Glossary - Runco Reflection VX-5c Owner's Operating Manual

This appendix defines the specific terms used in this manual as they apply to this projector. Also included are
other general terms commonly used in the projection industry.
Active Line Time
Ambient Light Rejection
Analog Video
Aspect Ratio
Auto Source
Bandwidth
Baud Rate
Blanking Time
Brightness
Candela or Candle
Channel
Channel List
Channel Number
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 com-
mon 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. In this pro-
jector, the RS-232 or RS-422 default baud rate of 38400 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
setups quickly, automatically recalling previously defined display parameters.
A list/menu of previously-defined channels available in projector memory.
A number that uniquely identifies a specific channel retained in projector memo-
ry. The projector can retain up to 99 channels.
A-1
Appendix A

Glossary