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Glossary
NI PXI-562x User Manual
G-4
©
National Instruments Corporation
drivers
software that controls a specific hardware instrument
DSP
digital signal processor
E
EEPROM
electrically erasable programmable read-only memory—ROM that can be
erased with an electrical signal and reprogrammed
F
FFT
fast Fourier transform
filtering
a type of signal conditioning that allows you to remove unwanted signals or
frequency components from the signal you are trying to measure
G
gain
the factor by which a signal is amplified, sometimes expressed in decibels
H
hardware
the physical components of a computer system, such as the circuit boards,
plug-in boards, chassis, enclosures, peripherals, cables, and so on
harmonics
multiples of the fundamental frequency of a signal
Hz
hertz—the number of scans read or updates written per second
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
impedance
resistance
in.
inch or inches
inductance
the relationship of induced voltage to current