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Installation
Runco VX-44d/-55d Owner’s Operating Manual 55
PRE
L
IMINAR
Y
• Clipping Detector: The Clipping Detector is a tool to assist with defining individual
input levels, enabling you to accurately set the white balance for any particular source
with the appropriate image.
Enabling the Clipping Detector activates a special operating mode for detecting only
pixels that are considered black or white; all other levels are displayed as a mid-level
gray. When used with a smooth grayscale pattern in which black and white are known
to be at opposite edges of the image, you can watch these isolated areas while
adjusting individual black and white levels until both black and white edges are just
visible and distinguished from neighboring pixels. Images from this source will then
display correct blacks and whites without crushing.
Figure 3-20. Adjusting Black Levels and White Levels Using the Clipping Detector
1. Display a 16-level grayscale test pattern from the DHD Controller.
2. Enter a checkmark in the Clipping Detector checkbox.
3. Display one primary color.
4. For the current color, adjust its corresponding “Black Level” slidebar just until a single
band of black appears at one edge of the screen. This band represents the first band
of the grayscale pattern, which should be 100% black. Do not adjust too far.
5. With the same color still active, adjust its corresponding “White Level” slidebar just
until a single band of color appears at the opposite edge of the screen. This band
represents the last band of the grayscale pattern, which should be 100% white (or the
current color, if a certain color is enabled). Do not adjust too far.
The Clipping Detector will initially render the grayscale as a uniform
gray field before adjustment or extreme crushing.
Selecting Auto Color Enable ensures that the correct color is
displayed for each setting.
4. Adjust corresponding
black level (red, green or
or blue) until one black
band appears.
5. Adjust corresponding
white level (red, green or
or blue) until one bright
band appears.
3. Choose one primary
color at a time.
1. Pre Calibration
2. Red Black Level 256
3. Red White Level 256
4. Red Black Level 256
5. Red White Level 256
6. Blue Black Level 256
7. Blue White Level 256
8. Auto Color Enable
9. Clamping Back Porch
0. Clipping Detector
Color Enable Red
White Balance
Note
Tip