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Bosch LBB 1925 User Manual

Bosch LBB 1925
30 pages
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Plena System Pre-amplifier and Call Stations
Installation and Operating Manual
LB B 1925/10, LBB 1941,
LBB 1946
en
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Bosch LBB 1925 Specifications

General IconGeneral
BrandBosch
ModelLBB 1925
CategorySecurity System
LanguageEnglish

Summary

About this manual

Conventions

Describes the meaning of warning, caution, and note symbols used in the manual.

Safety Precautions

About the system pre-amplifier

Controls & Connections (front)

Details the front panel controls and connections of the system pre-amplifier.

Controls & Connections (rear)

Details the rear panel connections and inputs/outputs of the system pre-amplifier.

Internal settings (system pre-amplifier)

Setting the zones for trigger 1 and 2

Configures zones for trigger inputs 1 and 2, affecting alarm or time signals.

Setting tones

Sets time or alarm tones for triggers and chime tones for call stations.

Setting the Speech filter and call station volume

Adjusts the speech filter for mic/line input and sets call station volume.

Setting priority

Details the default priority order for inputs like emergency, triggers, and music.

Setting single and dual channel use

Configures the pre-amplifier for single or dual channel audio output for music and calls.

Override contact setting

Sets override outputs for zones to ensure calls are heard over local volume controls.

Installation in rack (system pre-amplifier)

External settings and connections (system pre-amplifier)

Connect the DC supply (battery)

Connects a backup power supply, such as batteries, to the system pre-amplifier.

Connect a microphone

Connects a microphone or line-level source to the input channel of the pre-amplifier.

Connect the call stations

Connects Plena Call Stations directly or in a loop-through arrangement.

Connect an emergency input line

Connects an emergency input line for high-priority announcements and signals.

Connect audio sources for background music

Connects audio sources like CD, Tape, or Auxiliary for background music.

Connect to a booster

Connects the pre-amplifier to one or two boosters for single or dual channel operation.

Operation (system pre-amplifier)

About the call stations

Internal settings (call stations)

Chime

Configures chime settings and priority levels for call stations using DIP switches.

Setting sensitivity & speech filter

Adjusts microphone sensitivity and enables/disables the speech filter on call stations.

Operation (call stations)

Technical data

System pre-amplifier LBB 1925 Specifications

Provides detailed electrical, performance, input, output, and general specifications for the LBB 1925.

All-call call station LBB 1941 Specifications

Provides technical specifications for the LBB 1941 all-call call station.

6-zone call station LBB 1946 Specifications

Provides technical specifications for the LBB 1946 6-zone call station.

Chime tone tables

Lists available chime tones and their configuration settings.

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