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Video Test Patterns

Waveform monitor / vectorscope

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 color bars, such as the ones shown in this illustration.

A lot of information can be gleaned from viewing test patterns on a well-calibrated video monitor, but to analyse the signal in detail, a waveform monitor and/or vectorscope should be used.

Waveform representationVector representation

There are two ways to view the technical characteristics of a video signal: As a waveform representation (left) and as a vector representation (right). To save space these two views can be overlaid (as in the first example next to the color bars).

See more examples of test patterns with waveform/vectorscope displays.