Video Test Patterns
|
Technical Equipment Test Patterns |
Television Station IDs etc |
 Video test patterns are used as a technical reference, in order
to analyse and maintain the qualities of a video signal.
The most common patterns are colour bars, such as the ones shown in this illustration. A lot of information can be gleaned from viewing test patterns on a well-calibrated CRT monitor, but to analyse the signal in detail, a waveform monitor and/or vectorscope must be used. |
  There are two
ways to view the technical characteristics of a video signal: As a waveform representation
(left) and as a vector representation (right). In
the example above, these two views are overlaid.
See more examples of test patterns with waveform/vectorscope displays. |