Dell 7609WU manual Appendix Glossary

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Appendix: Glossary

Appendix: Glossary

ANSI LUMENS A standard for measuring the brightness. It is calculated by dividing a square meter image into nine equal rectangles, measuring the lux (or brightness) reading at the center of each rectangle, and averaging these nine points.

ASPECT RATIO The most popular aspect ratio is 4:3 (4 by 3). Early television and computer video formats are in a 4:3 aspect ratio, which means that the width of the image is 4/3 times the height.

Brightness— The amount of light emitting from a display or projection display or projection device. The brightness of the projector is measured by ANSI lumens.

Color Temperature— The color appearance of white light. Low color temperature implies warmer (more yellow/red) light while high color temperature implies a colder (more blue) light. The standard unit for color temperature is Kelvin (K).

Component Video—A method of delivering quality video in a format that consists of the luminance signal and two separate chrominance signals and are defined as Y'Pb'Pr' for analog component and Y'Cb'Cr' for digital component. Component video is available on DVD players.

Composite Video — A video signal that combines the luma (brightness), chroma (color), burst (color reference), and sync (horizontal and vertical synchronizing signals) into a signal waveform carried on a single wire pair. There are three kind of formats, namely, NTSC, PAL and SECAM.

Compressed Resolution— If the input images are of higher resolution than the native resolution of the projector, the resulting image will be scaled to fit the native resolution of the projector. The nature of compression in a digital device means that some image content is lost.

Contrast Ratio— Range of light and dark values in a picture, or the ratio between their maximum and minimum values. There are two methods used by the projection industry to measure the ratio:

1 Full On/Off — measures the ratio of the light output of an all white image (full on) and the light output of an all black (full off) image.

2 ANSI — measures a pattern of 16 alternating black and white rectangles. The average light output from the white rectangles is divided by the average light output of the black rectangles to determine the ANSI contrast ratio.

Full On/Off contrast is always a larger number than ANSI contrast for the same projector.

Glossary

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Contents Dell 7609WU Projector User’s GuideApril 2008 Rev. A00 Notes, Notices, and Cautions2 Connecting Your Projector ContentsProfessional Installation Options ContentsAdjusting the Projected Image 4 Troubleshooting Your ProjectorAdjusting Projection Image Size Using the On-Screen Display5 Specifications 6 Contacting Dell 7 Appendix Glossary Your Dell Projector Package ContentsYour Dell Projector CAUTION Safety Instructions About Your ProjectorConnecting Your Projector Connecting Your ProjectorConnecting a Computer Using a VGA Cable Connecting a ComputerPower cable RS232 cable Connecting a Computer Using a RS232 CableConnecting a Computer Using an Ethernet Cable 1 Power cable 2 Ethernet RJ45 cableNOTE The Ethernet RJ45 cable is not provided by Dell Power cable DisplayPort cable Connecting a Computer Using a DisplayPort CablePower cable VGA to VGA cable Monitor Loop-Through Connection Using VGA CablesConnecting a DVD Player Using an S-video Cable Connecting a DVD Player1 Power cable 2 Composite video cable Connecting a DVD Player Using a Composite CableConnecting a DVD Player Using a Component VGA to YPbPr Cable Power cable VGA to YPbPr cableInput Connecting a DVD Player Using a Component YPbPr to YPbPr Cable 1 Power cable 2 YPbPr to YPbPr cableNOTE The YPbPr to YPbPr cable is not provided by Dell Connecting a DVD Player Using an HDMI Cable 1 Power cable 2 HDMI cableNOTE The HDMI cable is not provided by Dell Installation for Driving Automatic Screen Professional Installation OptionsNOTE The 12V DC power cable is not provided by Dell The 12V DC power cable has to be connected to the DC 12V jackPower cable RS232 cable Commercial RS232 control box Connecting a Commercial RS232 Control BoxTurning Your Projector On Using Your ProjectorTurning Your Projector Off cause injury if touchedAdjusting the Projected Image Raising the Projector HeightLowering the Projector Height Adjusting the Projector Zoom and Focus Adjusting Projection Image Size 1 LAMP warning light Using the Control PanelIf the LAMP light is solid amber, replace the lamp See LAMP on pageKeystone Allows you to adjust the brightness and contrast Using the Remote ControlEnter Allows you to confirm a selected OSD optionMovie mode, sRGB, or CUSTOM mode for the between Presentation mode, Bright modeMain Menu INPUT SELECT Using the On-Screen DisplayAUTO-ADJUST SET UP Apply Change-Press Enter to confirm the settings PICTURE in PC Mode PICTURE in Video Mode DISPLAY in PC Mode DISPLAY in Video Mode PIP SETTINGS LAMP The Language menu allows you to set the language for the OSD LANGUAGEAUDIO SETTINGS-Press Enter to open the Audio Settings menu OTHERSVolume-Press to decrease the volume and to increase the volume 1 First time password input request d If the password verification is successful, you can resume accessing the projectors functions and its utilities Problem Troubleshooting Your ProjectorProblem continued Possible Solution continuedUse Test Pattern in the Others menu Possible Solution continued The OSD does not appear on Changing the Lamp CAUTION Lamp Disposal for the US only Specifications SpecificationsSpecifications DC jack 12 volt@200mA output, relay powering external devicescontrol for automatic projection screen controlConnection settings RS232 Pin Assignment RS232 ProtocolCommand types Control Commands ListPIP Combination Sources V. Frequency Hz Compatibility Modes Analog/DigitalH. Frequency KHz 70.11 Visit support.dell.com Contacting DellGlossary Appendix GlossaryDVI-D- Digital Visual Interface-Digital connector XGA- Extended Graphics Array- 1024 x 768 pixels count Index