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Glossary
© National Instruments Corporation G-5 NI PCI-1410 User Manual
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 image acquisition and DAQ boards directly by means of
connectors on top of the boards for precise synchronization of functions.
S
scatter-gather DMA A type of DMA that allows the DMA controller to reconfigure on-the-fly.
SDRAM
Synchronous DRAM is a form of dynamic RAM memory that is about 20%
faster than EDO RAM. SDRAM interleaves two or more internal memory
arrays so that while one array is being accessed, the next one is being
prepared for access.
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.
T
trigger Any event that causes or starts some form of data capture.
TTL Transistor-transistor logic.
V
value The grayscale intensity of a color pixel computed as the average of the
maximum and minimum red, green, and blue values of that pixel.
VI Virtual Instrument. (1) A combination of hardware and/or software
elements, typically used with a PC, that has the functionality of a classic
stand-alone instrument. (2) A LabVIEW software module (VI), which
consists of a front panel user interface and a block diagram program.
VSYNC Vertical synchronization signal. The synchronization pulse generated at the
beginning of each video field that tells the video monitor when to start a
new field.