Checking Gamut
1.
Perform the
Setup for Gamut Checks
procedure. Select
Diamond
in step 4.
(See page 32.)
2.
Compare the signal to the display to
determine out-of-gamut components,
and note the following:
The intensity of a vector indicates its
duration.
A momentary out-of-gamut condition
appears as a faint trace. Long
duration violations show as a bright
trace.
See the following step for some sample
out-of-gamut signals.
3.
Consider the following examples when
evaluating for outofgamut components:
A.
Example A:
R - Ok
G > 700 mV
B - Ok
B.
Example B:
R - Ok
G - Ok
B > 700 mV
C.
Example C:
R - Ok
G - Ok, 350 mV
B < 0 mV
Usage Notes
On the Diamond display, monochrome signals appear as vertical lines. Nonlinear component processing, such as from a
gamma corrector that alters white balance, can cause deviations along the vertical axis.
To isolate gamut bright-ups, try the following:
Use the
LINE SEL
button to select individual lines
Use the
PICT
display to examine the signal (turn on gamut bright-ups in the Display Settings submenu of the
Con
fi
guration menu)
Use the
Arrowhead %
setting (found in the Gamut Thresholds submenu of the Con
fi
guration menu) to specify a
percentage of the screen to ignore for gamut violations.
34
WFM4000 and WFM5000 Waveform Monitors User Manual
