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Glossary
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National Instruments Corporation
G-5
G
gain
The factor by which a signal is amplified, sometimes expressed in decibels.
gain accuracy
A measure of deviation of the gain of an amplifier from the ideal gain.
gain error
Gauge Factor
For a given strain gauge, is the fractional resistance change relative to the
strain that caused the resistance change. Thus, Gauge Factor is a measure
of strain-gauge sensitivity.
GF
H
half bridge
A Wheatstone bridge consisting of two active strain gauges and two passive
fixed-valued resistors.
Hz
Hertz—Cycles per second of a periodic signal.
I
I/O
Input/Output—The transfer of data to/from a computer system involving
communications channels, operator interface devices, and/or data
acquisition and control interfaces.
ID
Identifier.
in.
Inch or inches.
input impedance
The measured resistance and capacitance between the input terminals of a
circuit.
instrumentation
amplifier
A very accurate differential amplifier with a high input impedance.