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Calibration Report
A record of shifts or calibration constant changes that have occurred during calibration.
Calibrator
A device that supplies outputs with a known uncertainty for use in testing the cury of
measurement devices or other sources.
Charterization
A calibration process that produces a calibration constant or known error for use in
correcting the output or reading of an instrument or standard.
Common Mode Noise
An undesired signal that exists between a device's terminals and ground. Common mode
noise is at the same potential on both terminals of a device. Also see "normal mode
noise".
Compliance Voltage
The maximum voltage that a constant-current source can supply.
Confidence Level
A percentage indicating certainty or assurance that an associated condition is true.
Control Chart
A chart devised to monitor one or more processes in order to detect the excessive
deviation from a desired value of a component or process.
Crest Ftor
The ratio of the peak voltage to the RMS voltage of a waveform (with the DC component
removed). Also see RMS.
DAC (Digital-to-Analog Converter)
A device or circuit that converts a digital waveform to an analog voltage.
Derived Units
Units in the SI system that are derived from base units. Volts, ohms, and watts are
derived from amperes and other base and derived units.
Distribution Function
The expression of a relationship between the values and the corresponding frequencies of
a variable.
Drift
Gradual change in a value over time.
Error
Deviation from correct value. The different types of error defined in this glossary are
floor, gain, offset, linearity, random, scale, systematic, transfer, and zero.
Glossary of AC-DC Transfer Related Terms
Appendices
A
A-3
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