National Instruments PCI-1407, Руководство пользователя

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Glossary
IMAQ PCI/PXI-1407 User Manual G-10 © National Instruments Corporation
relative accuracy a measure in LSB of the accuracy of an ADC; it includes all nonlinearity
and quantization errors but does not include offset and gain errors of the
circuitry feeding the ADC
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 12-bit resolution, one part in 4,096
resolution, and 0.0244 percent of full scale.
ROI region of interest—a hardware-programmable rectangular portion of
the acquisition window
ROM read-only memory
RS-170 the U.S. standard used for black-and-white television
RSE referenced single-ended—all measurements are made with respect to a
common reference measurement system or a ground. Also called a
grounded measurement system.
RTSI bus Real-Time System Integration Bus—the National Instruments timing bus
that connects IMAQ and DAQ boards directly, by means of connectors on
top of the boards, for precise synchronization of functions
S
s seconds
scaling down circuitry circuitry that scales down the resolution of a video signal
scatter-gather DMA a type of DMA that allows the DMA controller to reconfigure on-the-fly
sync tells the display where to put a video picture; the horizontal sync indicates
the picture’s left-to-right placement and the vertical sync indicates
top-to-bottom placement
syntax the set of rules to which statements must conform in a particular
programming language
system RAM RAM installed on a personal computer and used by the operating system,
as contrasted with onboard RAM