English

Test card (optometry)

Test card (television)

Noun

test card ‎(plural test cards)

1. (optometry) A card printed with various letters or symbols, used in testing vision.
2. (Britain, television) A test signal, typically broadcast at times when the transmitter is active but no programme is being broadcast (often at startup and closedown).

Synonyms

• (optometry): Snellen chart
• (television): test pattern

Translations

Anagrams

• detracts