Christie Digital Systems Ds+60 Users Manual
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Section 6: Specifications Christie DS+60 User’s Manual 6-5 IR remote keypad (with batteries) Wired remote control cable Line Cords (North American and European) Computer cable (Dsub15 to DVI-I) DVI-I cable S-video cable User’s Manual Kore 10-bit Librarian for downloading new software Ceiling Mount Stacking Kit Shipping Case Service manual Lenses (SXGA+) 0.8:1 fixed (38-809082-01) 1.2:1 fixed (38-809083-01) 1.3-1.7:1 zoom (38-809084-01) 1.7-2.5:1 zoom (38-809085-01) 2.5-4.0:1 zoom (38-809086-01) 4.0-7.0:1 zoom (38-809087-01) Optional Input Modules RGB500 Input Module RGB400 Active Loop-Through Input Module RGB400 Buffered Amplifier Input Module PC250 Analog Input Module Serial Digital Input Module DVI/DFP Input Module Dual SD/HD-SDI Module Standard Components Optional Accessories
Appendix A Glossary Christie DS+60 User’s Manual A-1 This appendix defines the specific terms used in this manual as they apply to this projector. Also included are other general terms commonly used in the projection industry. The time, inside one horizontal scan line, during which video is generated. The ability of a screen to reflect ambient light in a direction away from the line of best viewing. Curved screens usually have good ambient light rejection. Flat screens usually have less ambient light rejection. The video output of most computers and videotape machines. Analog video can generate a large number of colors. Having or requiring a linear distortion, generally in the horizontal direction. Anamorphic lenses can restore a ‘scope’ (CinemaScope) or ‘flat’ format film frame to the correct wide-screen appearance by increasing its horizontal proportion. The American National Standards Institute is the organization that denotes the measurement standard for lamp brightness. The ratio of the width of an image to its height, such as the 4:3 aspect ratio common in video output. Can also be expressed as a decimal number, such as 1.77, 1.85 or 2.39. The larger the ratio or decimal, the wider and “less square” the image. The ability of the projector to automatically recognize and synchronize to the horizontal and vertical scan frequencies of an input signal for proper display. The frequency range of the projectors video amplifier. The speed (bits-per-second) at which serial communications travel from their origin. The time inside one scan line during which video is not generated. The blanking time of the input signal must be equal to or greater than the retrace time of the projector. In projection, brightness usually describes the amount of light emitted from a surface such as a screen. It is measured in foot-lamberts or candelas per square meter. Unit of measure for measuring intensity of light. A collection of measurements stored by the projector for a given input source, including frequencies, pulse width, polarity, syncs, channel number and location, user- adjustable display settings, etc. Use channels to switch between a variety of setups quickly, automatically recalling previously defined display parameters. A list/menu of previously-defined channels available in projector memory. Active Line Time Ambient Light Rejection Analog Video Anamorphic ANSI Aspect Ratio Auto Source Bandwidth Baud Rate Blanking Time Brightness Candela or Candle Channel Channel List
Appendix A: Glossary A-2 Christie DS+60 User’s Manual A number that uniquely identifies a specific channel retained in projector memory. The projector can retain up to 99 channels. A menu item that indicates whether an option is currently in effect (checked) or not (unchecked). The signal representing the color information (hue and saturation) when the image is represented as separate chrominance and luminance. Same as “chroma”. The range of colors allowed in a specific system, as defined within a triangular area located on the CIE color locus diagram whose corners are the three primaries defined in the system. Also known as color space. A change in the tint of a white field across an image. The coloration (reddish, white, bluish, greenish, etc.) of white in an image, measured using the Kelvin (degrees K) temperature scale. Higher temperatures output more light. An optical component, the color wheel is made up of red, green and blue and sometimes white segments. The light generated by the lamp is sequentially filtered by the color wheel (as it’s spinning) into R, G, B color primaries and passed to the DMD which then creates an image for each color. See YCbCr or YPbPr. The output of video tape players and some computers, characterized by synchronization, luminance and color signals combined on one output cable. The degree of difference between the lightest and darkest areas of the image. The alignment of the red, green, and blue elements of a projected image so that they appear as a single element. A projection