Mirage 2000 User Manual page 135

GLOSSARY
Loopthrough
(Loopthru)
Lumen
NTSC Video
Optical Screen
PAL Video
Pincushion
Pixel (picture element)
Pixel Phase
Pixel Tracking
Presentation Level
Projector-to-Screen
Distance
Protocol
Pull-down List
Rear Screen
Resizing
Resolution (lens)
A-4
Mirag2000/4000/600000 User's Manual
'
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.
Lux
'
The amount of visible light per square meter incident on a surface.
1 lux = 1 lumen/square meter = 0.093 foot-candles
Menu
'
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.
'
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.
'
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).
'
A distortion of the image shape characterized by concave or convex borders.
'
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 projector's 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 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.