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Glossary
AT-MIO-16X User Manual G-2
©
National Instruments Corporation
AC coupled allowing the transmission of AC signals while blocking DC signals
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.
address character code that identifies a specific location (or series of locations)
in memory
alias a false lower frequency component that appears in sampled data
acquired at too low a sampling rate
ALU arithmetic logic unit—the element(s) in a processing system that
perform(s) the mathematical functions such as addition, subtraction,
multiplication, division, inversion, AND, OR, NAND, and NOR
AMD Advanced Micro Devices
amplification a type of signal conditioning that improves accuracy in the resulting
digitized signal and reduces noise
amplitude flatness a measure of how close to constant the gain of a circuit remains over a
range of frequencies
ANSI American National Standards Institute
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
attenuation ratio the factor by which a signal’s amplitude is decreased
AWG American Wire Gauge