Electrohome VistaGRAPHX 10K, User Manual

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This appendix defines the specific terms used in this manual as they apply to Vista
GRAPHX
10K. Also included
are other general terms commonly used in the projection industry.
The time, inside one horizontal scan line, during which video is generated.
The ability of a screen to reflect ambient light in a direction away from the "line
of best viewing". Curved screens usually have good ambient light rejection. Flat
screens usually have less ambient light rejection.
The video output of most computers and video tape machines. Analog video can
generate a large number of colors.
The ratio of the width of an image to its height, such as the 4:3 aspect ratio
common in video output.
The ability of the projector to automatically recognize and synchronize to the
horizontal and vertical scan frequencies of an input signal for proper display.
The frequency range of the projector's video amplifier.
The speed at which serial communications travel from their origin. The
Vista
GRAPHX
10K default baud rate of 9600 can be changed to match a
controlling device.
The time inside one scan line during which video is not generated. The blanking
time of the input signal must be equal to or greater than the retrace time of the
projector.
In projection, brightness usually describes the amount of light emitted from a
surface such as a screen. It is measured in foot-lamberts or candelas per square
meter.
Unit of measure for measuring intensity of light.
A collection of measurements stored by the projector for a given input source,
including frequencies, pulse width, polarity, syncs, channel number and location,
user-adjustable display settings, etc. Use channels to switch between a variety of
inputs quickly, automatically recalling previous display setups.
A list/menu of previously-defined channels available in the projector.
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