Matrox Meteor Installation And Hardware Reference page 54

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PCI Primary/Secondary Bus
A high-performance bus that provides a
processor-independent data path between the CPU and
high-speed peripherals.
PLC
Programmable Logic Controller. A device used to automate
monitoring and control of industrial plants. It can be used as
a stand-alone device or in conjunction with data acquisition.
Progressive scanning
Describes a transfer of data in which the lines of the source
input device are written sequentially into the destination
buffer.
Also known as non-interlaced. See also interlaced scanning.
RAMDAC
Random access memory digital-to-analog converter. A digital
to analog converter that includes static RAM for use as a
look-up table.
Real-time processing
The processing of an image as quickly as the next image is
grabbed.
Also known as live processing.
Reference levels
The zero and full-scale levels of an analog-to-digital
converter. Voltages below a black reference level are converted
to a zero pixel value; voltages above a white reference level
are converted to the maximum pixel value. Together with the
analog gain factor, the reference levels affect the brightness
and contrast of the resulting image.
RGB
A color space that represents color using the primary colors
(red, green and blue) as components.