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2.5.4 Caution item
a. Infrared operating distance varies depending on the color of the ceiling and walls.
b. Noise may be generated by interference regardless of the operating distance between
the IR receiver unit and the microphone unit; in this case, move receiver unit away
from infrared-emitting objects.
c. Do not place any obstructions around the microphone units.
d. Block direct sunlight from the unit using curtains or blinds.
e. When installing the IR receiver units on the ceiling, install the units at least 2 to 3
meters away from the windows or the wall.
f. Install the IR receiver units more than 50cm from fluorescent lamps.
g. In addition, if the IR receiver units are installed near the infrared-emitting sources list
below, the system may malfunction or noise may be generated. When installing the IR
receiver units, and the microphone units, take care to avoid placing them near the
following infrared-emitting and noise sources:
Lighting equipment
Projector (liquid crystal, DLP), OHP, incandescent bulbs
Mercury lamp, halogen lamps, and inverter fluorescent lamps
Plasma displays
Infrared devices such as the remote control, infrared microphones and infrared LAN
Dimmer controls
Digital equipment like the digital power amplifier and cable wiring to this.(such as
speaker output wiring of the digital power amplifier)
Up to 12 IR receiver units can be installed of each channel (total 2 channels)
Because the interconnection coaxial cable (50Ω) of IR receiver unit is used for
transmit IR signal and IR receiver power (DC12V), please make sure the circuit not
shorted between IR signal and power when install the IR receiver, or it will burned out
the fuse (0.5A) of IR receiver unit on the rear panel of IR main unit.
2.6 Installation of IR microphone unit
2.6.1 Mounting and dismounting the battery
a.
Mounting battery: Put the battery on the bottom side of the microphone unit; insert
the battery in the direction of the arrow to fasten it.
*Listen for the click sound and make sure the battery is securely inserted.
b.
Dismount battery: Press the battery detach/lock button in the direction of the arrow
and take it out by press on the battery detach/lock button.
