Bosch Appliances 3.5 manual 6.3Connections, 6.3.1Introduction, 6.3.2Connecting the network

Praesideo 3.5 Installation and User Instructions 3 Control Equipment

en 108

6.3Connections

6.3.1Introduction

This section gives an overview of typical system connections using the audio expander.

•Connecting the network (see section 6.3.2).

•Connecting audio inputs (see section 6.3.4).

•Connecting audio outputs (see section 6.3.4).

•Connecting control inputs (see section 6.3.5).

•Connecting control outputs (see section 6.3.6).

6.3.2Connecting the network

Connect the audio expander to the Praesideo system using the system bus connectors and LBB4416 network cables. Both connectors are interchangeable.

This unit is powered by the network controller, via the Praesideo system bus.

6.3.3Connecting audio inputs

The audio expander has 4 audio inputs to interface with analog audio sources. Each audio input has two connectors on the rear of the audio expander; one XLR connector (for balanced signals) and one double cinch connector (for unbalanced signals). The audio expander mixes stereo signals connected to the cinch connectors of the same audio input into one single mono signal.

The analog audio can be a line source as well as a microphone. See table 6.1 for an overview of the input types supported by each of the inputs.

Note

The microphone inputs should not be used to connect emergency microphones. These inputs do not provide microphone connection supervision.

table 6.1: Audio input types

Audio Input	Microphone	Line
	(XLR only)
1	Yes	Yes
2	Yes	Yes
3	No	Yes
4	No	Yes

Note

The audio inputs can handle electret microphones as well as dynamic microphones, since the audio expander can generate the phantom supply for electret microphones.

See figure 6.3 for details about the audio input sockets

21

Audio In

5

4

3

figure 6.3: Audio input sockets

table 6.2: Audio input socket details

Pin	Socket	Definition	Description
1	XLR	Xternal	Shield/ground
	(female)		(phantom supply -)
2		Live	Positive
			(phantom supply +)
3		Return	Negative
			(phantom supply +)
4	Cinch	Right	Right channel in
5		Left	Left channel in

6.3.4Connecting audio outputs

The audio expander has 4 audio outputs to route analog audio signals to other equipment (e.g. a tape deck to record a specific audio signal). Each audio output has two connectors on the rear of the audio expander; one XLR connector (for balanced signals) and one double cinch connector (for unbalanced signals).

Note

The right and left cinch connectors carry the same mono signal.

Bosch Security Systems 2011-02