Infra-Red Radiators (Lbb 4511/00 And Lbb 4512/00); Description - Bosch INTEGRUS Installation And Operating Manual

INTEGRUS | Digital Infra-red Language Distribution System

3 Infra-red Radiators (LBB 4511/00 and LBB 4512/00)

3.1 Description

These units accept the carrier signals generated by the transmitter and emit infra-red radiation carrying up to 32 audio
distribution channels. They are connected to one or more of the four HF BNC outputs of the IR transmitter. A maximum of
30 radiators can be connected to each of these outputs by means of loop-through connections.
The LBB 4511/00 has an infra-red output of 12.5 W, while the LBB 4512/00 has an infra-red output of 25 W. Both have an
automatic mains power voltage selection and are switched on automatically when the transmitter is switched on.
The attenuation of the signal by the cable is equalised automatically by the radiator. When the radiator is supplied with power
and the transmitter is switched on, the radiator initialises the equalisation. The red LEDs flash for a brief period of time to
indicate that the initialisation is in progress.
When not receiving carrier waves, the radiators switch to standby mode. There is also a temperature protection mode which
automatically switches the radiators from full to half power or from half power to stand-by if the temperature of the IREDs
becomes too high.
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2
3
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Figure 3.1 LBB 4511/00 and 4512/00 IR Radiators (back view)
1. Mains input - Male Euro mains connector. The radiators have automatic mains voltage selection.
2. IR signal input/loop-through - Two HF BNC connectors for connecting the radiator to the transmitter and for loop-
through connection to other radiators. Automatic cable termination is achieved by a built-in switch in the BNC connectors.
3. Output power selection switch - The radiators can be switched between full- and half-power operation.
4. Delay compensation switches - Two 10-position switches to compensate for differences in cable lengths to the radiators.
5. Amber indicator LEDs - Give an indication of the transmitter status.
6. Red indicator LEDs - Give an indication of the transmitter status.
Note: The indicator LEDs are positioned behind the semi-transparent cover and are only visible when ON.
100-240 V
Loop - Through inputs
Do not
terminate
Output power
High
Low
Delay compensation
X10
X1
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Figure 3.2 LBB 4512/00 25 W IR Radiator (front view)
BOSCH Security Systems | February 2003
en |
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