National Instruments NI 6120 User Manual
Page 115
Glossary
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rise time
the difference in time between the 10% and 90% points of the step
response of a system
rms
root mean square
RTD
resistive temperature detector—a metallic probe that measures
temperature based upon its coefficient of resistivity
RTSI bus
real-time system integration bus—the National Instruments timing bus
that connects DAQ devices directly, by means of connectors on top of the
devices for precise synchronization of functions
RTSI_OSC
RTSI Oscillator—RTSI bus master clock
S
s
seconds
S
samples
S/s
samples per second—used to express the rate at which a DAQ device
samples an analog signal
SCANCLK
scan clock signal
scatter-gather
a term that describes very high-speed DMA burst-mode transfers that are
made only by the bus master
signal conditioning
the manipulation of signals to prepare them for digitizing
SFDR
spurious free dynamic range
SISOURCE
SI counter clock signal
SOURCE
source signal
STARTSCAN
start scan signal
STC
system timing controller
system noise
a measure of the amount of noise present in an analog circuit or when the
analog inputs are grounded