screen which is slightly concave for improved screen gain. Curved screens usually have screen gains, which are greater than 1 but viewing angles much less than 180 °. Curved screens are not recommended for use with this projector. The Display Data Channel VESA standard enables communication between PCs and monitors, and is based on E-EDID protocol. A “direct digital interface” signal can be supplied to the projector via an optional digital input module installed in INPUT 5. For example, you can input an SMPTE- 259M signal using a Serial Digital Input Module or input an SMPTE-272M signal from a Digital HDTV Serial Input Module. Digital Micromirror Devices used in this projector for processing red, green, and blue color data. Located at INPUT 3 and INPUT 4, this device converts NTSC 3.58, NTSC 4.4, PAL, PAL-N, PAL-M, or SECAM to RGB video. The sharpness of a display from a video source. Channel Number Checkbox Chrominance Color Gamut Color Shift Color Temperature Color Wheel Component Video Composite Video Contrast (ratio) Convergence Curved Screen DDC DDI DMD Decoder Detail
Appendix A: Glossary Christie DS+60 User’s Manual A-3 A type of rear-projection screen which spreads the light striking it. Screen gain is less than 1 but audience viewing angles are increased. An adjustment that affects the display of an image. Such display settings include contrast, brightness, tint, blanking, size, offsets, and others. The maximum frequency of the pixel clock. Also known as pixel clock rate. The Enhanced Extended Display Identification Data standard, established by VESA, enables properties (such as resolution) of a display device to be detected by the display card in a controlling device such as a PC. The PC, in turn, can then output in a matching format to fill the display. Some sources used with the projector are VESA E- EDID reported. A very rapid variation in image brightness caused by a frame rate that is too slow. (See Interlace) See also Lamp Flicker. The intensity of visible light per square foot. The luminance (brightness) which results from one foot-candle of illumination falling on a perfectly diffuse surface. The frequency at which complete images are generated. For non-interlaced signals, the frame rate is identical to the vertical frequency. For interlaced signals, the frame rate (also known as field rate) is one half of vertical frequency. The ability of a screen to direct incident light to an audience. A flat matte white wall has a gain of approximately 1. Screens with gain less than 1 attenuate incident light; screens with gain more than 1 direct more incident light to the audience but have a narrow viewing angle. For example: An image reflecting off a 10 gain screen appears 10 times brighter than it would if reflected off a matte white wall. Curved screens usually have larger gain than flat screens. General Purpose Input Output, used for remote control of a limited number of programmable functions by direct signal or dry-contact connection. High-definition Television (1035, 1080 and 1125 lines interlace, and 720 and 1080 line progressive formats with a 16:9 (i.e. 1.77) aspect ratio. A display of help information regarding the current task or presentation. The frequency at which scan lines are generated, which varies amongst sources. Also called horizontal scan rate or line rate. The difference between the center of the projected image and the center of the projector lens. For clarity, offset is often expressed as the maximum amount of the image that can be projected to one side of the lens center without degrading the image quality. Horizontal offset ranges can be affected by the type of lens in use, and whether or not the image is offset vertically at the same time. A circular area of a screen where the image appears brighter than elsewhere on the screen. A hot spot appears along the line of sight and moves with the line of sight. High gain screens and rear screens designed for slide or movie projection usually have a hot spot. Diffused Screen Display Setting Dot Clock E-EDID Flicker Foot-candle Foot-lambert Frame Rate Gain or Screen Gain GPIO HDTV Help Text Horizontal Frequency Horizontal Offset Hot Spot
