Programming instructions

Glossary
LabVIEW Data Acquisition Basics Manual G-10
© National Instruments Corporation
multibuffered I/O Input operation for which you allocate more than one memory buffer so
you can read and process data from one buffer while the acquisition fills
another.
multiplexed mode An SCXI operating mode in which analog input channels are multiplexed
into one module output so that your cabled DAQ device has access to the
module’s multiplexed output as well as the outputs on all other multiplexed
modules in the chassis through the SCXI bus.
Also called
serial mode.
multiplexer A set of semiconductor or electromechanical switches with a common
output that can select one of a number of input signals and that you
commonly use to increase the number of signals measured by one ADC.
N
NB NuBus.
NI-DAQ The NI-DAQ configuration utility on the Macintosh.
NI-PNP.EXE
A stand-alone executable that NI-DAQ installs in your NI-DAQ root drive
that detects and configures any Plug and Play devices you have in your
computer.
NI-PNP.INI
A file, generated by the
NI-PNP.EXE
, that contains information about all
the National Instruments devices in your computer, including Plug and
Play devices.
NIDAQCFG.EXE
The NI-DAQ configuration utility in Windows.
nodes Execution elements of a block diagram consisting of functions, structures,
and subVIs.
nonlatched 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
immediate digital I/O.
non-referenced signal
sources
Signal sources with voltage signals that are not connected to an absolute
reference or system ground.
Also called
floating signal sources. Some
common example of non-referenced signal sources are batteries,
transformers, or thermocouples.
Non-referenced
single-ended (NRSE)
measurement system
All measurements are made with respect to a common reference, but the
voltage at this reference can vary with respect to the measurement system
ground.