Good resolution of a picture is indicated by sharply defined objects and no
blurring or running together of closely spaced lines or points. Horizontal detail
and vertical detail must be considered separately in a television picture.
maximum vertical resolution is determined by the number of active scanning lines.
The horizontal resolution is determined by the maximum number of changes in voltage
that can occur in each line that is scanned.
Standard test charts have been developed to permit more comprehensive testing
of system performance.
a. The resolution chart (fig 3-27) can be used for making system quality
tests for geometric distortion (linearity), aspect ratio, resolution, shading
uniformity, frequency response, streaking, interlace, gray scale reproduction
(contrast), brightness, and RF or other high frequency interference.