Campbell CR850 - Page 446

Section 11. Glossary
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terminalemulator
Acommand‐lineshellthatfacilitatestheissuanceoflow‐level
commandstoadataloggerorsomeothercompatibledevice.A
terminalemulatorisavailableinmostdataloggersupportsoftware
availablefromCampbellScientific.
thermistor
Athermistorisaresistiveelementwhosechangeinresistancewith
temperatureiswide,stable,andwell‐characterized.Itcanbeusedasa
devicetomeasuretemperature.Theoutputofathermistorisusually
non‐linear,someasurementrequireslinearization,usuallybymeansof
theSteinhart‐Hartoranotherpoly
nomialequation.CampbellScientific
thermistors,models107,108,and109,arelinearizedbySteinhart‐Hart
asimplementedintheTherm107(),Therm108(),andTherm109()
instructions.
throughput
Thethroughputrateistherateatwhichameasurementcanbetaken,
scaledtoengineeringunits,andthereadingstoredinadatatable.The
CR800hastheabilitytoscansensorsatarateexceedingthethroughput
rate.Theprimaryfactoraffectingthroughputrateistheamountof
processingspecifiedbytheus
er.Insequential‐modeoperation,all
processingcalledforbyaninstructionmustbecompletedbefore
movingontothenextinstruction.
TTL
Transistor‐transistorlogic.Aserialprotocolusing0Vdcand5Vdcas
logicsignallevels.
TLS
Transportlayersecurity.AnInternetcommunicationssecurityprotocol.
toggle
Toreversethecurrentpowerstate.
UINT2
Datatypeusedforefficientstorageoftotalizedpulsecounts,port
status(statusof16portsstoredinonevariable,forexample)orinteger
valuesthatstorebinaryflags.