National Instruments NI 4472, User Manual, Page: 66 / 73

Glossary
© National Instruments Corporation G-11 NI 4472 User Manual
RSE See SE.
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
S
s seconds
S samples
S/s samples per second—used to express the rate at which a DAQ device
samples an analog signal
sample counter the clock that counts the output of the channel clock, in other words, the
number of samples taken. On devices with simultaneous sampling, this
counter counts the output of the scan clock and hence the number of scans.
SE single-ended—a term used to describe an analog input that is measured
with respect to a common ground
self-calibrating a property of a DSA device that has an extremely stable onboard reference
and calibrates its own A/D and D/A circuits without manual adjustments
by the user
sensor a device that responds to a physical stimulus (heat, light, sound, pressure,
motion, flow, and so on), and produces a corresponding electrical signal
signal conditioning the manipulation of signals to prepare them for digitizing
SMB a type of coaxial connector
SNR signal-to-noise ratio—the ratio of the overall rms signal level to the rms
noise level, expressed in decibels
software trigger a programmed event that triggers an event such as data acquisition
software triggering a method of triggering in which you simulate an analog trigger using
software. Also called conditional retrieval.
STC system timing controller