FROM THE ARCHIVE OF: Dave Baldwin
In this excerpt from a 1976 Open University programme, some discussion about the uses of the familiar Test Card F pattern.
[00:00:00] PROGRAMME: the programme discusses some of the uses of the test card.
Initially, the test card is used to demonstrate the effect of adding an extra path, causing ghosting.
- High frequency response.
- Low frequency response.
- Non-linear effects on the video signal.
- The ends of the arrows at the edges of the test card can be used to adjust the size of broadcast picture.
RELATED ARTICLE: the history of the BBC trade test transmission.
PICTURED: Open University programme discussing test card uses. COPYRIGHT: BBC.