Checking Gamut
To use the Diamond display to check RGB
Gamut:
1.
Perform the Setting up for Gamut Check
procedure, selecting Diamond in step 6.
2.
Compare the signal to the display to
determine out of gamut components,
noting 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 the signal for out of gamut
components:
Example A:
R - OK
G > 700 mV
B - OK
Example B:
R - OK
G - OK
B > 700 mV
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. For example, the signal from a
camera shooting a monochrome chip chart should appear on the Diamond display as a straight, vertical line; if it is not,
then the camera is not balanced.
To isolate gamut brightups, try the following:
Use LINE SEL mode to select individual lines.
Use the PICTURE display to examine the monitor signal with brightups
Use the Area % setting to specify a percentage of the screen for which to ignore for gamut violations.
108
Quick Start User Manual
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