Teledyne 804A User Manual page 36

804 Series Video Test Generator – User Guide
Refer to the table 7-2 below for a description and depiction of the Image Packs currently offered.
Table 7-2: Custom Test Image Packs
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 B3