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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 example non-free use rationales, see Wikipedia:Use rationale examples. This template is only for use on images which are screenshots from television. 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.
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.
Off-air screen capture of BBC Test Card F, as seen on BBC1 between 17 February 1991 and 4 October 1997. 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 four decades.
Infobox used on articles about television and web programs. Template parameters This template has custom formatting. Parameter Description Type Status Italic title italic_title A "no" value will disable the automatic italicization of the article. This parameter should not be used most of the time. String optional Television program name name The name of the television program, film or ...
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Additional images in an article outside of the infobox must also comply with non-free content criteria, for the same reasons as above, and should strive to use free images whenever possible. Free images can be used from Wikimedia Commons. (Examples of when not to include non-free content can be seen at WP:Non-free content § Images.)