Electrohome Vistagraphx 10k Roadie Users Manual

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A number that uniquely identifies a specific channel retained in projector
memory. The projector can retain up to 99 channels.
A menu item that indicates whether an option is currently in effect (checked) or
not (unchecked).
A change in the tint of a white field across an image.
The coloration (reddish, white, bluish, greenish, etc.) of white in an image,
measured using the Kelvin (K) temperature scale. Higher temperatures output
more light.
See YUV Video.
The output of video tape players and some computers, characterized by
synchronization, luminance and color signals combined on one output cable.
The degree of difference between the lightest and darkest areas of the image.
The alignment of the red, green, and blue elements of a projected image.
A projection screen which is slightly concave for improved screen gain. Curved
screens usually have screen gains which are greater than 1 but viewing angles
much less than 180
°.
Direct Digital Interface signal, supplied on the projector via the optional Vista
Digital Interface. This signal is more commonly called a serial digital 4:2:2
component video (YCrCb) signal.
Digital Micromirror Devices
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green, and blue color data.
An optional device in the projector that converts NTSC 3.58, NTSC 4.4, PAL,
PAL-N, PAL-M, or SECAM to RGB video.
The sharpness of a display from a video source.
A type of rear-projection screen which spreads the light striking it. Screen gain is
less than 1 but audience viewing angles are increased.
An adjustment that affects the display of an image. Such display settings include
contrast, brightness, tint, blanking, focus, offsets, etc.
A very rapid variation in image brightness caused by a frame rate that is too
slow. (See Interlace.)
The frequency at which complete images are generated. For non-interlaced
signals, the frame rate is identical to the vertical frequency. For interlaced
signals, the frame rate is one half of vertical frequency.
The intensity of visible light per square foot.
The luminance (brightness) which results from one foot-candle of illumination
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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. *DLQ#RU#6FUHHQ#*DLQ
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The amount of visible light per square meter incident on a surface.
1 lux = 1 lumen/square meter = 0.093 foot-candles
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 which occurs when the borders are concave or convex.
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. For
example, if a help page is displayed, the projector is not at presentation level.
The distance between the projectors front feet and the screen. Also called
Throw Distance”.
The type of code format utilized by the remote keypad(s). For any remote
Vista
GRAPHX  keypad, the default protocol from manufacture is Protocol C. 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 a given
parameter.
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 light source.
The maximum number of pixels that the projector can display horizontally and
vertically across an image. /X[
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The minimum time required for a CRT projector to move the position of the
scanning spot from the right edge to the left edge.
The time required by the video amplifier of the projector to increase its output
from 10% to 90% of the maximum value.
The video output (analog or digital) of most computers. Analog RGB video can
have 3, 4, or 5 wires — one each for red, green, and blue, and either none, one or
two for sync. For three-wire RGB, the green wire usually provides sync. (See
TTL Video).
A common asynchronous data transmission standard recommended by the
Electronics Industries Association (EIA). Also called serial communication.
A less common asynchronous data transmission standard in which balanced
differential voltage is specified. RS-422 is especially suitable for long distances.
The output from certain video tape players and video equipment. S-Video
separates sync and luminance from color information, typically producing a
higher quality display than composite video.
The horizontal or vertical frequency at which images are generated.
One horizontal line on the display.
A video output format of some video tape and disk players (used primarily in
France). SECAM (Sequential Couleur á Mémoire) signals are similar in
resolution and frequency to PAL signals. The primary difference between the
two standards is in the way color information is encoded.
A slidebar is a graphical display of an adjustable setting. The numerical setting
usually represents a percentage but can be a specific unit such as degrees Kelvin.
The device, such as a computer or VCR, connected to the projector for display.
A source is identified at the projector as  
,QSXW4,  ,QSXW5,  ,QSXW6 or  ,QSXW7, or as other
user-defined numbers. A source may have numerous corresponding channels
defined and recognized by the projector. See Input.
See Channel.
The diameter of the smallest dot that can be generated by a CRT projector.
Vista
GRAPHX 10K has a fixed spot (pixel) size.
A signal selector that can be connected to a projector for the purpose of adding
more sources.
This term refers to the part of the video signal that is used to stabilize the picture.
Sync can occur in three forms:
4,
 Composite sync:  the horizontal and vertical components are together on
one cable.
5,
 Sync-on-green:  the sync is part of the green video.
6,
 Separate sync or H.SYNC and V.SYNC:  the horizontal and vertical
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The duration of each sync pulse generated by a computer. The sync width is part
of the blanking time.
A type of RGB video with digital characteristics.
A wire connecting a single video source to a display device, such as a projector,
must be terminated by a resistance (usually 75
6 for video).
The distance between the front feet of the projector and the screen. Also called
Projector-to-Screen Distance”. Always use the correct Electrohome throw
distance formula to calculate the precise throw distance required for your lens.
Balance of red-to-green necessary for realistic representation of NTSC signals.
The ability of a projector to synchronize to inputs with frequencies within a
specified range.
The frequency at which images are generated. Vertical frequencies vary amongst
sources. Also called vertical scan rate.
The difference between the vertical height of the projector lens and the vertical
height of the display. Vertical offset range depends on the type of lens in use.
The signal that is used by display devices (such as projectors) to generate an
image. This term also refers to the output of video tape/disk players and
computers.
An optional device that converts NTSC 3.58, NTSC 4.4, PAL, PAL-N, PAL-M
or SECAM to RGB video.
A specific type of video signal, such as NTSC, PAL, SECAM. Vista
GRAPHX 10K
can automatically recognize and display the standard and display accordingly.
Screens do not reflect equally in all directions. Most light is reflected in a
conical volume centered around the line of best viewing. Maximum brightness
is perceived if you are within the viewing cone defined by the horizontal and
vertical viewing angles.
The optional Vista Digital Interface can be installed in the projector at Input 2. It
accepts serial digital 4:2:2 component video (YCrCb).
The color temperature of white used by the projector.
The area of an image that is white only. For example, a full white field is an
image that is white everywhere. A 10% white field is a white area (usually
rectangular) that occupies 10% of the image; the remaining 90% is black.
See YUV video.
A high-end signal suitable for broadcast. YUV video (also called component
video or YCrCb video) by-passes the Vista
GRAPHX 10K video decoder.
The adjustment (remote or manual) of image size through the use of a zoom lens. 6\QF#:LGWK
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When connecting the VistaGRAPHX 10K to either a computer, another VistaGRAPHX 10K projector or a Marquee
Signal Switcher, use a standard RS-232 serial communication cable. Cable details are provided below: