BenQ PE8700 service manual Red Ramp test screen, Test Conditions as tested in OEM projector

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:

	Major Dark Blemish
Blue Value	0
Red Value	Start 0,end 255
Green Value	0

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	SCREEN	ACCEPTANCE CRITERIA
ORDER
1	Major Dark Blemish	Blue 90	No dark blemishes visible on Blue 90
2	Dark Pixel	Blue 90	0 dark pixels allowed in Zone A
		Zoned Screen (see	<=2 dark pixels allowed in Zone B
		below figure 1)	No adjacent dark pixels
3	Border Defects	Gray 10	No border defects visible
4	Major Light Blemish	Gray 6	No light blemishes visible on Gray 6

19