Quantum Data 780B User Manual page 41

780B Video Generator/Analyzer – User Guide
Table 4-4: Custom Test Image Packs – ChinaRes Pattern
ChinaRes Pattern Pack
This is a bitmap that is available through the
Image Packs option. The ChinaRes test pattern is
specified by the National Testing and Inspection
Center for Radio and TV Products of China.
The image pack includes both a standard
definition aspect ratio (shown right) and a high
definition aspect ratio. This test pattern is
supported at: 1920x1080, 1280x720, 720x576
and 720x480 resolutions.
The following is a description of the elements in
this test image
1.
Overscan gauges to determine percentage of
overscan.
2.
Centered cross, centered circles, and centered
grid to test centering and concentricity.
3.
White grid to test convergence.
4.
Central resolution wedge gauges for vertical,
horizontal, and diagonal resolutions.
5.
Corner resolution wedge gauges for vertical and
horizontal resolutions.
6.
4-quadrant horizontal and vertical test areas to
judge resolution and display artifacts.
7.
Color bar for testing color purity and chroma
delay.
8.
10-step grayscale to test brightness, contrast, and
luminance.
9.
Split (left and right) grayscales for testing dark-
field and bright-field gray levels.

Average picture level is approximately 50%.
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Revision A7