Bosch 3.5 User Manual

Bosch Security Systems | 2011-02

Praesideo 3.5 | Installation and User Instructions | 4 | Amplifiers

en | 134

8.2 Controls, 

connectors 

and 

indicators

The front of the power amplifier (see figure 8.2) contains 
the following:
1 Menu display - A 2x16 character LCD display 

gives information about the power amplifier (see 
section 8.6).

2 Menu button - A turn-and-push button to navigate 

through the menu (see section 8.6).

3 Monitoring headphones output - A 3.5 mm 

(0.14 inch) jack socket to connect headphones for 
audio monitoring purposes.

The rear of the power amplifier (see figure 8.2) contains 
the following:
4 Ground - A connection to electrically ground the 

power amplifier.

5 Control inputs - The control inputs can be used to 

receive signals from third party equipment that must 
trigger actions in the Praesideo network (see 
section 8.3.7).

6 Audio inputs - Audio inputs for receiving audio 

signals from analog audio sources (see 
section 8.3.6).

7 Back-up power - A socket for connecting a 

back-up power supply (see section 8.3.8).

8 Mains on/off switch - A switch to switch the 

mains of the power amplifier on and off (see 
section 8.3.2).

9 Fuse holder - A fuse holder with a fuse that 

protects the power supply of the power amplifier (see 
section 8.3.2).

10 System bus - Two system bus connectors to 

connect the power amplifier to other Praesideo 
equipment.

11 Amplifier channels - Each power amplifier unit 

contains 1 to 8 completely separated and 
configurable amplifier channels. The number of 
amplifier channels depends on the type of power 
amplifier (see section 8.3.5).

12 Mains inlet - A mains socket to connect the power 

amplifier to the mains (see section 8.3.2).

13 Signal Ground - A switch that connects the signal 

ground to the safety ground (see section 8.3.4).

14 Voltage selector - A switch to select the local 

mains voltage (see section 8.3.2).