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2.12 Red Ramp test screen
This screen is used to test light border blemishes and bright pixels. All areas of the active
area are colored at a specific gray level, based on MS Paint 0-255 RGB scale:
3. ACCEPTANCE REQUIREMENTS
3.1 Test Conditions (as tested in OEM projector)
· Projector degamma correction shall be linear. Using HD Control "Curtain" Mode is
equivalent.
· Image noise reduction algorithms "Blue Noise STM" and "Boundary Dispersion" shall be
set to "off".
· Projector shall be used in front projection mode using a customer-specified screen, and
OEM optical system.
· The diagonal size of the projected image shall be 52 inches (132cm).
· The projected image shall be inspected from a 60 inches (1.52 meter) minimum viewing
distance.
· Projector will be properly focused on the DMD array as shown on the screen.
· Testing time is limited to 20seconds per screen.
· Refer to Table 1 for acceptance criteria, in specified order:
TEST
TEST
ORDER
1
Major Dark Blemish Blue 90
2
Dark Pixel
3
Border Defects
4
Major Light Blemish Gray 6
All manuals and user guides at all-guides.com
Blue Value
Red Value
Green Value
SCREEN
Blue 90
Zoned Screen (see
below figure 1)
Gray 10
Major Dark Blemish
0
Start 0,end 255
0
ACCEPTANCE CRITERIA
No dark blemishes visible on Blue 90
0 dark pixels allowed in Zone A
<=2 dark pixels allowed in Zone B
No adjacent dark pixels
No border defects visible
No light blemishes visible on Gray 6
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