Table Of Contents - Bosch LBB 1925 Installation And Operating Manual

Plena System Pre-amplifier | Installation and Operating Manual | Table of contents

Important safeguards..........................................................................................................................................................3

About this manual ..............................................................................................................................................................4

Safety precautions...............................................................................................................................................................4

Table of contents ................................................................................................................................................................5

1 About the system pre-amplifier .......................................................................................................................................7

1.1

Controls & Connections (front) ...............................................................................................................................8

1.2

Controls & connections (rear) ..................................................................................................................................8

2 Internal settings (system pre-amplifier) ...........................................................................................................................9

2.1

Setting the zones for trigger 1 and 2 .......................................................................................................................9

2.2

Setting tones ..............................................................................................................................................................9

2.3

Setting the Speech filter and call station volume ................................................................................................10

2.4

Setting priority .........................................................................................................................................................10

2.5

Setting single and dual channel use ......................................................................................................................11

2.6

Override contact setting .........................................................................................................................................11

3 Installation in rack (system pre-amplifier) ....................................................................................................................12

4 External settings and connections (system pre-amplifier) ...........................................................................................13

4.1

Connect the DC supply (battery) ..........................................................................................................................13

4.2

Connect a microphone ...........................................................................................................................................14

4.3

Connect the call stations ........................................................................................................................................15

4.4

Connect an emergency input line .........................................................................................................................15

4.5

Connect audio sources for background music .....................................................................................................16

4.6

Connect to a booster ..............................................................................................................................................17

5 Operation (system pre-amplifier) ...................................................................................................................................18

6 About the call stations .....................................................................................................................................................19

6.1

Controls & Connections (top) ................................................................................................................................20

7 Internal settings (call stations) ........................................................................................................................................21

7.1

Chime .......................................................................................................................................................................21

7.2

Setting sensitivity & speech filter ...........................................................................................................................21

8 Operation (call stations) ..................................................................................................................................................22

9 Technical data ..................................................................................................................................................................23

9.1

System pre-amplifier LBB 1925 ............................................................................................................................23

9.1.1

Electrical .............................................................................................................................................................23

9.1.2

Performance .......................................................................................................................................................23

9.1.3

Inputs ..................................................................................................................................................................23

9.1.4

Outputs ...............................................................................................................................................................24

9.1.5

Relays ..................................................................................................................................................................24

9.1.6

Environmental conditions .................................................................................................................................24

9.1.7

General ...............................................................................................................................................................24

9.2

All-call call station LBB 1941 ................................................................................................................................25

9.2.1

Electrical .............................................................................................................................................................25

9.2.2

Performance .......................................................................................................................................................25

9.2.3

Environmental conditions .................................................................................................................................25

9.2.4

General ...............................................................................................................................................................25

9.3

6-zone call station LBB 1946 .................................................................................................................................26

9.3.1

Electrical .............................................................................................................................................................26

9.3.2

Performance .......................................................................................................................................................26

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