ViewSonic VP231WB - 23" LCD Monitor, Service Manual

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H-size: 495.36mm
±
1mm.
V-size: 309.6mm
±
1mm.
(Extra 640x350)
a. 1920x1200: H ± 1mm, V ± 1mm.
b. Others mode: H ± 1.5mm, V ± 1mm.
H-position:
︱
g3-g4
︱ ≦
1.5mm.
V-position:
︱
g1-g2
︱ ≦
1.5mm.
Y (Luminance)
Color temperature x y
Analog DVI
sRGB 0.313 ± 0.01 0.329 ± 0.01 >200 nit >200 nit
9300K 0.283 ± 0.01 0.298 ± 0.01 >150 nit >150 nit
6500K 0.313 ± 0.01 0.329 ± 0.01 >200 nit >200 nit
5400K 0.335 ± 0.01 0.350 ± 0.01 >180 nit >180 nit
5000K 0.346 ± 0.01 0.359 ± 0.01 >180 nit >180 nit
Y (Luminance)
Color temperature
Analog DVI
9300K >220 nit >220 nit
6500K >220 nit >220 nit
5400K >220 nit >220 nit
5000K >220 nit >220 nit
Test pattern signal The following electric faults shall not be conspicuous
1 100IRE white raster pattern Seam, Noise, Beat, Flicker
2 Cross hatch pattern
Ringing, Over shoot, Smear, V-jitter, H-jitter
3 Color bar Color distortion, Noise, Beat, Color tangent
4 Gray scale (16 steps) Noise, Beat, Gamma distortion
5 1dot ON / 1dot OFF pattern Noise, Flicker
6 40IRE gray raster
Noise, Beat, Gamma distortion
a. VG828 digital pattern generator.
b. “TTL” DVI-D single link cable.
a. 1920x1200 75K / 60Hz reduce blank timing.
b. 16, 32, 64, 256 horizontal grays scales.
c. 16, 32, 64, 256 vertical grays scales.
495.36mm
309.6mm
g4
g2
g1
g3
FIG. 2
ViewSonic Corporation
Co
nfidential
-
Do Not Copy VP231wb
Input analog timing 1 ~ 27mode & DVI timing 1 ~ 26 mode:
5.2.2 Instrument test.
5.2.2.1 Picture size & position.
5.2.2.1.1 Picture size.
5.2.2.1.2 Screen center.
5.2.2.1.3 Picture position (refer to FIG.2).
5.2.2.2 Luminance test.
5.2.2.2.2 Input 1920x1200 / 60Hz & full white pattern at 100IRE, adjust brightness 100%, contrast 100%.
5.2.2.2.1 Input 1920x1200 / 60Hz & full white pattern at 100IRE, adjust brightness 100%, contrast 70%.
5.2.2.3.2 DVI performance test.
5.2.2.3.1 Picture quality:
5.2.2.3.2.1 Test equipment:
5.2.2.3 Picture performance test.
5.2.2.3.2.2 Test condition:
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