National Instruments NI PXI-562X - Manual (Page 30)

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