Glossary
© National Instruments Corporation G-11 M Series User Manual
I
OH
Current, output high.
I
OL
Current, output low.
IRQ See interrupt, interrupt request line.
K
kHz Kilohertz—A unit of frequency; 1 kHz = 10
3
= 1,000 Hz.
kS 1,000 samples.
L
LabVIEW A graphical programming language.
LED Light-Emitting Diode—A semiconductor light source.
lowpass filter A filter that passes signals below a cutoff frequency while blocking signals
above that frequency.
LSB Least Significant Bit.
M
m Meter.
M Series An architecture for instrumentation-class, multichannel data acquisition
devices based on the earlier E Series architecture with added new features.
mass termination USB or DAQPad devices where all signals flow through 68-pin connectors,
as opposed to screw terminal or BNC variants.
measurement The quantitative determination of a physical characteristic. In practice,
measurement is the conversion of a physical quantity or observation to a
domain where a human being or computer can determine the value.
measurement device DAQ devices, such as the M Series multifunction I/O (MIO) devices, SCXI
signal conditioning modules, and switch modules.
MHz Megahertz—A unit of frequency; 1 MHz = 10
6
Hz = 1,000,000 Hz.
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