~
Adjustment method for the measurement mode
Because this mode requires brightness (cd/m
2
) and chromaticity coordinates (x-axis, y-axis), a
measuring instrument such as a colorimeter (Minolta CS-100/CL-100/CL200 or TOPKON
SR-3) is used.
A PC and projector are connected with an RS-232C cable combined with adjustment software
(Panasonic Primary Colors Support Software (PPCSS)).
* Because the system generates some color unevenness, measurement should be made near
the image joint part.
* Black measurement is also available. The room should be made dark.
Select color matching to “Measurement Mode” and enter the actual measured data in the
“Measurement Data”.
Enter the value of black “BK”, red “R”, green “G”, blue “B”, cyan “Cy”, magenta “Mg”, yellow
“Ye”, and white “Wh”.
Using the software, perform automatic computation of the color area data to be used in
common by the multiple projectors, and transmit the correction value to each projector.
* Turn off on-screen to avoid projection during single color display.
Color matching is completed by checking the actual projection and single color.
* Enter and project each signal, and adjust the white balance in the user mode.
Memory is provided for each input signal.
* Points to keep in mind
1) In the case of TH-D7700, a projected screen size exceeding 100 inches requires the input
of corrected brightness measurement data. (Malfunction is possible with a small brightness
value)
Correction value is 10 times or 100 times the measured brightness.
< Correction Example >
Green brightness G-Y measurement data 723cd/m
2
a Input data 7230cd/m
2
(10 times)
Similarly, a value 10 times the measured brightness should be entered for BK, R-Y, B-Y
and W.
Approximate value of brightness correction input is several thousand cd/m2 for G-Y
input data.
2) When using the Minolta CS-100A/CA-100, a brightness value less than 30cd/m2 cannot be
measured.
When the variation in white brightness is small between multiple projectors, enter an
approximate BK brightness value. (Example: 1cd/m
2
)
The measured chroma coordinates (x-axis, y-axis) are not accurate, and should be
used only for reference when adjusting the color temperature. (This is due to the
difference between the peak value of the lamp wavelength of a high-pressure mercury
lamp and the wavelength measured by the sensor)
Accurate adjustment of color temperature requires a spectroradiometer such as
TOPCON SR3.
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