Symmetrical Audio Input And Interpreters Module (Lbb 3422/1X); Introduction; Interpreters Desks - Bosch INTEGRUS Installation And Operating Manual

INTEGRUS |
LBB 3222/04 and LBB 3422/10

2 Symmetrical audio input and interpreters module (LBB 3422/1x)

2.1 Introduction

A symmetrical audio input and interpreters module is required when an Integrus transmitter is to be used for direct connection
of interpreters desks LBB 3222/0x (in combination with e.g. the CCS 800 system) or with analogue conference systems (such as
the CCS 400). The interface module must be mounted in the transmitter housing.
Figure 2.1: Symmetrical audio input and interpreters module, front and rear views
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Figure 2.2: Symmetrical audio input and interpreters module, rear view and PCB layout
1. Interface connector – A 25-pole sub-D female connector for direct connection of up to 12 LBB 3222/0x interpreters
desks or analogue conference systems with interpretation.
2. Positions for input transformers – Eight input transformers can be mounted for galvanic separation of source and
electronics inputs. The eight symmetrical audio inputs at the 25-pole D-type plug can be isolated by adding eight audio
transformers (Beyer type TR/BV3) in these positions.
3. Function switches – Three DIL switches for determining module functionality.
4. PCB connector - A 55-pins connector that connects the module to the Integrus transmitter's main PCB.
BOSCH Security Systems B.V.| February 2003
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