Tektronix WFM4000 Series, Руководство пользователя

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Checking Chroma/Luma Delay (Lightning Display)
3. Use the arrow keys and the SEL button
to set the menu in the steps that follow.
4. Set the Display Type to Lightning .
5. Set BAR TARGETS to match your input
signal.
6. Select Center Waveform , and press
SEL if you want to center the waveform.
7. Press the VECT button to close the
pop-up menu.
8. Determine where transitions intersect the
delay scales and derive the timing error
in nanoseconds, as de
fl ected from the
center mark:
The center mark of the nine marks
spanning each green-magenta
transition is the zero error point.
Alignment to a mark towards black
means the color-difference signal
lags with respect to luma.
Alignment to a mark towards white
means the color-difference signal
leads the luma signal.
The upper half of the display
measures the Pb to Y timing; the
bottom half measures the Pr to Y
timing.
30 WFM4000 and WFM5000 Waveform Monitors User Manual