NOTE.
For instructions on how to take jitter measurements, see Monitoring the
SDI Physical Layer.
Lightning display
The Lightning display is a Tektronix proprietary display that plots the Pr and Pb
signals against luminance. As shown below, Y versus Pb is plotted in the top half
of the display and Y versus Pr is plotted in the bottom half.
Figure 28: Construction of the Lightning display
This display is useful for checking chroma and luma gain, and for checking
chroma to luma delay using the timing marks that show errors in the green to
magenta transition on a color bar signal.
You can set the color bar targets to 75% or 100% and center the trace within the
tile.
The related Vector display plots the Pr signal on the vertical axis and the Pb
signal on the horizontal axis, which is useful for looking at hue and amplitude of
the colors, but does not show luminance information. See also
on
page 140.
Display modes
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