The test chart is used to measure low and intermediate frequency response (streaking) and flare in video systems. The white background has a density of ~ 0.15 . The black rectangle with an additional white 2T-pulse has a width equal to 25% of picture width (approx. 0.05 MHz). In addition the chart shows a narrow black pulse, width equal to 1% picture width (approx. 1.25 MHz). The density of the black picture area is D > 1.9 (remission < 0,1%).