Accurate Technology Model 9, Installation Manual

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GLOSSARY
Input Memory >
A setup memory which is associated with a particular projector or switcher input.
Interface >
A device that accepts an input signal for display by the projector.
Interlace >
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 rate is too
low, the image may flicker depending on the image content.
Keypad >
A device, which allows the user to control projector settings and operation. There are four
different keypad types which may be used with the projector: built-in, IR remote, wired
remote, and presenter's. For more information about these keypads, refer to the keypads
entry in section 3.2,
Projector Basics.
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 installation. 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. Note: ACON is an optional
projector feature.
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 projectors which include the ACON
automatic convergence feature, 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.
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