Christie HAL Series User Manual page 79

This appendix defines the specific terms used in this manual as they apply to DLV 1280. 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. Also known as proportion.

The ability of the projector to automatically synchronize to the horizontal and
vertical scan frequencies of an input signal.

The frequency range of the projector's video amplifier.

The speed at which serial communications travel from their origin. The DLV
1280 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 emitting from a
surface such as a screen. This intensity is measured in foot-lamberts or candelas
per square meter.

Unit of measure for measuring light intensity.

A unique set of adjustment levels and options stored in projector memory and
used to display an image from the current source. A channel includes
frequencies, polarity, syncs, channel number and location, user-adjustable
display settings, and other variables. Channels enable the projector to
automatically recognize and properly display input from a variety of sources.
Sometimes known as source setups.

A number used to uniquely identify a specific channel (source setup) stored in
projector memory (maximum of 99).
DLV 1280
User's Manual
A 1