Sony SRX-R320, Руководство по обслуживанию

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1-77 (E)
SRX-R320
θ 1
θ 2
Luminance meter
Port glass
Screen
5. Determine the measuring point of luminance.
Measure the luminance by placing the luminance meter on the optical axis where the optical axis
connecting the lens and the center of screen (Gray 10 pattern) is specularly re
fl ected ( θ 1 = θ 2) on the
screen surface.
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Find the point where the luminance becomes the maximum level using the luminance meter.
At that time, be careful not to damage the screen. Depending on the environment of the theater, the
luminance may become the maximum level in the place other than the audience seats such as on the
wall surface of the end of the row or on the aisle. Even in such case, be sure to measure the luminance
at the point where it becomes the maximum level.
6. Determine the point where the luminance becomes the maximum level.
To perform the comparative validation of the change in luminance after starting the operation, specify
the point where the luminance becomes the maximum level. (Refer to step 5.)
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The point where the luminance becomes the maximum level may be the same as the point determined
in step 5.
After that, manage the audience seat number and the luminance data in pairs.
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When using the 3D lens, the point where the luminance becomes the maximum level differs between
the L/R lenses because of the different L/R lens positions. In this case, select the midpoint between
the respective maximum luminance points of the L/R lenses.
7. Measure the luminance.
Perform the measurement of luminance in the following conditions.
.
Lamp: New lamp of 30 hours or less lighting time
.
Lamp power: 100%
.
Measuring point: Points determined in steps 5 and 6
.
Measuring pattern: gray10 (screen center)
.
Pre-aging: Perform measurement after leaving it for more than 15 minutes after lighting up.
.
Measuring device: CS100, etc.