Jadak Photo Research SpectraScan PR-7 Series, User Manual

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Chapter 5
– Setup Menu
52
RGB D
ISPLAY
C
AL
The R G B measurement mode is designed to provide the user with a convenient, spectrally based interactive
method of performing white point calibrations of CRT’s, LCD’s PDP’s and digital projectors or any other display
technology that features adjustable RGB channels.
During use, the user is presented with a bar graph and associated numerical levels indicating the deviation
amplitude and direction of the three
R G B primaries from the target settings. Once the RGB levels of the display
are adjusted to the target values set by the R G B algorithm, the white point is properly adjusted.
Since the PR-7XX
are spectrally based systems, color matching can be achieved without having a “golden
sample” available as a reference. White point calibrations can be based on user entered target values including
luminance and CIE chromaticity coordinates (CIE 1931 x, y values). The user can also select pre-stored
phosphor sets (NTSC, EBU, CIE, HDTV and SMPTE) or create phosphor primary chromaticity values through
measurement or data entry.
S
ETTING UP
RGB D
ISPLAY
C
AL
M
EASUREMENTS
Prior to making R G B measurements, the proper parameters must be entered into the R G B setup menu to insure
correct results.
FIGURE 45 - RGB DISPLAY CAL SETUP SCREEN