Christie Digital Systems CX60, CX50, CX67 user manual Black Levels & Input Drives

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Section 3: Operation

BLACK LEVELS & INPUT DRIVES

An experienced user can manually adjust the black levels and input drives for a source that exhibits high black levels. By adjusting the slidebars here, you can refine the image source input levels. NOTE: Input levels are of limited use with digital signals.

To check an image and manually adjust black levels and input drives:

1.Make sure overall Contrast and Brightness (in Image Settings) are both set close to mid-range.

2.Check the color temperature setup using an external 16-step grey scale test pattern with black on the left and white on the right.

3.Make sure you are using an analog source – input levels are not applicable for digital sources or sources going through a decoder.

4.If the blacks and/or whites of an image appear okay, input levels do not need adjustment. If the 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.Initialize Auto Input Levels and wait for all 6 values to stabilize. Alternatively, do not use the Auto Input Levels option and instead reduce black levels manually. Judge by eye and change one or more of the six levels as necessary to obtain proper blacks and whites.

IMPORTANT

Do not use Input Levels to adjust color temperature. This will distort Contrast and Brightness settings as well as Color Temperature.

3-16 RPMX/CX50/CX60/CX67 User’s Manual

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Contents Table of Contents Introduction Key FeaturesFor detailed product specifications, see Section Components Vertical configurationHow the projector works For Rpmx For CX50/CX60/CX67Purchase Record Purchase Record and ServicingPage Connections Source SetupSource Analog VGA Connector Source Setup Video Loop Through Composite Video Loop ThroughSerial Port Connections If using a computer Single Projector10. Multiple Projector RS-232 Connection Requirements Power ConnectionPage Projection Head Module OperationProjector Overview Normal LED Status Keypad Commands Using the KeypadFAN LED will no longer be illuminated Refer to 3.7 Using Multiple Projectors for more details Accessing the Main Menu Adjusting SlidebarsTo save or Exit to Adjusting an ImagePresentation OptionsSize and Position Menu Resize PresetsNo Resizing Tiled Resize PresetsPixel Tracking SizeVert Stretch Position Pixel phaseBrightness Color SetupContrast 12. Gamma options Video Options 13. Creating a Custom Color Temperature15. Input Video Black Input Levels for experienced users onlyBlack Levels & Input Drives Input Select Mode Memory StatusWhite Boost Language Image OrientationCommunication Menu Preference25. Assigning Projector ID Tiling SetupColor and Uniformity 27. Expanded Options in Resize PresetsDiagnostics & Service Lamp Menu Choosing a Lamp PowerOptimizes Sets to Default System Status Auto SetupProjectors Using MultiplePreliminary Setup When matching screens in a display wall, do the followingDefining the Size Display WallAdjust Color Temperature Enable Primary Color AdjustmentPrimary Color Adjustment Status LED Codes Error CodesError, Lamp shut off DMD errorLamp strike failure Lamp failure, BallastPage Maintenance Attachments Power cordCleaning and Maintenance Lamp ReplacementReplacing Keypad BatteriesRemove the lamp Access the lamp moduleSee also, 3.4 The Lamp Menu in Section Install a new lampClose lamp door and record new lamp serial number For Rpmx 38-GFX101-01, CX67 38-GFX005-01 Figure Projection Lens FocusSymptom TroubleshootingProjector does not power on when the Power key is pressed Projector is on, but no image is displayedSymptom The display has suddenly frozen… Symptom The display is jittery or unstable…Display is faint… Display is reversed and/or upside down…Display is noisy… Display is not sharp or clean…Colors in the display are inaccurate… Specifications Picture Offset Adjustment Range Range of Motion Control Signal Infrared IR Control InputDVI Input RS-232Viewing Angle Power RequirementsLamps LensSize includes lens, adjuster and mounting rails Weight including adjusterFor RPMX-100U 38-GFX101-01 For RPMX-100UFor RPMX-100U 38-GFX003-xx For CX50-100UFor CX60-100U 38-GFX004-xxRegulatory Compliance ANSI/UL 60950 3rd Edition For CX67-100U38-GFX006-xx Specifications Glossary Display Setting Color TemperatureCheckbox Color ShiftHelp Screen Input SignalHorizontal Frequency Horizontal OffsetResolution lens Pixel PhaseResolution projector Ntsc VideoSwitcher Source SetupRGB Video RS-422Vertical Frequency Variable ScanVertical Offset Video DecoderAcceptable Signal Types Acceptable RGB Input Signal Timing RPMX/CX50/CX60/CX67 User’s Manual B-3 Page Keypad Reference Page Serial Communication Cables Page Menu Tree Page About IndexInput Levels Power Level Switching Pixel Phase