JVC 250 Service Manual page 189

Glossary
S-Video
Saturated Color
Scan
Scan Line
Scan Rate
Synchronization
Source input
Technician Remote
Throw Distance
Underscan
Vertical Height Pots
Vertical Resolution
A-4
An image signal that has the luminance (Y)
information separated from chrominance (C)
information.
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.
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.
One horizontal line in a graphics frame.
The frequency or times per second one line is
scanned across an image display device such as a
CRT.
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.
The source of image and sync signals being input
into the projector. Typical source inputs are:
Computers, VCRs, Image generators, Satellite
feed.
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.
Distance from the projector to the screen.
Decrease raster size horizontally and vertically so
that all four edges of the picture are visible on the
display.
Potentiometers located on the Horizontal/Vertical
Deflection PCB. Used to adjust vertical height.
The amount of detail that can be perceived in the
vertical direction. The maximum number of
Model 250 Service Manual