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Some broadcasters that have ceased signing on and signing off in favour of 24-hour broadcasting may perform a sign-off sequence at a certain time in the night (usually between 10:00 p.m. and 1:00 a.m.) as a formality to signify the end of its operating day (in the United States, the broadcast logging day ends at 12:00 midnight local time).
Test cards typically contain a set of patterns to enable television cameras and receivers to be adjusted to show the picture correctly (see SMPTE color bars).Most modern test cards include a set of calibrated color bars which will produce a characteristic pattern of "dot landings" on a vectorscope, allowing chroma and tint to be precisely adjusted between generations of videotape or network feeds.
For screenshots of title cards of television programs or station IDs, use {{Non-free title-card}} instead. Template:Non-free use rationale may be helpful for stating the rationale. To patrollers and administrators: If this image has an appropriate rationale please append |image has rationale=yes as a parameter to the license template.
Nevertheless, the Indian-head test pattern persists as a symbol of early television. Many U.S. television stations chose the image of the Indian-head card to be their final image broadcast when their analog signals signed off for the final time between February 17 and June 12, 2009, as part of the digital television transition in the United States.
This category contains images tagged as screenshots from television programmes/programs or idents. Please ensure that the name of the show is cited on the description page. Please note that, according to Wikipedia:IUP#FORMAT, these screenshots should all be jpegs. Please note that screenshots are not stills released for publicity purposes.
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