Specifications

Chapter 2 Installation 17
DISPLAY DEVICES WATCHOUT can be used with most display technologies, including DLP and
LCD projectors, LCD monitors, video wall cubes and plasma screens. Generally
speaking, you can use any display device that’s compatible with the display
card in the display computer.
For projection purposes, DLP projectors with a high contrast ratio (2000:1 or
better) is recommended. See “Display Issues” on page 239 for further details
on various kinds of displays, and how to connect them to WATCHOUT.
PROJECTION SCREEN As in all multi-screen projection applications, it is important to choose the
screen material with caution. Make sure you buy your screen material from a
screen manufacturer familiar with the requirements of multi-image projection,
or similar applications.
For front projection, avoid using high-gain, or “silver” screens. Such screens
often cause uneven brightness or banding when using multiple projectors and/
or when viewing from non-optimal angles. See “Banding” on page 245.
A related problem when using rear projection screens is the “hot-spot” caused
by the projection lens showing through the projection surface. See “Rear
Projection” on page 245.
SOUND Sound can be provided through any of the display computers, or through the
production computer. Simply connect the sound output from the computer
(usually a 3.5 mm mini-jack) to the amplifier or powered speakers.
If you need to run the computer’s line level audio signal a long distance, you
should use an audio line level transformer. This converts the unbalanced signal
coming from the computer to a balanced signal, thereby reducing the risk of
hum and noise when connected to a professional audio amplifier.
Sound output jack symbols.