti‐conductorcable,whichconvertsanRS‐232

portfromDCEtoDTEorfromDTEtoDCE.

offset

aterm,oftenaparameterinaCRBasicmeasurementinstruction,to

designatethey‐intercept,shiftingfactor,orzeroingfactorinalinear

function.Forexample,whenconverting°Cto°F,theequationis°F=

°C*1.8+32.Thefactor32istheoffset.

Ohm

Theunitofresistance.SymbolistheGreekletterOmega(Ω).1.0Ω

equalstheratioof1.0Voltdividedby1.0Amp.

Ohm'sLaw

Describestherelationshipofcurrentandresistancetovoltage.Voltage

equalstheproductofcurrentandresistance(V=I*R).

on‐linedatatransfer

Routinetransferofdatatoaperipherallefton‐site.Transferis

controlledbytheprogramenteredinthedatalogger.

operatingsystem

Theoperatingsystem(alsoknownas"firmware")isasetofinstructions

thatcontrolsthebasicfunctionsoftheCR1000andenablestheuseof

userwrittenCRBasicprograms.Theoperatingsystemispreloadedinto

theCR1000atthefactorybutcanbere‐loadedorupgradedbythe

1000userusingDeviceConfigurationUtility

(p.92)software.Themost

recentCR1000operatingsystemfileisavailableat

www.campbellsci.com

.

output

Alooselyappliedterm.Denotesa)theinformationcarriergeneratedby

anelectronicsensor,b)thetransferofdatafromvariablestorageto

finalstorage,orc)thetransferofpowerfromtheCR1000ora

peripheraltoanotherdevice.

outputarray

Astringofdatavaluesoutputtofinalstorage.Outputoccurswhenthe

datatableoutputtriggeristrue.

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