Runco Video Xtreme VX-40d Owner's Operating Manual page 58

Section 3: Operation
NOTES: 1) Input levels apply for the current source only, but for any color temperature
used. 2) Assuming that color temperature has been set up based on the internal test
patterns, you can then set up input levels for a given source so that it matches the color
temperature of the internal test patterns.
PEAK DETECTOR – The Peak Detector is a fast method for defining individual input
levels, and can improve the accuracy of input levels set by the Auto Input level function.
Enabling the Peak 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 blacklevels and input drives 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.
See Figure 3.13. Adjusting Input Levels Using the Peak Detector:
1. Display a 16 level grayscale test pattern from the desired external source, and
enter a checkmark in the Peak Detector checkbox. NOTE: The "Peak Detector"
will initially render the grayscale as a uniform gray field before adjustment.
2. Display one primary color (use Color Enable to select).
3. For the current color, adjust its corresponding "Blacklevel" 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.
4. With the same color still active, adjust its corresponding "Input Drive" 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.
5. Go back and check the black band—adjust the blacklevel slidebar if necessary.
Blacklevel and Input Drive adjustments are related, so you may have to go back
and forth until both bands are just optimized.
6. Repeat Steps 2-5 with the other two remaining primary colors. When each
primary color shows one optimized black band and white (or colored) band, the
input levels for this source are correctly set. Upon exiting the Input Levels menu,
the Peak Detector checkbox will clear.
50
Runco VX-40d/-50d/-60d/-80d Owner's Operating Manual