Nexgen Mediatech Inc.
NO
VER. A1
TITLE
Level 1 Service Manual
PAGE
28/30
11.Test patterns and check points
1 Dot on/off
SMPTE RP133
16 Gray scale
*Check if Clock & Phase is
distorted.
*Check if vertical line and horizontal
line is clear around the center,
four corners
*Check brightness and contrast
*Check the amplitude of RF signal
is distorted.
*Check the gray scale is over
saturated.
32 Gray scale
64 Gray scale
256 Gray scale
*Check the amplitude of RF signal is
distorted
*Check the gray scale is over
saturated.
*Check the amplitude of RF signal is
distorted
*Check the gray scale is over
saturated.
*Check the amplitude of RF signal
is distorted
*Check the gray scale is over
saturated.
Black
White
1 Dot on/off
*Check noise, leakage, ghost
*Check pixel bright/dark dot.
*Check noise, leakage, ghost image
*Check pixel bright/dark dot.
*Check static convergence
Color
R、G、B
*Check color quality, decoding
,color transformation, chroma
/hue/tint time equalization, color
saturation.
*Check pixel bright/dark dot.
*Check color quality
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