CHESSBOARD TEST CHART

                                         REFLECTANCE

The Y06A test chart is designed for checking geometry and resolution.

DATA

Similar to a chessboard the test chart is composed of 13 x 18 black and white square fields which are surrounded by

rectangular at the edges that correspond to the 14/19 grid raster lines of electronic test generators. (The division of the

horizontal grid lines of these generators corresponds to 42 lines per complete picture.)

The inner circular lines of the nine sector stars mark a 625-line structure. The larger circular lines mark a structur of

312 lines. Horizontal resp. vertical line rasters are arranged in 33 white fields. They correspond to frequency raster

of 2, 3.5 and 5 MHz.

UTILIZATION

• Checking geometry and the congruency of raster, by means of an electronically generated grid, if necessary

• Checking the uniformity of the signal generation.

• Checking resolution and its distribution over the picture area.

• Checking back focal distance.