National Instruments BNC -2140 User Manual
Page 29
Glossary
G-2
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National Instruments Corporation
ACH
analog input channel signal
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
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
amplitude flatness
a measure of how close to constant the gain of a circuit remains over a range
of frequencies
AOGND
analog output ground signal
attenuate
to decrease the amplitude of a signal
attenuation ratio
the factor by which a signal’s amplitude is decreased
B
b
bit—one binary digit, either 0 or 1
B
byte—eight related bits of data, an eight-bit binary number. Also used to
denote the amount of memory required to store one byte of data.
bandwidth
the range of frequencies present in a signal, or the range of frequencies to
which a measuring device can respond
bipolar
a signal range that includes both positive and negative values (for example,
–5 V to +5 V)
BNC
a type of coaxial signal connector