Analog Test Card
by Nina Ficur Feenan
Title
Analog Test Card
Artist
Nina Ficur Feenan
Medium
Photograph
Description
analog test card with good morning sign
A test card, also known as a test pattern, is a television test signal, typically broadcast at times when the transmitter is active but no program is being broadcast (often at startup and closedown). Used since the earliest TV broadcasts, test cards were originally physical cards at which a television camera was pointed, and such cards are still often used for calibration, alignment, and matching of cameras and camcorders. Test patterns used for calibrating or troubleshooting the downstream signal path are these days generated by test signal generators, which do not depend on the correct configuration (and presence) of a camera. Digitally generated cards allow vendors, viewers and television stations to adjust their equipment for optimal functionality.
Uploaded
March 9th, 2013
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Viewed 1,351 Times - Last Visitor from New York, NY on 04/15/2024 at 5:22 AM
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