Glossary

Phase adjustment

Positions the input image (test pattern, video, graphics, etc.)

 

on the CRT raster. If the phase is misadjusted, the image may

 

"wrap around" the edges or be positioned off the screen.

Pincushion Adjustment Corrects for warped distortion at the sides or top and bottom

 

of the image. The pincushion adjustment is performed on

 

green only and affects all RGB.

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.

RGB X-Hatch

Test pattern of aligned, alternating dots of RGB, used for

 

convergence adjustment.

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.

SAP

(Second Audio Program) The MTS system for television also

 

provides the ability to send an additional audio signal, called

 

Second Audio Program (SAP).

Saturated Color

1) A color as far from white, black or gray as it can be

 

(i.e., vermilion rather than pink).

Model 330, 340SC, and 370SC Service Manual

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JVC 370 SC, 330, 340 SC service manual Vhs