Christie Mirage M Series User Manual page 64

Section 3: Operation
• INPUT PEAK DETECTOR
A tool to assist with defining individual input levels, enabling you to accurately set the Input Levels for any
particular source with the appropriate image. 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 grey.
When used with a smooth greyscale 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 levels 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
Peak Detector (RED EXAMPLE
1. Display a 16 level greyscale test pattern from the desired external source, and enter a checkmark in the
Input Peak Detector check box.
uniform grey field before adjustment or extreme crushing.
2. Display one primary color.
each setting.
3. For the current color, adjust its corresponding Black level slide bar just until a single band of black appears
at one edge of the screen. This band represents the first band of the greyscale pattern, which should be
100% black.
4. With the same color still active, adjust its corresponding Input Drive slide bar just until a single band of
color appears at the opposite edge of the screen. This band represents the last band of the greyscale pattern,
which should be 100% white (or the current color, if a certain color is enabled).
5. Check the black band and adjust the black level slide bar if necessary.
affects the gain. Only adjust when necessary.
6. Repeat Steps 3-5 with the 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 check box will clear.
3-26
SHOWN).
NOTE:
Select Auto Color Enable to ensure the correct color is displayed for
NOTE:
F 3-27 A
IGURE DJUSTING
(RED EXAMPLE SHOWN)
Figure 3-27 Adjusting Input Levels Using the
The Input Peak Detector will initially render the greyscale as a
I L U
NPUT EVELS SING THE
Adjusting the black levels
NOTE:
P D
EAK ETECTOR
Mirage M Series User Manual
020-100575-02 Rev. 1 (11-2010)