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Television Test Cards, Tuning Signals, Clocks and Idents |
 | | Of course special test generators were available that could be used to make accurate measurements of the performance of every aspect of the studio and distribution equipment, but again, how useful it would be to have a pattern that could give a rough indication of performance (or lack of it) from camera to screen. |
 | | Test Card W (16:9) that included almost all the features of Test Card F, had the central colour picture digitally remastered from the original colour reversal transparency, and had additional tests required for digital operations. |
 | | The BBC convention is for trade test cards to be allocated letters, while line-up charts are numbered, though when a new series of precision charts was developed by the BBC in 1958, numbered from 50 onwards, Test Cards D, E and F were given the numbers 54, 55 and 57 in that series. |
| www.pembers.freeserve.co.uk /Test-Cards (7230 words) |
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