LG RD-JT30 Service Manual page 75

Chapter 1 Engineering Specification
1.0 Optical Performance
1.1 ANSI Brightness
1.1.2 Minimum
1.2 Brightness Uniformity
1.2.2 Minimum
1.3 Contrast Ratio
1.3.1 ANSI Contrast
1.3.2 FOFO Contrast
1.4 Light Leakage
1.4.1 Light Leakage in
Active Area
1.4.1 Light Leakage out
of Active Area
1.5 Color
1.5.1 White
1.5.4 Red
1.5.5 Green
1.5.6 Blue
1.6 Color Uniformity
1.6.1 White
1.6.2 Red
1.6.3 Green
1.6.4 Blue
2.0 Image Quality
2.1 Throw Ratio
2.2 Zoom Ratio
2.3 Distortion
2.3.1 Keystone
Distortion
2.3.2 Vertical TV
Distortion
2.4 Projection Offset
2.5 Focus Range
2.6 Focus
Tested under 60" (diagonal) image size unless other specified.
Measurement Details refer to Appendix A.
650
75%
250:1
800:1
<3.5 lux within 60" (diagonal) image size
<3.5 lux between of 60" (diagonal) image size and 80"
(diagonal) area
x
0.300
0.650
0.350
0.140
x
±0.04
±0.04
±0.04
±0.04
45" ±5% Diagonal at 2m
1.3:1
<1.15%
<1.0%
128% ±5%
1.5~8m
Test Pattern: Croma 84 X pattern
Observation: 1m from observer to screen
Criteria:
2M
X clear all over screen
y
0.370
0.320
0.580
0.080
y
±0.04
±0.04
±0.04
±0.04
1