Campbell-scientific CR800 and CR850 Measurement and Control Systems Uživatelský manuál stáhnout pdf (Strana 439)

100

101

Section 11. Glossary

439

parameter

Argumentorparameter?Thesetermsarefrequentlyinterchanged,but

haveausefuldistinction.Aparameterispartofaprocedure(or

command)definition;anargumentispartofaprocedurecall(or

commandexecution).Anargumentisplaceinaparameter.For

example,intheCRBasiccommandBattery(dest),destisaparameter

andsodefin

eswhatistobeputinitsplace.IfavariablenamedBattVis

meanttoholdtheresultofthebatterymeasurementmadeby

Battery(),BattVistheargumentplacedindest.Example:

Battery(BattV)

BattVistheargument.

periodaverage

Ameasurementtechniqueutilizingahigh‐frequencydigitalclockto

measuretimedifferencesbetweensignaltransitions.Sensorscommonly

measuredwithperiodaverageincludevibrating‐wiretransducersand

water‐contentreflectometers.

peripheral

Anydevicedesignedforusewith,andrequiring,theCR800(oranother

CampbellScientificdatalogger)tooperate.

Ping

Asoftwareutilitythatattemptstocontactanotherspecificdeviceina

network.

PoissonRatio

Aratiousedinstrainmeasurementsequaltotransversestraindivided

byextensionstrain.v=‐(ε

trans

/ε

axial

).

precision

Ameasureoftherepeatabilityofameasurement.Alsoseetheappendix

Accuracy,Precision,andResolution

(p.449).

PreserveVariables

PreserveVariablesinstructionprotectsPublicvariablesfrombeing

erasedwhenaprogramisrecompiled.

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