A test card, also known as a test pattern or start-up/closedown test, is a television test signal, typically broadcast at times when the transmitter is...

Test Card F is a test card that was created by the BBC and used on television in the United Kingdom and in countries elsewhere in the world for more than...

replaced by the first version of Test Card C. Test Card B was an early BBC television test card. It was very similar to Test Card A but was never broadcast,...

The Indian-head test pattern is a test card that gained widespread adoption during the black-and-white television broadcasting era as an aid in the calibration...

known for appearing in the centrepiece of the United Kingdom television Test Card F (and latterly J, W, and X), which aired on BBC Television from 1967...

The Wisconsin Card Sorting Test (WCST) is a neuropsychological test of set-shifting, which is the capability to show flexibility when exposed to changes...

The TVE colour test card (Spanish: Carta de ajuste en color de TVE) was an electronic analogue TV test card adopted by Televisión Española with the introduction...

The Green Card Test (GCT) is a criterion used by the Internal Revenue Service (IRS) in the United States to determine whether an individual qualifies...

faces of the cards show 3, 8, blue and red. Which card(s) must you turn over in order to test that if a card shows an even number on one face, then its opposite...

of a neutral test card, or gray card. At best, a flat card is an approximation to a three-dimensional scene, and measurement of a test card may lead to...