On both sides of this central circle four circles with resolution wedges are arranged.

　　HIGH RESOLUTION TEST CHART

　　REFLECTIVE

　　All frequency values in the test chart are indicated in cph (cycles per height). In the central circle

　　three resolution wedges with different frequencies are arranged vertically and horizontally. They

　　reach from 100 to 250, from 200 to 500 and from 400 to 1000 cph. In addition, two resolution

　　wedges angled in 45° generate frequencies of 200 to 500 cph.

　　In the middle of the test chart and on the left and right sides there are four squares with multi bursts

　　that are inclined at angles of 0°, 45°, 90° and 135 ° generate a different frequency (141.4 cph) in

　　horizontal and vertical direction (due to their inclination). The inner white and the four outer circles

　　enable a rough appraisal of the scan linearity. The outer ones show cross-shaped resolution

　　wedges. The circular rings, which can also be used for checking geometry, are designed for

　　marking the resolution in vertical and horizontal direction. Resolution is shown at 200, 300, 400, 600

　　and 800 cph.

　　In the center of the test chart both in the gray and the white area bar elements are arranged with a

　　length of 1 (= half the picture-height), 2, 4, 8, 16, 32 and 64 cph. Left of the right vertical gray scale

　　there are five additional short bars with 100, 300, 500, 700 and 900 cph.