Reference
Luminance Gain Measurement. The signal is driven along the vertical axis above and below the center box by the luminance signal. The luminance gain is correct when the center dot (clamped black level) is centered in the target box and the positive and negative excursions end at the top and bottom of the graticule. Perfect monochrome signals appear as a thin vertical line. Any deviation or bending off the center line indicates a color variation from the monochrome setup of the display monitor.
Interchannel Timing Measurement. The scale (sequence of dots) between the green and magenta targets provides a way to check interchannel timing
Figure
Pr and Pb Gain Measurement. The horizontal deflection of the top half of the display is an indication of the Pb gain and the lower half indicates the Pr gain. If the color bar signal dots are within the horizontal dimensions of the appropriate graticule targets, the Pb and Pr gains are within 2% of the correct amplitude.
Since the vertical and horizontal dimensions of the graticule target boxes indicate 2% luminance and color difference gain errors, respectively, you can evaluate each color bar for encoding accuracy with these limits.
WFM700 Series Waveform Monitors User Manual | 3- 43 |