DIMENSIONS
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❖ Front ❖ Rear
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Aspect ratio
Width and height ratio of an image. The normal
aspect ratio of a computer and video image is 4 :
3. There are also wide images with an aspect
ratio of 16 : 9 and 21 : 9.
Black Level (Black setup)
The signal level which represents black picture
intensity.
For NTSC system for USA, this level is 7.5IRE.
NORMAL: 16 (Black) – 235 (White)
For NTSC system for Japan and DVD, this level
is 0IRE.
EXPAND: 0 (Black) – 246 (White)
Color Temperature
White color hue.
Low color temperature implies a warmer (more
yellow/red) light.
High color temperature implies a colder (more
blue) light.
Keystone
Distortion of the image caused by projection to a
wrong vertical/horizontal angle.
GLOSSARY
Unit : inch (mm)