31
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%)
pattern. All steps must appear,
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
5400
°
K 6500
°
K 7500
°
K
36
48
18
27
'
'
'
+
−
=
v
u
u
x
0.333 0.312
0.296
36
48
18
12
'
'
'
+
−
=
v
u
v
y
0.333 0.329
0.316
3
12
2
4
'
+
+
−
=
y
x
x
u
0.210 0.197
0.190
3
12
2
9
'
+
+
−
=
y
x
y
v
0.473 0.468
0.459
Deviation:
u’v’=
2
'
2
'
(
v
u
∆
+
∆
<=0.010 <=0.010
<=0.010
Color Temp 4 = color temp is the same as that of 6500K
Summary of Contents for PE8700 - DLP Projector - HD
Page 16: ...15 Appendix C Drawings and Attachments Drawing 1 Top view of BENQ PE8700 video projector ...
Page 17: ...16 ...
Page 26: ...25 6 Packaging Description ...
Page 27: ...26 7 Appearance Description ...
Page 28: ...27 ...
