National Instruments USB-621 Series User Manual page 187

Glossary
M
m
M Series
measurement
MIO
module
monotonicity
multichannel
multifunction DAQ
multiplex
mux
NI USB-621x User Manual
Meter.
An architecture for instrumentation-class, multichannel data acquisition
devices based on the earlier E Series architecture with added new features.
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.
Multifunction I/O—DAQ module. Designates a family of data acquisition
products that have multiple analog input channels, digital I/O channels,
timing, and optionally, analog output channels. An MIO product can be
considered a miniature mixed signal tester, due to its broad range of signal
types and flexibility. Also known as multifunction DAQ.
A board assembly and its associated mechanical parts, front panel, optional
shields, and so on. A module contains everything required to occupy one or
more slots in a mainframe. SCXI and PXI devices are modules.
A characteristic of a DAC in which the analog output always increases as
the values of the digital code input to it increase.
Pertaining to a radio-communication system that operates on more than one
channel at the same time. The individual channels might contain identical
information, or they might contain different signals.
See MIO.
To assign more than one signal to a channel. See also mux.
Multiplexer—A set of semiconductor or electromechanical switches
arranged to select one of many inputs to a single output. The majority of
DAQ cards have a multiplexer on the input, which permits the selection of
one of many channels at a time.
A switching device with multiple inputs that sequentially connects each of
its inputs to its output, typically at high speeds, in order to measure several
signals with a single analog input channel.
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