National Instruments BNC-2140 User Manual page 35

Glossary
N
NC
NIST
noise
nonreferenced signal
sources
NRSE
O
onboard channels
output settling time
output slew rate
P
passband
PCI
BNC-2140 User Manual
normally closed, or not connected
National Institute of Standards and Technology
an undesirable electrical signal—Noise comes from external sources such
as the AC power line, motors, generators, transformers, fluorescent lights,
soldering irons, CRT displays, computers, electrical storms, welders, radio
transmitters, and internal sources such as semiconductors, resistors, and
capacitors. Noise corrupts signals you are trying to send or receive.
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 nonreferenced signal sources are batteries,
transformers, or thermocouples.
nonreferenced single-ended mode—all measurements are made with
respect to a common (NRSE) measurement system reference, but the
voltage at this reference can vary with respect to the measurement system
ground
channels provided by the plug-in data acquisition board
the amount of time required for the analog output voltage to reach its final
value within specified limits
the maximum rate of change of analog output voltage from one level to
another
the range of frequencies which a device can properly propagate or measure
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.
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