Christie Digital Systems CSP70 Dot Clock, Flicker, Foot-candle, Foot-lambert, Frame Rate, Input

	Appendix A: Glossary
Dot Clock	' The maximum frequency of the pixel clock. Also known as pixel clock rate.
E-EDID	' The Enhanced Extended Display Identification Data standard, established by VESA,
	enables properties (such as resolution) of a display device to be detected by the
	display card in a controlling device such as a PC. The PC, in turn, can then output in a
	matching format to fill the display. Some sources used with the projector are VESA E-
	EDID reported.
Flicker	' A very rapid variation in image brightness caused by a frame rate that is too slow.
	(See Interlace) See also Lamp Flicker.
Foot-candle	' The intensity of visible light per square foot.
Foot-lambert	' The luminance (brightness) which results from one foot-candle of illumination falling
	on a perfectly diffuse surface.
Frame Rate	' 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 (also known as field rate) is one half of vertical frequency.
Gain or Screen Gain	' 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.
GPIO ' General Purpose Input Output, used for remote control of a limited number of
	programmable functions by direct signal or dry-contact connection.
HDTV ' High-definition Television (1035, 1080 and 1125 lines interlace, and 720 and 1080
	line progressive formats with a 16:9 (i.e. 1.77) aspect ratio.
Help Text	' A display of help information regarding the current task or presentation.
Horizontal Frequency	' The frequency at which scan lines are generated, which varies amongst sources. Also
	called horizontal scan rate or line rate.
Horizontal Offset	' The difference between the center of the projected image and the center of the
	projector lens. For clarity, offset is often expressed as the maximum amount of the
	image that can be projected to one side of the lens center without degrading the image
	quality. Horizontal offset ranges can be affected by the type of lens in use, and
	whether or not the image is offset vertically at the same time.
Hot Spot	' A circular area of a screen where the image appears brighter than elsewhere on the
	screen. A hot spot 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.
Input	' A physical connection route for a source signal, described by a 2-digit number
	representing 1) its switcher/projector location and 2) its slot in the switcher/projector.
Input Signal	' Signal sent from a source device to the projector.

RPMSP & CSP70-D100U User’s Manual A-3