Campbell-scientific CR800 and CR850 Measurement and Control Systems Instrukcja Użytkownika Strona 446

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Section 11. Glossary
446
terminalemulator
Acommandlineshellthatfacilitatestheissuanceoflowlevel
commandstoadataloggerorsomeothercompatibledevice.A
terminalemulatorisavailableinmostdataloggersupportsoftware
availablefromCampbellScientific.
thermistor
Athermistorisaresistiveelementwhosechangeinresistancewith
temperatureiswide,stable,andwellcharacterized.Itcanbeusedasa
devicetomeasuretemperature.Theoutputofathermistorisusually
nonlinear,someasurementrequireslinearization,usuallybymeansof
theSteinhartHartoranotherpoly
nomialequation.CampbellScientific
thermistors,models107,108,and109,arelinearizedbySteinhartHart
asimplementedintheTherm107(),Therm108(),andTherm109()
instructions.
throughput
Thethroughputrateistherateatwhichameasurementcanbetaken,
scaledtoengineeringunits,andthereadingstoredinadatatable.The
CR800hastheabilitytoscansensorsatarateexceedingthethroughput
rate.Theprimaryfactoraffectingthroughputrateistheamountof
processingspecifiedbytheus
er.Insequentialmodeoperation,all
processingcalledforbyaninstructionmustbecompletedbefore
movingontothenextinstruction.
TTL
Transistortransistorlogic.Aserialprotocolusing0Vdcand5Vdcas
logicsignallevels.
TLS
Transportlayersecurity.AnInternetcommunicationssecurityprotocol.
toggle
Toreversethecurrentpowerstate.
UINT2
Datatypeusedforefficientstorageoftotalizedpulsecounts,port
status(statusof16portsstoredinonevariable,forexample)orinteger
valuesthatstorebinaryflags.
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