CREATOR Wireless IR Interpretation System - Manual (Page 9)

CREATOR CORPORATION (CHINA) 2010-04 WWW.CREATOR1997.COM
2 Digital IR Language Distribution System User Manual
◆ Using IR to transmit
IR is part of the electromagnetic radiation
spectrum, which includes visible light, radio wave
and other radiation wave. The wave length of IR
is longer than the visible light, thus, IR cannot
penetrate the walls and ceiling. In this way, the
confidentiality of the meeting can be ensured,
tapping and interference can be avoided.
CREATOR’s IR language distribution system
uses the IR modulated by DQPSK to transmit the
signal. At the same time, this system also needs
radio frequency permission.
◆ Advanced digital technology
Full-digital DQPSK modulation technology
has been used to gain high frequency usage and
strong anti-interference ability.
The system applies full-digital audio
processing technology to ensure the high audio
quality, eliminate overhearing between channels
and noise etc.
◆ Free from the interference of fluorescent
light
The traditional IR language distribution
system is easily interfered by the fluorescent light.
CREATOR has applied unique technology and
has solved this problem thoroughly. It works on
2-6MHZ frequency, and avoided the interference
from various kinds of lighting sources.
◆ Flexible channel selection
CREATOR has left huge flexibility to the
users while designing the channels, and has
provided 16 general quality audio channels. (15
different translation channel + 1 original voice).
The general quality channels take smaller
bandwidth and can be used to transmit audio
signals.
◆ Flexible and convenient using methods
Using the IR system gives the delegates the
freedom of going around the whole meeting
room., because the signal transmit in the air, and
the system has no physical connection, thus the
activities can only be limited by the walls of the
meeting room. The IR receiver is light and
delicate, which can be put in the pocket of the
user’s T-Shirt or coat.
◆ Simple Installation and maintenance
The system is easy to install (the time it
takes depends on the allocation and correction of
the radiating panels). The only job to be done is
connect
the equipments together, and
maintenance is just charging.
Once the installation is finished, the system
can be expanded any time. If the meeting scale
enlarges, what have to be done is just add more
IR receivers in to the system, and the basic
structure doesn’t have to be changed.
1.4 Factors that affect the IR
radiation
1.4.1 the directivity of receiving and emitting
CREATOR digital IR distribution system has
wide receiving angle, which can allow the receiver
to get perfect sound quality no matter how they
are placed. Please check Fig.1-1.
CREATOR radiating panel’s cover area is a
ellipse, which means as the distance gets larger,
the dimension of the radiation area gets larger till
a certain limit is reached. Please check the
Fig.1-2 “radiating panel coordinate illustration.
Fig1-1 IR receiver ‘s best receiving range