Ideal positions
The best result is achieved when placing the transmitter in a position where it can transmit to
the receivers unobstructed, as illustrated in figures B) to E).
Important:
Direct the transmitter towards the audience.
Remember:
Most objects block infrared light. The transmitter cannot be concealed behind
walls, glass, curtains, etc. These patterns are the direct radiation pattern. The infrared radia-
tion does not drop to zero outside the illustrated patterns; it decreases. It still may be useable
at a greater distance, depending on the receiver sensitivity and the reflective characteristics
of the room. Reflections of the infrared light from walls, ceilings, and floors may change these
patterns.
Placing the transmitter
Installation
16 English
English 17
Screen / stage
Frontal mounted transmitter
Rearward mounted transmitter
Screen / stage
B) Top view
D) Top view
E) Side view
C) Side view
Figure F)
1. An AC/DC power adaptor is supplied with your PRO IR-400. First insert the output jack of
the adaptor into the „DC Power“ socket of the transmitter.
2. Connect the ”AUDIO IN” ports of the transmitter with the Audio-Out ports of your chosen
audio source.
3. Plug the power supply into a mains outlet.
4. In case you would like to transmit speech, it is possible to connect 600 Ohm dynamic
microphones (or high impedance condenser microphones) to the “MIC-IN”- ports.
The incoming microphone signal can be mixed with the main audio signal.
5. The transmitter can be mounted on walls, according apertures are located on the
rear side (Figure A, Pos. 13) of the device. It can also be mounted upon a tripod or
other bracket.
Power supply
Mains outlet
audio sources,
as required
Connection to Audio-Out of audio sources
Optionally: Microphones
PRO_IR-400.indd 16-17
31.03.2014 08:30:18
