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Procedure:
A. Black Level Adjustment: (DLP brightness)
1.
Change pattern of pattern generator :
Pattern : Black (Gray 0)
2.
Adjust DLP Brightness to let the black picture to just distinguish.
B. White Level Adjustment: (AD contrast---R,G,B gain)
1. Change pattern of pattern generator :
pattern : White (100% Gray)
2. Use Lux meter to measure the white level. Adjust the contrast value of AD9883 (RGB)
to let the light output to just max.
3. Change to
32-gray (0 ~ 100%)
C. Offset adjustment at low brightness (AD R, G, B offset)
1. Change Timing and pattern of pattern generator :
pattern : 10% Gray
2. Set user color temp to 6500K.
3. Adjust AD9883 Red and Blue Offset to meet 6500K color spec.
D. Color Temperature at high brightness (Scalar Gamma R, G, B Gain)
1. Change Timing and pattern of pattern generator :
Timing : 800x600@60Hz (H:37.879Khz,V:60.317Hz)
Pattern : 80% gray
2 Color temperature spec: CIE 1976 u', v' chromaticity)
Color temperature
27
u
=
x
−
'
18
u
48
12
v
=
y
−
'
18
u
48
4
x
=
'
u
−
+
2
x
12
9
y
=
'
v
−
+
2
x
12
Deviation:
2 '
∆
u'v'=
(
u
Color Temp 4 = color temp is the same as that of 6500K
All manuals and user guides at all-guides.com
pattern. All steps must appear,
5400 ° K
0.333
'
+
'
v
36
0.333
'
+
'
v
36
0.210
+
y
3
0.473
+
y
3
<=0.010
2 '
+
∆
v
6500 ° K
7500 ° K
0.312
0.329
0.197
0.468
<=0.010
<=0.010
0.296
0.316
0.190
0.459
31
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