Praesideo 3.5 Installation and User Instructions 3 Control Equipment

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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

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Bosch Appliances 3.5 manual See .3 for details about the audio input sockets
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