Noun
test pattern (plural test patterns)
(US, television) A test signal, typically broadcast at times when the transmitter is active but no program is being broadcast.
A BERT typically consists of a test pattern generator and a receiver that can be set to the same pattern. Source: Internet
Ad for the beginning of experimental television broadcasting in New York City by RCA in 1939 Indian-head test pattern used during the black & white era before 1970. Source: Internet
Composition Photomicrograph of two metal-gate MOSFETs in a test pattern. Source: Internet
For example, a border that resembles a color test pattern runs down the outer edges of a spread of nearly 40 carefully placed "colorful" examples, set against a white background, which dazzle the eye. Source: Internet
The Bulova logo, with the phrase "Bulova Watch Time", was shown in the lower right-hand quadrant of the test pattern while the second hand swept around the dial for one minute. Source: Internet
Television test pattern created by RCA in 1939 RCA Television Quad head 2" color recorder/ reproducer used at broadcast studios in the late 1960s, 70s and early 80s. Source: Internet