6
3.2 Rear Panel
1 HDMI OUTPUT: HDMI/DVI output.
2 OPTICAL INPUT: Connected external S/PDIF audio source.
3 DC 5V/2A: Power input.
HDMI OUTPUT
OPTICAL INPUT
DC 5V
1
2
3
4. Pattern table
CPA-4 has 8 groups with 36 patterns.
GROUP
PATTERN
COMMENT
C
ol
or
B
a
r
H/V color bars
Application
The color bar pattern in fact provides suf
fi
cient information for a good overall
check on color performance. This includes the checks on burst keying,
subcarrier regeneration, RGB ampli
fi
ers, the delay chrominance/luminance
and saturation check.
G
re
y
Sc
a
le
step8 / 16 / 32
Application
The Greyscale pattern is used to locate faulty linearity of the video ampli
fi
er
or greyscale setting. Nonlinearities mainly result in a compression of the white
level.
1
2
3
4
