National Instruments AT-MIO-16X - Manual (Page 295)

Glossary
AT-MIO-16X User Manual G-12 © National Instruments Corporation
sine wave added in a 4:1 amplitude ratio.
DIN—A 250 Hz sine wave and an 8 kHz
sine wave added in a 4:1 amplitude ratio.
CCIF—A 14 kHz sine wave and a 15 kHz
sine wave added in a 1:1 amplitude ratio.
immediate digital I/O a type of digital acquisition/generation where LabVIEW updates the
digital lines or port states immediately or returns the digital value of an
input line. Also called nonlatched digital I/O.
in. inches
Industrial Device standardized digital communications networks used in industrial
Networks automation applications; they often replace vendor-proprietary
networks so that devices from different vendors can communicate in
control systems
INL integral nonlinearity—a measure in LSB of the worst-case deviation
from the ideal A/D or D/A transfer characteristic of the analog I/O
circuitry
input bias current the current that flows into the inputs of a circuit
input impedance the measured resistance and capacitance between the input terminals
of a circuit
input offset current the difference in the input bias currents of the two inputs of an
instrumentation amplifier
instrument driver a set of high-level software functions that controls a specific GPIB,
VXI, or RS-232 programmable instrument or a specific plug-in DAQ
board. Instrument drivers are available in several forms, ranging from a
function callable language to a virtual instrument (VI) in LabVIEW.
instrumentation a circuit whose output voltage with respect to ground is proportional to
amplifier the difference between the voltages at its two inputs
integral control a control action that eliminates the offset inherent in proportional
control
integrating ADC an ADC whose output code represents the average value of the input
voltage over a given time interval
interrupt a computer signal indicating that the CPU should suspend its current
task to service a designated activity