TVE test card

The TVE colour test card (Spanish: Carta de ajuste[1][2] en color de TVE) was an electronic analogue TV test card adopted by Televisión Española with the introduction of PAL colour broadcasts[3] in 1975.

[4][5] It is notable for its unique design, created by the Danish engineer Finn Hendil [da] (1939–2011)[6] in 1973,[7] under the supervision of Erik Helmer Nielsen at the Philips TV & Test Equipment laboratory in Amager, south of Copenhagen,[8][9] the same team that developed the popular Philips PM5544 test pattern.

[6] The test card was considered part of the regular TV schedule, figuring among daily program listings published in newspapers and magazines.

[1][11] It was said to be the most viewed program in some days due to people watching the test card while waiting for broadcasts to start in the afternoon.

Signal values of this element are: Located at the top of the circle and composed of 100% white lines, it allows for verification of the low-frequency response of the transmission chain.

The brightness value of each step varies with a ratio of 20%, as follows: Located within the circle, the gratings are composed of alternating white and black lines.