National Instruments NI 435 Series, User Manual, Page: 71 / 77

Glossary
© National Instruments Corporation G-7 NI 435x User Manual
PLF power line frequency
Plug and Play devices devices that do not require dip switches or jumpers to configure resources
on the devices—also called switchless devices
port (1) a communications connection on a computer or remote controller;
(2) a digital port, consisting of four or eight lines of digital input and/or
output
PTC positive temperature coefficient
PXI A rugged, open system for modular instrumentation based on CompactPCI,
with special mechanical, electrical, and software features.
R
reading rate the rate, in hertz, at which each sample is updated
resolution the smallest signal increment that can be detected by a measurement
system. Resolution can be expressed in bits, in proportions, or in percent of
full scale. For example, a system has 24-bit resolution, one part in
2
24
= 16,777,216 resolution, and 5.96
×
10
–6
% of full scale.
rms root mean square—the square root of the average value of the square of the
instantaneous signal amplitudes; a measure of signal amplitude
RSVD x reserved
RTD resistance temperature detector—a metallic probe that measures
temperature based upon its resistance
S
s second
S sample
S/s samples per second—used to express the rate at which a NI 435 x samples
an analog signal
sigma-delta technology used for analog to digital conversion
sinter to cause to become a coherent mass by heating without melting