National Instruments NI 5620 用户手册
Glossary
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
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
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
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
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