[ToC]

 

WAVEFORM VOLTAGE RELATIONS FOR A 100-PERCENT SATURATED NTSC COLOR-BAR SIGNAL

Robert G. Middleton, Using Scopes in Color TV, Howard W. Sams & The Bobbs-Merrill Companies, NY, 1969

NTSC color-bar waveforms are different from keyed rainbow waveforms in that they are complete color signals, instead of color-difference signals. This is another way of saying that an NTSC signal has a Y or brightness component. Fig. 3-15 shows how an NTSC color-bar waveform is built up from a combination of Y signals and chroma signals. As noted previously, the order of the colors in an NTSC signal is arbitrary. For example, [Fig. 3-16] shows another sequence of NTSC colors in common use. Still another sequence with relative voltage levels is shown in Fig. 3-17 [right].