Introduction to Dynamic Resolution Test Card

The dynamic resolution test card is specifically developed to detect the resolution characteristics of TV cameras and the interference of "color mixing" in TV transmission systems. The test card consists of a band plate distributed throughout the entire image area, where the rings on the image expand outward at linearly increasing spatial frequencies. Grid lines indicate spatial frequencies in both vertical and horizontal directions, with a center position of 2MHz and an edge position of 1MHz. The spatial frequency of the horizontal edge on the image can reach 8MHz, and the spatial frequency of the vertical edge can reach 6MHz. The spatial frequency of the corner of the test card is 10MHz.

The dynamic resolution test card is used to determine the following characteristics of TV cameras and TV transmission systems

• Resolution in horizontal, vertical, and diagonal directions
• Resolution depends on the scanning position
• Horizontal and vertical aperture correction effect
• Scattering of scanning beam of camera (valve camera)
• The interference effect between the shadow mask structure of the color cathode ray tube corresponding to the strip and television grating.
• The effect of PAL encoding (such as "cross color") is reflected during the movement of the camera (or test card) in both horizontal and vertical directions: dynamic resolution, time interference interference

This dynamic resolution test card is particularly suitable for use with multidimensional measurement devices (horizontal, vertical, and if possible, temporal) for television signal filters. These devices can be TV camera lens aperture correctors, as well as standard PAL decoders (with line delay) and vanity filter PAL decoders. Tape can also be used in the preprocessing and pre filtering effect measurement of MAC systems (based on color line sequence transmission). The dynamic resolution test card has been proven to reliably measure CCD cameras.