Madrigal Imaging MP-9 - Manual (Page 115)

Keystone
➤
A distortion of the image which occurs when the top and bottom borders of
the image are not equal in length. Side borders slant in or out, producing a
keystone shaped image.
Learn Screen
➤
An ACON function which stores screen position data in memory for future
reference. Learn Screen is usually performed only once per projector installa-
tion. If the ACON Locator Assembly or screen is moved (i.e., the projector
installation changes to ceiling mount), the Learn Screen function must be
repeated.
Linearity
➤
The reproduction of the horizontal and vertical size of characters and/or
shapes over the entire screen.
Line of Best
➤
Viewing
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.
Locator Assembly
➤
The Locator Assembly, situated on the front of the projector, is the "eye"
of the ACON system. It includes a photosensor/lens component which
mechanically scans the projected display at each convergence point while
sensing relative positions of each projected color.
Loopthrough
➤
(Loopthru)
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.
Lumen
➤
The amount of visible light emitted by a light source is measured in lumens.
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 options which are displayed on the screen for selection by the user.
NTSC Video
➤
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.
GLOSSARY
A.5