Glossary
PCI-6023E/6024E/6025E User Manual
G-2
©
National Instruments Corporation
A/D
analog-to-digital
ADC
analog-to-digital converter—an electronic device, often an integrated
circuit, that converts an analog voltage to a digital number
ADC resolution
the resolution of the ADC, which is measured in bits. An ADC with 16 bits
has a higher resolution, and thus a higher degree of accuracy, than a 12-bit
ADC.
AI
analog input
AIGATE
analog input gate signal
AIGND
analog input ground signal
AISENSE
analog input sense signal
alias
a false lower frequency component that appears in sampled data acquired
at too low a sampling rate
amplification
a type of signal conditioning that improves accuracy in the resulting
digitized signal and reduces noise
ANSI
American National Standards Institute
AO
analog output
AOGND
analog output ground signal
ASIC
Application-Specific Integrated Circuit—a proprietary semiconductor
component designed and manufactured to perform a set of specific
functions for a specific customer
asynchronous
(1) hardware—a property of an event that occurs at an arbitrary time,
without synchronization to a reference clock (2) software—a property of a
function that begins an operation and returns prior to the completion or
termination of the operation
attenuate
to decrease the amplitude of a signal
B
bandwidth
the range of frequencies present in a signal, or the range of frequencies to
which a measuring device can respond
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