Glossary
©
National Instruments Corporation
G-3
NI PCI-1588 User Manual
L
LabVIEW
a graphical programming language
LED
light-emitting diode—a semiconductor light source
M
master
the requesting or controlling device in a master/slave configuration
O
oscillator
a device that generates a fixed frequency signal. An oscillator most often
generates signals by using oscillating crystals, but also may use tuned
networks, lasers, or atomic clock sources. The most important
specifications on oscillators are frequency accuracy, frequency stability,
and phase noise.
output impedance
the measured resistance and capacitance between the output terminals of
a circuit
P
PCI
Peripheral Component Interconnect—a high-performance expansion bus
architecture originally developed by Intel to replace ISA and EISA. It is
achieving widespread acceptance as a standard for PCs and work-stations;
it offers a theoretical maximum transfer rate of 132 Mbytes/s.
PFI
Programmable Function Interface
precision
the measure of the stability of an instrument and its capability to give the
same measurement over and over again for the same input signal
propagation delay
the amount of time required for a signal to pass through a circuit
R
RTSI bus
Real-Time System Integration bus—the NI timing bus that connects DAQ
devices directly, by means of connectors on top of the devices, for precise
synchronization of functions
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