Glossary
NI 2501/2503 User Manual G-4
©
National Instruments Corporation
multiplexer 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
mux See multiplexer.
N
NI-SWITCH an IVI-based instrument driver that supports the National Instruments line
of switch cards
P
PXI PCI with extensions for instrumentation
R
random scanning scanning the channels in a mux in any order
relay a switch that connects or disconnects the signal to a common through the
physical movement of a metal arm
RMA Return Material Authorization
rms root mean square—the square root of the average value of the square of the
instantaneous signal amplitude; a measure of signal amplitude
RTD resistance temperature detector—a metallic probe that measures
temperature based upon its coefficient of resistivity
S
s seconds
scan the data acquisition of signals connected to multiple channels of a
multiplexer. Typically, the measurement device uses a trigger to
advance the multiplexer to the next channel in the scan.
scan list a list of channels supplied to NI-SWITCH that indicates the order in which
channels will be scanned