Projector Christie Roadie 25k User Manual

							GLOSSARY 
 
Roadie 25K User’s Manual A-7 
The phase in film-making that occurs primarily after production ends; its processes 
include picture editing, sound effects editing and mixing, ADR, Foley, titles and 
opticals, dubbing and print mastering, CGI and visual effects, and scoring. Post 
production culminates in acceptance of the original negative answer print. Even 
though post production officially begins on the last day of principal photography, 
post production facilities such as editing are utilized from very early in the 
production phase in order to save time. 
The distance between the projectors front feet centers and the screen. More 
commonly known as Throw Distance”. 
Shifting the frequency, sample rate, or frame rate to as to achieve a target frequency 
or time relationship with another signal, most commonly by +/- .1%–the ratio of 
NTSC to B&W TV frame rates. See: 3:2 pulldown. 
A selectable menu item that unfolds into a list of options or choices. 
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. Rarely used for 
cinema applications. 
Composite positive motion picture prints, generally made from internegatives, 
intended for distribution to exhibitors. 
The ability to manipulate the physical size, placement and/or aspect ratio of an 
image. Also called scaling. 
The maximum number of pixels that the projector can display horizontally and 
vertically across an image, such as 1400 x 1050 (SXGA+) or 2048 x 1080. 
The minimum time required for a CRT projector to move the position of the scanning 
spot from the right edge to the left edge. 
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). A type of serial communication. 
A less common asynchronous data transmission standard in which balanced 
differential voltage is specified. RS422 serial communication is especially suited to 
long distances. 
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. Also known as Y/C. 
The horizontal or vertical frequency at which images are generated. Also known as 
scan rate or refresh rate.   Post Production 
 Projector-to-Screen 
 Distance 
 Pull U
p (Pull Down) 
 Pull-down List 
 QuVis 
 Rear Screen 
 Release Print 
 Resizing 
 Resolution 
 Retrace Time 
 (Horizontal) 
 RGB Video 

 RS232 
 RS422 
 S-Video 
 Scan Frequency  
						

							GLOSSARY 
A-8 
Roadie 25K User’s Manual 
One horizontal line on the display. 
A video output format of some video tape and disc 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 small file consisting of automation cues in addition to a play list, triggering theatre 
events (action data), and possibly including parameters that allow the program to be 
tailored for a specific venue or engagement. A show script is created by the exhibitor 
or installer and provides automated presentations. Automation available 2005. 
The device (such as a server) connected to the projector for supplying incoming data.  
See Channel. 
A signal selector such as the Marquee Signal Switcher formerly manufactured by 
Christie that can be connected for adding more sources to a projector. 
The part of the video signal that stabilizes 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 75S for video). 
The distance between the front bezel 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. 
Transition Minimized Differential Signaling is the basis for DVI (Digital Visual 
Interface).  
The Unicode method of encoding produces a very large character set typically 
required for ASCII messaging in non-Western languages such as Chinese, Russian, 
etc. In unicode, every number (code) is unique to a single character. Menu functions 
can be executed remotely via unicode or non-unicode (default) messaging—this is 
auto-detected. See also non-unicode. 
The ability of a projector to synchronize to inputs with frequencies within a specified 
range.   Scan Line 

 SECAM 
 Show Script 
 Source 
 Source Setup 
 Switcher 
 Sync 
 Sync Width 
 TTL Video 
 Terminated 
 Throw Distance 
 Throw Ratio 
 Tint 
 TMDS 
 Unicode 
 Variable Scan  
						

							GLOSSARY 
 
Roadie 25K User’s Manual A-9 
The frequency at which images are generated or “output”. Vertical frequencies vary 
amongst sources. Also known as 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 percentage of the 
image that can be projected above or below the lens center without degrading the 
image quality. 
The Video Electronic Standards Association establishes standards of communication 
between electronic components to help ensure universal compatibility. 
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. 
A module that converts NTSC 3.58, NTSC 4.4, PAL, PAL-N, PAL-M or SECAM to 
RGB video. An 8-bit video decoder is standard in this projector. 
A specific type of video signal, such as NTSC, PAL, SECAM. 
Screens do not reflect equally in all directions. Instead, 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. 
Data embedded in essence that serve different purposes and that are either 
imperceptible or obvious, robust or fragile. Their usual purpose is for legal support of 
copyright, and they may also be components of copy control schemes. 
The color temperature of white used by the projector. 
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 video decoding. 
See YPbPr. 
The adjustment of image size by means of a zoom lens.   Vertical Frequency 
 Vertical Offset 
 VESA 
 Video 
 Video Decoder 
 Video Standard 
 Viewing Angle 
 Watermark 
 White Balance 
 White Field 
 YCbCr 
 YPbPr 
 YUV 
 Zoom  
						

							Appendix B 
Remote Keypad  
 
 Roadie 25K User’s Manual B-1 
 
 
Figure B.1. Standard Remote Keypad  
						

							Appendix C 
Serial Communication Cables 
 
  Roadie 25K User’s Manual C-1 
FOR GENERAL COMMUNICATIONS: A serial link of RS232 or RS422 enables ASCII 
communication with the projector so that it can be controlled remotely from a PC or 
other controller. From a PC, connect a standard 9-wire RS232 serial cable to the 
RS232 IN port located on the side of the projection head. Or, for long-distance (>100 
ft.) links with an RS422-compatible PC or controller, connect RS422 cable to an 
RS422 port located on the side or rear panel of the projection head. 
FOR SOFTWARE DOWNLOADS: Downloading new software to the projector requires 
RS232 or RS422 connected to the 9-pin connectors on the side of the projector 
only—do not download using either of the 6-pin XLR RS422 ports located at the rear 
of the projector. 
 NOTE  
Using a rear RS422 port (3-pin XLR) or Ethernet link for 
downloading new software to the projector is not
 supported. 
RS422 CONNECTIONS: Depending on your RS422-compatible device or RS232-
RS444 converter, the cabling wiring can vary, and may require a custom cable. 
 
 
 
    Serial Links to Pro
jector  
						

							SERIAL COMMUNICATION CABLES 
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							SERIAL COMMUNICATION CABLES 
 
Roadie 25K User’s Manual C-3