Operation - Sennheiser SZI 1019 A Manual

INFRAREDPOWERRADIATORSZI1019 A
Introduction
The SZI1 019 A is an inlrared power radiator. Within a wireless inlrared sound transmission system,
it has the task 01converting the electrical signals supplied by an inlrared control transmitter into
invisible inlrared light and radiating this into the room.
1Ithis is your lirst contact with inlrared technology, the lollowing picture will help you to understand
the layout 01 such an inlrared system.
SZI1019 A
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Figure 1
Modulated
inlrared light
IR receiver
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AF2
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IR contral transmitter
SI 1019 A
First, lor the technically minded, a lew words on the technology 01 the radiator: the SZI1019 A has a
built-in power supply unit and is thus independent 01 extemal supply units. This solution has the
advantage that time and material costs during installation ot the radiator can be kept very low. The
radiator is switched automatically by the carrier signal generated by the control transmitter. This
signal drives 143 inlrared diodes in the SZI1 019 A which radiate the signal in the torm 01 modula-
ted inlrared light. The diodes are arranged in 12 rows. For rapid tunctional checking, a red LEO is
allocated to each diode row and lights it the row tails. Connection ot the signal tram the control
transmitter to the radiator is carried out with commercially available 50 Q coaxial cables.
Operation
Single channel and multi-channel operation
1Ithe radiator is used in a single channel (mono) system, set switch @ to position "Mono". I his
increases the radiated power lor single channel operation by approximately 30 % For multi-channel
systems, set the switch to "Multi-Channel".
Installation of the radiator
The radiator is equipped with two %" x 27 G threaded inserts tor mounting on tripods or tor wall or
ceiling mounting. Each threaded insert also has an adapter which permits connection 01 the radia-
tor to %" or %" threads.
When it leaves the tactory, the radiator is prepared tor use with %" threads.lt you wish to convert to
%" or %" x 27 G threads, then simply reverse the adapter or remove it completely, respectively.
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