Entry from British & World English dictionary
Definition of test card in English:
A still television picture transmitted outside normal programme hours and designed for use in judging the quality and position of the image.
- Viewers started to get used to the idea that if they switched on their TV screens before 9 am they would have a programme to watch as opposed to a test card or a blank screen.
- Practice varied from company to company - but the ten minutes of blank silence before the ITA test card appeared always gave a dramatic feeling of finality to the transmission.
- I still secretly believe that afternoons are the time for the test card and you shouldn't watch television when the sun is out.
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