Glossary
NI PCIe-1427 User Manual
G-2
ni.com
D
DAQ
Data acquisition. (1) Collecting and measuring electrical signals from
sensors, transducers, and test probes or fixtures and inputting them to a
computer for processing. (2) Collecting and measuring the same kinds of
electrical signals with A/D or DIO boards plugged into a computer, and
possibly generating control signals with D/A and/or DIO boards in the
same computer.
DMA
Direct memory access. A method by which data can be transferred to and
from computer memory from and to a device or memory on the bus while
the processor does something else; DMA is the fastest method of
transferring data to/from computer memory.
F
frame grabber
A device that digitizes an image and stores it in a computer's memory.
H
handshaking
A type of protocol that makes it possible for two devices to synchronize
operations.
L
LVDS
Low Voltage Differential Signaling (EIA-644).
N
NI-IMAQ
Driver software for National Instruments frame grabbers.
NI Vision
Acquisition Software
A collection of driver software and utilities that acquire, display, save, and
monitor images from any NI frame grabber or IEEE 1394 (FireWire
®
)
camera.
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