Appendix A: Glossary A-4 Christie DS+60 User’s Manual A physical connection route for a source signal, described by a 2-digit number representing 1) its switcher/projector location and 2) its slot in the switcher/projector. Signal sent from a source device to the projector. A device, such as the Serial Digital Input Module, that accepts an input signal for display by the projector. A method used by video tape players and some computers to double the vertical resolution without increasing the horizontal line rate. If the resulting frame/field rate is too low, the image may flicker depending on the image content. A small push-button device for controlling most projector settings and operation. For more information, refer to 3.3, Using the Keypad. A distortion of the image which occurs when the top and bottom borders of the image are unequal in length. Side borders both slant in or out, producing a “keyhole” shaped image. It is caused when the screen and lens surface are not parallel, or (in “X” models) by poor Keystone adjustment. The reproduction of the horizontal and vertical size of characters and/or shapes over the entire screen. When light from a projector is incident on a screen, the light reflects from the screen such that the angle of reflection equals the angle of incidence. The Line of Best Viewing is along the line of reflection. The method of feeding a series of high impedance inputs from a single video source with a coaxial transmission line in such a manner that the line is terminated with its characteristic impedance at the last input on the line. The unit of measure for the amount of visible light emitted by a light source. The signal representing the measurable intensity (comparable to brightness) of an electronic image when the image is represented as separate chrominance and luminance. Luminance also expresses the light intensity of a diffuse source as a function of its area; measured in lumens or candles per square foot (1 lumen per square foot = 1 footlambert). SMPTE RP 98 calls for a luminance of 12 to 22 footlamberts for theatre screens. See: Foot-lambert. The amount of visible light per square meter incident on a surface. 1 lux = 1 lumen/square meter = 0.093 foot-candles A list of selectable options displayed on the screen. A video output format of some video tape and disk players. There are two types of NTSC (National Television Standards Committee) video: NTSC 3.58 and NTSC 4.43. NTSC 3.58 is used primarily in North America and Japan. NTSC 4.43 is less commonly used. Commonly called an iris, the optical aperture when adjusted affects true contrast. A type of rear-projection screen which re-directs light through the screen to increase image brightness in front of the screen. Screen gain is usually greater than 1 but audience viewing angles are reduced. Input Input Signal Interface Interlace Keypad Keystone Linearity Line of Best Viewing Loopthrough (Loopthru) Lumen Luminance Lux Menu NTSC Video Optical Aperture Optical Screen
Appendix A: Glossary Christie DS+60 User’s Manual A-5 PAL (Phase Alternating Line) video is a 50 Hz standard with 768 x 576 resolution. It is found on some video tape and disk players (used primarily in Europe, China and some South American and African countries). The smallest discernible element of data from a computer-generated image. The phase of the pixel sampling clock relative to incoming data. The frequency of the pixel sampling clock, indicated by the number of pixels per line. The projector is at presentation level when an image from a source is displayed without the presence of a slidebar, menu, pull-down list, or error message. The distance between the projectors front feet centers and the screen. Also called Throw Distance”. The type of code format called “A” or “B” utilized by the remote keypad(s). The default protocol set at manufacture is Protocol “A”. By using two different keypad protocols, adjacent projectors can be controlled independently with their remote IR keypads. A selectable menu item that unfolds into a list of options pertaining to it. A manufacturer of a digital video recorder/player/server, QuBit, frequently used for providing digital cinema data. QuVis image compression uses a proprietary technology called Quality Priority Encoding, based on wavelets, in which the user selects a quality level based on signal-to-noise ratio. The data rate varies to efficiently maintain that quality level. Frames are coded individually. A translucent panel for screen projection. Incident light travels through the incident surface of a rear screen and forms an image on the other surface. The ability to manipulate through software commands the physical size, placement and/or aspect ratio of an image. The maximum number of alternate white and black horizontal lines that can be distinguished on a screen when a photographic target is placed between the lens and a light source and illuminated by that source. The maximum number of pixels that the projector can display horizontally and vertically across an image, such as 1024 x 768 (called XGA). The time required by the video amplifier of the projector to increase its output from 10% to 90% of the maximum value. The video output (analog or digital) of most computers. Analog RGB video can have 3, 4, or 5 wires — one each for red, green, and blue, and either none, one or two for sync. For three-wire RGB, the green wire usually provides sync. (See TTL Video). A common asynchronous data transmission standard recommended by the Electronics Industries Association (EIA). Also called serial communication. A less common asynchronous data transmission standard in which balanced differential voltage is specified. RS-422 is especially suited to long distances. PAL Video Pixel Pixel Phase Pixel Tracking Presentation Level Projector-to-Screen Distance Protocol Pull-down List QuVis Rear Screen Resizing Resolution (lens) Resolution (projector) Rise Time RGB Video RS-232 RS-422
