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CMR
CMRR
common-mode signal
counter/timer
D
D/A
D GND
DAC
DAQ
DAQ Assistant
DAQ-STC
dB
DC
differential input
DIO
dithering
© National Instruments Corporation
Common-mode rejection.
Common-mode rejection ratio—A measure of an instrument's ability to
reject interference from a common-mode signal, usually expressed in
decibels (dB).
Any voltage present at the instrumentation amplifier inputs with respect to
amplifier ground.
A circuit that counts external pulses or clock pulses (timing).
Digital-to-analog.
Digital ground signal.
Digital-to-analog converter—An electronic device, often an integrated
circuit, that converts a digital number into a corresponding analog voltage
or current.
Data acquisition—(1) Collecting and measuring electrical signals from
sensors, transducers, and test probes or fixtures and inputting them to a
computer for processing; (2) collecting and measuring the same kinds of
electrical signals with A/D and/or DIO devices plugged into a computer,
and possibly generating control signals with D/A and/or DIO devices in the
same computer.
A configuration assistant with which you define and configure your DAQ
operation.
Data acquisition system timing controller chip.
Decibel—The unit for expressing a logarithmic measure of the ratio of
two signal levels: dB = 20log
Direct current.
An analog input consisting of two terminals, both of which are isolated
from computer ground, the difference of which is measured.
Digital input/output.
The addition of Gaussian noise to an analog input signal.
(V1/V2), for signals in volts.
10
G-3
Glossary
NI PXI-4224 User Manual
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