Video Pattern Generator 2238 User’s Manual
B-12
PATTERN 1-100 Default Patterns
Default Patterns (No. 1 ~ No. 100)
The central big cross is used to adjust the
position of central point. The crosshatch of
12 vertical squares is used to check linearity.
Four corners and central six circles as well
as four corners and central five blocks of
density are used to test resolution. At the
lower end there is a colorbar to check the
normality of R, G, B. Timing/pattern name
and horizontal/vertical frequencies are
located on the top for reference. The outside
frame can be used for size measurement
and pincushion adjustment.
It is similar to Pattern # 1 but without circle
and colorbar. The luminance of the two
rectangular dot images on the upper middle
are 100% luminance and the rest images are
50% luminance.
The SMPTE RP-133 standard patterns for
general tests.
1. Background Color: The background
color is 50% luminance grayscale.
2. Text: The luminance of the text is
determined by the foreground color that
is 100% here. The pattern is located on
the upper side while the horizontal and
vertical pixels are located on the lower
side.
3. Lines: The white crosshatch line is
2-pixel thick with 75% luminance. The
lattice has 10 vertical grids. (If the
pattern has a 0.5% thickness frame
about 1% distance from the edge, it
means this lattice cannot be used for
linearity test.)
4. Resolution Block-1: A block is located at
four corners and the center respectively.
5. COLORBAR: Both of the upper and
lower side has a colorbar. The order
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