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Glossary
A-4 Model 250 Service Manual
S-Video An image signal that has the luminance (Y)
information separated from chrominance (C)
information.
Saturated Color 1) A color as far from white, black or gray as it
can be (i.e., vermilion rather than pink). 2) A
display misadjustment that results in unnaturally
bright colors.
Scan To scan, is to move across the image frame, one
line at a time, either to detect the image, as in an
analog or digital camera, or to refresh a CRT-
based display.
Scan Line One horizontal line in a graphics frame.
Scan Rate The frequency or times per second one line is
scanned across an image display device such as a
CRT.
Synchronization Also called “sync” for short. Pulses that time the
display of image information to the horizontal and
vertical CRT deflection. Signals included with the
source input that control the monitor's scan
circuits to properly time the lines and frames of a
picture.
Source input The source of image and sync signals being input
into the projector. Typical source inputs are:
Computers, VCRs, Image generators, Satellite
feed.
Technician Remote Remote control used during Model 250 setup and
adjustment. Alternative to Standard Remote.
Provides access to many of the setup functions by
direct keys instead of by menu maneuvering.
Throw Distance Distance from the projector to the screen.
Underscan Decrease raster size horizontally and vertically so
that all four edges of the picture are visible on the
display.
Vertical Height Pots Potentiometers located on the Horizontal/Vertical
Deflection PCB. Used to adjust vertical height.
Vertical Resolution The amount of detail that can be perceived in the
vertical direction. The maximum number of