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Installation
●Precautions for Installing the Sensors
◎Install the infrared sensors in a position that allows them to receive the infrared signal
regardless of the teachers movement around the classroom.
◎Do not install the sensors in direct sunlight or directly in front of strong lighting fix-
tures.
In particular, in case of the sensor is installed near by a window. Even if the sensor is
not in direct sunlight, reflections from sunlight may reduce the effective range of the
sensor. Install the infrared sensor as far away as possible (more than 5 meters) from a
window. In spite of installed far away more than 5 meters from the windows, the effec-
tive range of the sensor is not improved, try to install more and more far away from a
windows, or try to use curtains or blinds for protection from the sun.
Caution: Possible Interference from Plasma Screens
Plasma screens can generate signals that interfere with IR audio systems. To
reduce interference, choose a plasma display which is equipped with an optical IR filter.
If this is not an option, please install IR sensor with the guidelines on page 38 in mind.
More than two meters
Floor
Ceiling
Sensor
Coaxial cable
Fix coaxial cable