Glossary
©NationalInstruments Corporation G-7 NIPXI-562x User Manual
R
Rresistor
RAM random-access memory
random interleaved
sampling (RIS)
method ofincreasing sample rate by repetitively sampling a repeated
waveform
real-time sampling sampling that occurs immediately
record length thesize of a chunk (or record) of data that can be or has been acquired by a
device
resolution Thesmallest amount of input signal change that an instrument or sensor can
detect. Resolution can be expressed in bits, in proportions, or in percent
offull scale. For example, a system has 12-bit resolution, one part in
4,096 resolution, and 0.0244% of full scale.
rms rootmean square—a measure of signal amplit ude; the square root of the
averagevalue of the square of the instantaneous signal amplitude
ROM read-only memory
S
s seconds
S samples
S/s samplesper second—used to express the rate at which an instrument
samples an analog signal
sample rate the speed that a devicecan acquire data
sense in 4-wire resistance the sense measures the voltage across the resistor
being excitedby the excitation current
settling time the amount of time required for a voltageto reach its final value within
specifiedlimits