Praesideo 3.5 Installation and User Instructions 4 Amplifiers

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11.3.2 Supervision-slave

Warning

To prevent the hazard of electric shocks, switch the power amplifier and the back-up power supplies off, before starting installing the supervision-slave.

To reduce the risk of electric shock do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. See section 1.2 Intended audience.

Warning

The supervision-slave is susceptible to electrostatic discharges. Wear an anti-ESD bracelet during the installation of the supervision-slave.

For a correct operation of the supervision, it is important that the loudspeaker line has the characteristics that are listed in section 11.5.5. Also, the minimum total loudspeaker impedance at 70 kHz is important. This impedance depends on the quality of the transformer in the loudspeaker and the number of loudspeakers in the line. The loudspeakers of Bosch Security Systems are designed with this impedance criterion in mind.

60

40

50

 

10

3.1

 

5

5

 

70

 

 

40

 

 

80

figure 11.5: Supervision-slave PCB dimensions

Proceed as follows to install the supervision-slave in the loudspeaker line:

1Use the holes in the supervision-slave (see figure 11.5) to install it in a loudspeaker. The coils on the supervision-slave PCB must be kept at a distance of 30 mm or more from the loudspeaker magnet and a distance of 50 mm or more from the loudspeaker transformer, otherwise the magnetic fields can

disturb the correct operation of the supervision-slave.

2Connect the loudspeaker line signal to the supervision-slave PCB (see section 11.2.2).

Bosch Security Systems 2011-02

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Bosch Appliances 3.5 manual Supervision-slave PCB dimensions
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3.5 specifications

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