Christie Entero RPMWU User Manual page 45

To check your image levels and adjust these controls:
1. Confirm that you are using an input on an Analog BNC card or a Dual Link DVI card. Input Levels are not
applicable for sources going through the decoder.
1. Display a representative image for source you are setting up.
2. Make sure that overall "Contrast" and "Brightness" settings are both set to near 50.
3. If black levels are too high (or whites are too low, which is rare), you likely have a noisy source that is
producing skewed input levels.
4. To adjust levels automatically, check to enable Auto Input Levels in the Input Levels menu. Wait for all
six Blacklevel and Input Drive values to stabilize. Uncheck the Auto Input Levels option.
NOTE: Do not use Auto Input Levels for dark images.
5. Exit the Input Levels menu. Exiting the Input Levels menu automatically disables Auto Input Levels and
Auto Color Enable.
NOTE: To adjust levels manually, see
Auto Color Enable
When a checkmark is present, selecting a specific black level or drive to adjust will automatically enable the
corresponding color in the display. Delete the checkmark to see all colors, or to enable a different specific color
through the Color Enable control.
Clamp Location
Brightens the image produced from certain high-resolution high-frequency graphic sources. The projector
automatically selects the best clamp location for most sources. Use the normal Back Porch location if the
image is either sufficiently bright or overly bright. Select Sync Tip if the image appears unusually dim, if there
are horizontal streaks across the image, or if there is significant color drift. This moves the clamping pulse
from the normal back porch location (which is likely too short) to the tip of the horizontal sync pulse. Tri
Level is typically needed for an HDTV source.
Input Peak Detector
Input Peak Detector is a tool to assist with defining individual input levels, enabling you to accurately set the
input levels for any 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.
To adjust levels manually:
• Do not enable Auto Input Levels.
• To judge by eye and adjust levels manually, change one or more of the six levels as necessary to obtain
proper blacks and whites.
1. Display a 16-level greyscale test pattern from the desired external source, and check the Input Peak
Detector check box.
NOTE: The Input Peak Detector will initially render the greyscale as a uniform grey field before
adjustment or extreme crushing.
2. Check Auto Color Enable to ensure the correct color is displayed for each setting.
Entero RPMWU/RPMSP/RPMHD-LED01 User Manual
020-100367-05 Rev. 1 (06-2012)
Input Peak Detector on page
Section 3: Operation
3-46.
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