Madrigal Imaging MP-8, MP-9 manual Current Setup, Memory, Gain or Screen

GLOSSARY

Contrast (ratio) ➤ The ratio of brightness of the brightest possible area to the darkest possible area of an image.

Convergence ➤ The alignment of the projected red, green and blue images on the projection screen.

Current Setup	➤	The setup memory which is currently being used to display a given
Memory		source's image.

Curved Screen ➤ A projection screen which is curved to improve screen gain. Curved screens usually have screen gains which are greater than 1 but viewing angles much less than 180°.

Decoder ➤ A device that converts NTSC, PAL, PAL M, PAL N, PAL 60, SECAM or NTSC 4.43 video to RGB video (Multi-standard Decoder).

Diffused ➤ Screen A type of rear-projection screen which spreads the light striking it. Screen gain is less than 1 but audience viewing angles are increased.

Display Setting ➤ The level of a display adjustment. Some display adjustments are: Contrast, Brightness, Blanking, Bow, Size, Keystone, Pincushion, Focus and Convergence.

Flicker ➤ A rapid variation in brightness created when the frame rate is too slow. (See also Interlace.)

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 is one half of vertical frequency.

Foot-candle➤ The intensity of visible light per square foot.

1 foot-candle = 1 lumen/square foot = 10.76 lux

Foot-lambert➤ The luminance (brightness) which results from one foot-candle of illumination falling on a perfectly diffuse surface.

Gain or Screen	➤	The ability of a screen to direct incident light to an audience. A flat matte
Gain		white wall has a gain of approximately 1. Screens with gain less than 1

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