Campbell-scientific CR3000 Micrologger Instrukcja Użytkownika Pobierz pdf (Strona 472)

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101

Section 11. Glossary

472

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UserProgram

TheCRBasicprogramwrittenbytheCR3000userintheCRBasicEditor

ortheShortCutprogramgenerator.

USR:

AportionofCR3000memorydedicatedtothestorageofimageorother

files.

URI

uniformresourceidentifier

URL

uniformresourcelocater

variable

ApacketofCR3000memorygivenanalphanumericname,whichholds

apotentiallychangingnumberorstring.

Vac

Voltsalternatingcurrent.AlsoVAC.Mainsorgridpowerishigh‐level

Vac,usually110Vacor220Vacatafixedfrequencyof50Hzor60Hz.

High‐levelVacisusedasaprimarypowersourceforCampbellScientific

powersupplies.Donotconnecthigh‐levelVacdirectl

ytotheCR3000.

TheCR3000measuresvaryingfrequenciesoflow‐levelVacintherange

of±20Vac.

Vdc

Voltsdirectcurrent.AlsoVDC.TheCR3000operateswithanominal12‐

Vdcpowersupply.Itcansupplynominal12Vdc,regulated5Vdc,and

variableexcitationinthe±2.5Vdcrange.Itmeasuresanalogvoltagein

the±5.0‐Vdcrangeandpulsevoltageinthe±20‐Vdcrange.

Voltmeter

Aninexpensiveandreadilyavailabledeviceusefulintroubleshooting

dataacquisitionsystemfaults.

Volts

SIunitforelectricalpotential.

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