Appendix A: Glossary A-6 Christie DS+60 User’s Manual The output from certain video tape players and video equipment. S-Video separates sync and luminance from color information, typically producing a higher quality display than composite video. The horizontal or vertical frequency at which images are generated. Also known as scan rate or refresh rate. One horizontal line on the display. The horizontal or vertical frequency at which images are generated. A video output format of some video tape and disk players (used primarily in France). SECAM (Sequential Couleur á Mémoire) signals are similar in resolution and frequency to PAL signals. The primary difference between the two standards is in the way color information is encoded. A slidebar is a graphical display of an adjustable setting. The numerical setting often represents a percentage but can be a specific unit such as degrees Kelvin. The device, such as a computer or VCR, connected to the projector for display. A source may have numerous corresponding channels defined and recognized by the projector. See Input. See Channel. A signal selector that can be connected to a projector for the purpose of adding more sources. This term refers to the part of the video signal that is used to stabilize the picture. Sync can occur in three forms: 1) Composite sync: the horizontal and vertical components are together on one cable. 2) Sync-on-green: the sync is part of the green video. 3) Separate sync or H.SYNC and V.SYNC: the horizontal and vertical components of the sync are on two separate cables. The duration of each sync pulse generated by a computer. The sync width is part of the blanking time. A type of RGB video with digital characteristics. A wire connecting a single video source to a display device, such as a projector, must be terminated by a resistance (usually 75Ω for video). The distance between the front feet of the projector and the screen. Also called Projector-to-Screen Distance”. Always use the correct Christie throw distance formula to calculate the proper throw distance (±5%) required for your lens. Throw ratio = throw distance / screen width. Typically used to differentiate lenses. Balance of red-to-green necessary for realistic representation of NTSC signals. The ability of a projector to synchronize to inputs with frequencies within a specified range. S-Video Scan Frequency Scan Line Scan Rate SECAM Slidebar Source Source Setup Switcher Sync Sync Width TTL Video Terminated Throw Distance Throw Ratio Tint Variable Scan
Appendix A: Glossary Christie DS+60 User’s Manual A-7 The frequency at which images are generated. Vertical frequencies vary amongst sources. Also called vertical scan rate. The difference between the center of the projected image and the center of the projector lens. For clarity, offset is often expressed as the maximum amount of the image that can be projected above or below the lens center without degrading the image quality. Vertical offset ranges depend on the type of lens in use, and whether or not the image is offset horizontally at the same time. The signal that is used by display devices (such as projectors) to generate an image. This term also refers to the output of video tape/disk players and computers. An optional device that converts NTSC 3.58, NTSC 4.4, PAL, PAL-N, PAL-M or SECAM to RGB video. A specific type of video signal, such as NTSC, PAL, SECAM. This projector can automatically recognize and interpret the incoming standard and display accordingly. Screens do not reflect equally in all directions. Most light is reflected in a conical volume centered around the line of best viewing. Maximum brightness is perceived if you are within the viewing cone defined by the horizontal and vertical viewing angles. The color temperature of white used by the projector. White Boost is an option that enables the recapture of some of the lost light from the transition between each segment in the color wheel. The area of an image that is white only. For example, a full white field is an image that is white everywhere. A 10% white field is a white area (usually rectangular) that occupies 10% of the image; the remaining 90% is black. A high-end digital component video signal. A high-end analog component video signal. Sometimes called YUV, Component, or Y, R-Y, B-Y, the YPbPr signal by-passes the video decoder in this projector. See YPbPr. The adjustment of image size by means of a zoom lens. Vertical Frequency Vertical Offset Video Video Decoder Video Standard Viewing Angle White Balance White Boost White Field YCbCr YPbPr YUV Zoom