«Test Card» is a signal that is broadcast by television stations when there is no programming. It is usually a visual signal that helps television engineers check if the equipment is properly set up. It may contain various visual elements such as color bars, geometric shapes, text or images.

Test Card may contain information about the station, date and time, as well as technical data. It can also be used to test the quality of the image, color, contrast and other parameters of the television signal.

In the past, Test Card were used more often, as television was less automated. Now they are used less often, but can still be useful for testing equipment and checking signal quality.