Knoll Systems LED1081 user manual Fine Sync Sub-Menu

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•Fine Sync: To fine-tune the position and other image attributes, choose Fine Sync from the ADVANCED menu and press ENTER. This displays the Fine Sync sub-menu, shown in Figure 4-18.

Figure 4-18: Fine Sync Sub-Menu

•V Position: This control adjusts the vertical position of the image within the designated image area, up to 25 per- cent of the image height up or down.

•H Position: This control adjusts the horizontal position of the image within the designated image area, up to 25 percent of the image width left or right.

•Phase (RGB or Component sources): This control adjusts the phase of the pixel sampling clock relative to the incoming signal. Adjust the phase when an RGB or Component image still shows shimmer or “noise” after Tracking has been optimized.

Adjust the Phase after adjusting Tracking (see below). If some shimmer from a video or HDTV

Tip source persists, use the Noise Reduction controls (described on page 44) to remove high-frequency noise from the signal.

For best results, use a good test pattern such as a smooth gray consisting of a clear pattern of black and white pixels, or a similar “half on, half off” graphic image. Adjust the slidebar until the image stabilizes and each pixel is clearly defined. You may notice that you can stabilize the image at more than one point. Use either setting in such cases.

•Tracking (RGB or Component sources): Tracking determines the frequency of the pixel sampling clock, indicat- ed by the number of incoming pixels per line, so that all pixels generated by a particular source are sampled. Steady flickering or several soft vertical stripes or bands across the entire image indicates poor pixel tracking. Proper pixel tracking helps ensure that the image quality is consistent across the screen, that aspect ratio is maintained and that pixel phase (see above) can be optimized.

•Sync Level (Component sources only): Select Sync Level to adjust the voltage level of the LED1081 Sync signal detection circuitry.

Sync Level adjustment is occasionally necessary when a DVD player or HDTV source signal drops “below black” (for example, during scenes with explosions or when subtitles are present) and causes the projector to temporarily lose sync. If the Sync Level from the source is persistently too low, the projector won’t sync with the source at all.

The range is from 50 to 256 millivolts (mV) inclusive. The default setting is 240 mV and should rarely require ad- justment.

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Contents Projector Table of Contents Maintenance and Troubleshooting About this manual Copyright InformationCopyright DisclaimerImportant Safety Instructions FCC Part Textual and Graphic Conventions IntroductionAbout This Manual Target AudienceUsing This Manual If you needTurn to Key Features and Benefits Description, Features and BenefitsParts List Additional Features of the LED1081LED1081 at a Glance Controls and FunctionsLED1081 Top/ Rear/ Bottom View Component LED1081 I/O PanelSource LED10801 Key PadCONT, BRIGHT, Sharp LED1081 Remote ControlRemote Control InstallationIR Reception Angles Advantages Considerations Installation ConsiderationsInstallation Type Ambient LightEstimated Throw Distance Throw DistanceVertical and Horizontal Position Floor InstallationOther Considerations Folded OpticsVertical Lens Shift Lens Shift15H Ceiling Mounting Inverted Adjusting the Projection AngleMounting the LED1081 Floor Mounting UprightConnections to the LED1081 Connecting Source Components to the LED1081RGB Connections Component Video Connections 10 Composite and S-Video Connections 11 RS-232 Control System Connection RS-232 Controller ConnectionConnecting to AC Power Connecting an External IR ReceiverChanging the OSD Language Turning on the PowerAdjusting the Picture Orientation Ceiling ModeLens Adjustments FocusZoom Vertical Lens Shift Horizontal Lens Shift Selecting An Input Source Using the On-Screen MenusOperation Selecting an Aspect RatioLED1081 OSD Menu Structure General PIP PIP Split Mode Memory Sub-Menu Image Aspect Ratio Settings Below Black Above Black 10 Typical Gray Bar Pattern for Adjusting Contrast 12 Typical Test Pattern for Adjusting Sharpness 13 Noise Reduction Sub-Menu 14 Overscan Examples 15 HSG Sub-Menu Advanced OperaTion 4 17 RGB Adjust Sub-Menu 18 Fine Sync Sub-Menu Setup Trigger commands are deactivated when a PIP source is active Info TroubleshootingMaintenance Cleaning the Intake and Exhaust VentsCleaning the Air Vents Symptom Possible Causes Solution Troubleshooting TipsSerial Interface Specifications Transfer SpecificationsSpecifications IR Codes and Keynames Remote Button Description RS-232 CommandsIR Codes and Keynames Operation Command Values Function Command Action on unit= RGB = PBP = LED Operations Commands LED1081 Specifications OpticsElectrical Mechanical Standard AccessoriesShows the LED1081 dimensions, in millimeters LED1081 DimensionsSupported Timings Sdtv Projection Distance and Screen Size Specifications Specifications Specifications
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