Electrohome VistaGRAPHX 10K, Руководство пользователя

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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.
A display of help information on the projection screen.
The frequency at which scan lines are generated, which varies amongst sources.
Also called horizontal scan rate or line rate.
The difference between the horizontal position of the projector lens and the
center of the lens.
A circular area of a screen where the image appears brighter than elsewhere on
the screen. The hot spot always 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.
The Vista
GRAPHX
Intelligent Lens System
®
describes the ability to automatically
return to lens settings previously defined for a particular channel.
A physical connection route for a source signal, described by a 2-digit number
representing 1) its switcher/projector location and 2) its slot.
Signal sent from a source device to the projector.
A device, such as VDI, 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 rate
is too low, the image may flicker depending on the image content.
A small push-button device for controlling 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
keystone shaped image.
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 amount of visible light emitted by a light source is measured in lumens.
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