National Instruments NI 6014 User Manual

Page 92

Glossary

G-3

CMRR

common-mode rejection ratio—a measure of an instrument’s ability to
reject interference from a common-mode signal, usually expressed in
decibels (dB)

common-mode signal

any voltage present at the instrumentation amplifier inputs with respect to
amplifier ground

CONVERT*

convert signal

counter/timer

a circuit that counts external pulses or clock pulses (timing)

D/A

digital-to-analog

DAC

digital-to-analog converter—an electronic device, often an integrated
circuit, that converts a digital number into a corresponding analog voltage
or current

DAC0OUT

analog channel 0 output signal

DAC1OUT

analog channel 1 output signal

DAQ

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

decibel—the unit for expressing a logarithmic measure of the ratio of
two signal levels: dB = 20log10 V1/V2, for signals in volts

direct current

DGND

digital ground signal

DIFF

differential mode

differential input

an analog input consisting of two terminals, both of which are isolated from
computer ground, whose difference is measured

DIO

digital input/output

This manual is related to the following products:

NI 6013