Toa IR-702T - Manual (Page 11)

11
10.1. Installation Precautions
Because the infrared wireless microphone and receiver have their own directivity for infrared transmission and
reception, take care that they are installed and operated under stable communication conditions.
• Number of infrared wireless receivers
Use 2 or more receives.
• Installation Position
· The infrared beam can be blocked by a human body or
other objects. To avoid this, install multiple infrared
wireless receivers that can be viewed from the infrared
wireless microphone.
· Install multiple infrared wireless receivers so as to allow
constant communications between the infrared
microphone and at least one infrared wireless receiver in
any specific situation. When installing the infrared wireless
receivers, take care that they can sufficiently cover the
communications area from different angles. If the infrared
wireless microphone is used in the communications area
where only one infrared wireless receiver is installed,
communications may be interrupted when the infrared
beam is blocked by a human body or other objects.
· Install the infrared receiver at a height of 2 – 3 m (6.56 – 9.84 ft) from the floor.
· Install the infrared wireless receivers at a height that protects them from damage that could result from
being hit by an object.
• Distance between the infrared wireless microphone and receiver
Malfunctions or noise could result from the infrared wireless microphone and receiver being too close to
each other. Keep the infrared wireless microphone at least 2 m (6.56 ft) away from the receiver.
• Radio Noise
Do not install the infrared wireless receiver and cables close to devices that can generate radio noise, such as:
Inverter-powered equipment (fluorescent lights, air-conditioners, etc.), dimmers, digital equipment, PCs and
other computer equipment.
• Infrared Receiver Input Terminal
Take care not to short-circuit the infrared wireless receiver's input terminal and the infrared wireless tuner's
receiver input terminal, as the power supply could be shorted, potentially resulting in equipment failures.
• Sunlight and Fluorescent Lighting
System malfunctions or noise could result from installing the infrared wireless receiver in locations exposed
to sunlight, fluorescent lighting or other infrared generating sources. When installing the receiver, make the
following arrangements so that it is not exposed to infrared sources:
[Avoid Sunlight]
· To prevent equipment from being directly exposed
to sunlight, block the sunlight using curtains or
window shades.
· When mounting the receiver to a ceiling, keep it at
least 2 m (6.56 ft) away from the window.
[Install Away From Fluorescent Lighting]
When installing the receiver, keep it at least 50 cm (1.64 ft) away from the fluorescent lighting.
10. INSTALLING THE INFRARED WIRELESS RECEIVER
IR-510R IR-500R
Ceiling
Wall
Note
In this figure, the IR-510R receives a signal
from the infrared wireless microphone because
there is no shield between the two.
However, communication to the IR-500R could
be interrupted if the user's body blocks the
beam like a shield.
Over 2 m (6.56 ft)
Sunlight
Ceiling-mounted type
Wall-mounted type
Fluorescent
lighting
Over 50 cm
(1.64 ft)
Ceiling-mounted type
Wall-mounted type
Over 50 cm
(1.64 ft)
Over 50 cm
(1.64 ft)
[Avoid installing close to other infrared
sources shown below]
· Lighting device
· Liquid crystal projectors, overhead projectors
and incandescent lights
· Plasma displays
· Remote control units, infrared LAN and other
infrared devices