Following is an explanation of some of the terms used in this guide which may be unfamiliar or which were not explained in the text of this guide itself. Further
information can be obtained by referring to other commercially-available publications.
5BNCA port used to input analogue video signals.
Aspect ratioThe ratio between an image's length and its height. HDTV images have an aspect ratio of 16:9 and appear elongated. The
aspect ratio for standard images is 4:3.
Colour temperatureThe temperature of an object which is emitting light. If the colour temperature is high, the colours tend to take on a bluish
tinge. If the colour temperature is lower, the colours tend to take on a reddish tinge.
Component videoVideo signals which have the video brightness signals and colour signals separated, in order to provide better image quality.
In high-definition TV (HDTV), it refers to images which consist of three independent signals: Y (luminance signal), and Pb
and Pr (colour difference signals).
Composite videoVideo signals which have the video brightness signals and colour signals mixed together. The type of signals commonly used
by household video equipment (NTSC, PAL and SECAM formats).
The carrier signal Y (luminance signal) and chroma (colour) signal which are contained in the colour bar are overlapped to
form a single signal.
ContrastThe relative brightness of the light and dark areas of an image can be increased or decreased in order to make text and
graphics stand out more clearly, or to make them appear softer. Adjusting this particular property of an image is called
"contrast adjustment".
Cool-downThis is the process by which the projector's lamp is cooled down after it has become hot through use. It is carried out
automatically when the [Power] button on either the projector's control panel or the remote control has been pressed to turn
off the projector. Do not disconnect the power cable while cool-down is in progress, otherwise the cool-down process will not
work properly. If the cool-down period is not allowed to finish normally, the projector's lamp and internal components will
remain at high temperatures, and this may shorten the operating life of the lamp or cause problems with the operation of the
projector.
Dolby DigitalA sound format developed by Dolby Laboratories. Normal stereo is a 2-channel format which uses two speakers. Dolby
Digital is a 6-channel (5.1-channel) system which adds to this a centre speaker two rear speakers and a sub-woofer.
EMP Link21LA utility software program that allows the projector to be connected to a computer so that the computer can be used to control
the projector. For details on acquiring the software and for instructions on using the software and compatible projector
models, please visit the Web site http://www.epson.co.uk/support/download/projector.htm.
HDTVAn abbreviation for High-Definition Television. It refers to high-definition systems which satisfy the following conditions.
•Vertical resolution of 750p or 1125i or greater (p = progressive scanning, i = interlaced scanning)
•Screen aspect ratio of 16:9
•Dolby Digital audio reception and playback (or output)
Interlaced scanningA method of image scanning whereby the image data is divided into fine horizontal lines which are displayed in sequence
starting from left to right and then from the top to the bottom of the screen. The even-numbered lines and odd-numbered lines
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