Connections - Bosch DCN Next Generation Installation And User Instructions Manual

DCN NG | Installation and User Instructions | Section 3 | Central Control Equipment
10.2.2 Rear view
The rear of the analogue audio expander (see
figure 10.1) contains the following:
4 Control inputs - Eight control inputs to enable
and disable the audio inputs and the audio outputs of
the audio expander analogue (see section 10.3.5).
5 Audio inputs - Four audio inputs to insert
analogue audio signals that originate from external
audio sources (see section 10.3.3).
6 Audio outputs - Four audio outputs to extract
analogue audio signals from the system (see
section 10.3.4).
7 Ground - A connection to mechanically ground the
audio expander analogue (when mounted in a rack).
8 Optical network - Two optical network sockets to
connect the audio expander analogue to the optical
network (see section 10.3.2).
9 Control outputs - Five control outputs to indicate
if audio outputs and the optical network connection
are active (see section 10.3.6).
10.3

Connections

10.3.1 Introduction
This section gives an overview of typical system
connections using the audio expander analogue.
• Connecting to the optical network (see
section 10.3.2).
• Connecting the audio inputs (see section 10.3.3).
• Connecting the audio outputs (see section 10.3.4).
• Connecting the control inputs (see section 10.3.5).
• Connecting the control outputs (see section 10.3.6).
Bosch Security Systems | 2004-03 | 9922 141 70521en
10.3.2 Connecting to the optical net-
work
Connect the optical network to the optical network
sockets on the audio expander analogue using
LBB4416/xx optical Network Cables.
figure 10.2: Connecting to the optical network
10.3.3 Connecting audio inputs
The audio expander analogue has 4 audio inputs to
interface with external analogue audio sources. Each
audio input has two types of sockets on the rear of the
audio expander analogue: one XLR socket
(for balanced signals) and one double cinch socket
(for unbalanced signals).
Note
The audio expander analogue mixes signals
connected to the cinch sockets of the same
audio input into one single mono signal.
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