Service manual

STP 11-25R13-SM-TG
Glossary - 22
resolution (vertical)
The amount of resolvable detail in the vertical direction in a picture. It is usually expressed as the number
of distinct lines, alternately black and white, which can be seen in a test pattern. The number of horizontal
scanning lines per frame primarily fixes vertical resolution. Beyond this, vertical resolution depends on the
size and shape of the scanning spots of the pick up equipment and picture monitor and does not depend
on the high frequency responses or bandwidth of the transmission medium or picture monitor.
RF pattern
A term applied to describe a fine herringbone pattern in a picture. It may also cause a slight horizontal
displacement of scanning lines resulting in a rough or ragged vertical edge of the picture. Caused by high
frequency interference.
roentgen equivalent man (rem)
Radiation dose that produces the same physiological damage as the absorption of 1 rad of X-rays or
gamma rays from alpha and beta particles and neutrons.
roll
A lack of vertical synchronization that causes the picture as observed on the picture monitor to move
upward or downward.
roll off
A gradual attenuation of gain frequency response at either or both ends of the transmission pass band.
R-Y
A color difference signal obtained by subtracting the luminance signal from the red camera signal.
saturation (color)
The vividness of a color, described by such terms as bright, pastel, deep, etc. Saturation is directly
related to the amplitude of the chrominance signal.
setup
The separation in level between blanking and reference black levels (normally 7.5 IRE).
skewing
Displaying properties of being biased, dislocated, and slanted.
subcarrier (SC)
A carrier used to generate a modulated wave that is applied, in turn, as a modulating wave to modulate
another carrier.
subcarrier reference (SC REF)
Connection on equipment to lock that equipment to a subcarrier.
switches
Mechanical devices for closing, opening, or changing the connections in an electrical circuit.
synchronization (sync)
Applies to the sync signals, or timing pulses, which lock the electron beam of the picture monitor in step,
both horizontally and vertically with the electron beam of the pickup tube. The color sync signal is known
as the color burst.
tearing
A term used to describe a picture condition in which groups of horizontal lines are displaced in an
irregular manner. Caused by lack of horizontal synchronization.
transceiver