Christie CS50-D100U, Руководство пользователя

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OPERATION
RPMS, CS50 & CS70-D100U/UF User’s Manual
3-31
prefer to use the Input Levels menu (see Figure 3.15). These adjustments, which are
actually a calibration process to compensate for differences in sources and cabling,
enables an experienced user to perfect the source image input levels. Note that input
levels are of limited use with digital signals, but offer some ability to tweak poorly
mastered source materials.
AUTO INPUT LEVEL –
Keep Off for virtually all sources (default). Temporarily enter a
checkmark only if you are an experienced user and you have an unusual source that
you feel needs further color temperature and/or input level adjustment. After entering
a checkmark, wait for the six values to stabilize, then delete the checkmark and exit.
BLACKLEVELS AND DRIVES -
To check your image and adjust these controls:
1. Make sure overall Contrast and Brightness are both set to near 50. NOTE: Not
required for Auto adjustment.
Cont
= 50 (approx.)
Bright
= 50 (approx.)
2. Check the color temperature setup using an internal grayscale test pattern,
adjusting as desired to obtain a neutral grayscale. NOTE: Not required for Auto
adjustment.
3. Make sure you are using an analog source not connected to
INPUT 3
or
INPUT 4
,
as input levels are not applicable for digital sources or sources going through the
decoder. A grayscale is recommended.
4. If the blacks and/or whites appear okay, 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 7.
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.
CLAMP TIP –
This option (full name sync tip clamping) can brighten the image
produced from certain high resolution, high frequency graphic sources. Enter a
checkmark if the image appears unusually dim, if there are horizontal streaks across the
image, or if there is significant color drift. Delete the checkmark if the image is either
sufficiently bright or overly bright.
NOTE: The sync tip clamping option is not used for video sources or any RGB source
with sync information on the video (e.g., sync-on-green).
COLOR ENABLE –
Use this option to select which color or colors you want to see.
This is useful while working with color temperature white levels or input levels.