📚 noun • entry_id 54180
test card
Meanings (ES + gloss)
carta de ajuste
A test signal, typically broadcast at times when the transmitter is active but no programme is being broadcast (often at startup and closedown).
In 1967, the BBC needed a ‘test card’ for its new colour broadcasts, to be put on the screen when programmes were not being transmitted so engineers could adjust the quality of the…
Phrases
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Word forms