test card
"Test cards" are used in both television broadcasting and optometry to ensure proper calibration and assessment.
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Definition
C1Television Broadcasting
(technical)A visual pattern or image broadcast when no program is on air, used for calibrating and aligning video signals.
Example
- The technician used a test card to adjust the color settings of the broadcast equipment.
B2Optometry
(medical)A card with letters or symbols used to evaluate a person's vision.
Example
- The optometrist asked the patient to read the smallest line they could see on the test card.
Similar
Terms that have similar or relatively close meanings to "test card":
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