Christie Roadster S+ User Manual page 69

Temporarily enter a checkmark only if you are an experienced
AUTO INPUT LEVEL –
user and you have an unusual source that you feel needs further color temperature
and/or input level adjustment. This compensates for incoming out-of-range drives
(white) and blacklevels (black) that would cause "crushing" of light and dark colors
in the image. After entering a checkmark, wait for the six slidebar values to stabilize,
then delete the checkmark and exit. The Auto Input Level is automatically turned off
upon exit from the Input levels Menu.
BLACKLEVELS AND DRIVES –
1. Make sure overall "Contrast" and "Brightness" settings are both set to
near 50.
NOTE: Not required for "Auto" adjustment.
•
Contrast
•
Bright
2. Check the color temperature setup using an internal grayscale test
pattern, making sure to obtain a neutral grayscale. NOTE: Not required
for "Auto" adjustment.
3. Confirm that you are using an analog source not connected to
, as Input Levels are not applicable for digital sources or sources
INPUT 4
going through the decoder. A grayscale is recommended.
4. If the blacks and/or whites appear OK, input levels do not need
adjustment. If black levels are too high (and/or whites are too low, which
is rare), you likely have a noisy source that is producing skewed input
levels. Continue with Step 5.
5. Temporarily enable "Auto" in the Input Levels submenu. Wait for all 6
values to stabilize. Alternatively, do not use "Auto"—reduce blacklevels
manually instead. Judge by eye and change one or more of the six levels
as necessary to obtain proper blacks and whites. You may want to see
only a certain color while adjusting—use the "Color Enable" option
(described below).
6. Delete the "Auto" checkmark and leave the Input Levels menu.
IMPORTANT: Do not use Input Levels to adjust color temperature. This will
distort Contrast and Brightness functions as well as color temperature.
AUTO COLOR ENABLE –
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.
This option (formerly known as sync tip
CLAMP LOCATION –
clamping) can brighten the image produced from certain high-
resolution high-frequency graphic sources. For almost all sources,
the projector automatically selects the best clamp location. 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.
To check your image levels and adjust these controls:
= 50 (approx.)
= 50 (approx.)
When a checkmark is present, selecting a specific blacklevel
Roadster/Mirage S+ User's Manual
OPERATION
or
INPUT 3
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