JVC Model 200 service manual Vhs

	Glossary
Luminance	Abbreviated as "Y." The portion of the signal that
	contains the black and white information, which
	affects brightness.
Noise	An undesirable electrical interference of a signal.
Overscanning	Displaying less than the complete area of an
	image to a viewer (i.e., scanning beyond the
	visible area). All TV sets are overscanned at
	least slightly, so that viewers do not see blanking.
Raster	The area illuminated by the scan lines on a CRT.
Resolution	The degree of sharpness of a displayed or printed
	character or image; the amount of detail in a
	picture. On a display screen, resolution is
	expressed as the number of horizontal dots
	(columns) by the number of vertical lines (rows).
	For example, a 680 x 400 resolution means 680
	dots across each of 400 lines.
Retrace	The blanked-out line traced by the scanning
	beam of a picture tube as it travels from the end
	of any horizontal line to the beginning of either
	the next horizontal line or field. The beam is
	turned "off" during retrace.
RGB (Red, Green, Blue)	Refers to the method of recording and generating
	colors in a video system. On a television or color
	monitor, colors are displayed as varying
	intensities of red, green and blue dots. When
	red, green and blue are all turned on high, white
	is produced. When all dots are turned off, the
	base color of the screen appears.
Rollbar Assembly	Assembly where the front and rear cover are
	hinged to. Used to hold covers in place.
S-VHS	A high band video recording process for VHS that
	increases picture quality and resolution capability.
	S-VHS tape machines use a special output
	terminal which allows separate output of
	luminance (Y) and chrominance (C) picture
	information to monitors equipped with S-Video
	inputs.
S-Video	A video signal that has the luminance (Y)
	information separated from chrominance (C)
	information.

Model 200 Service Manual B-3