Bosch Appliances Home Security System 3.5 User Manual

Bosch Security Systems | 2011-02

Praesideo 3.5 | Installation and User Instructions | 3 | Control Equipment

en | 103

Connector (rear side):

Female XLR and female stereo cinch socket per input. 

The stereo signal from the cinch is internally converted 

to a mono signal

Preferred cable:

Shielded

Maximum input signal level:

18 dBV ± 1 dB (XLR)

6 dBV ± 1 dB (cinch)

Input range:

-12 dB to 0 dB with respect to maximum input level

Input sensitivity setting:

Software

Frequency response:

-3 dB points at 20 Hz and 20 kHz (tolerance ± 1 dB)

Input impedance:

100 kohm (XLR)

12 kohm (cinch)

Signal/Noise ratio:

> 87 dBA at maximum level

Common mode rejection ratio:

> 40 dB

Input cross-talk:

> 75 dB at maximum level at 100 Hz, 1 kHz 

and 10 kHz

Distortion:

< 0.05% at 1 kHz at -3 dB of the maximum input level

Connector (rear side):

Female XLR per input

Preferred cable:

Shielded

Nominal input level:

-57 dBV based on 91 dBSPL for a microphone with 

sensitivity of 2 mV/Pa, a male voice with normal 

loudness and a speaker to microphone distance of 

0.15 m

Headroom:

30 dB

Input range:

-7 to +8 dB with respect to nominal input level 

(limiter threshold)

Input sensitivity setting:

Software

Frequency response:

-3 dB points at 300 Hz and 20 kHz (tolerance ± 1 dB)

First order, high-pass speech filter at 300 Hz

Input impedance:

1360 ohm

Signal/Noise ratio:

> 62 dBA with 25 dB headroom

Common mode rejection ratio:

> 55 dB at 100 Hz

> 65 dB at 1 kHz and 10 kHz

Phantom supply:

12 V ± 1 V (max. 15 mA)

Limiter:

Analog limiter, level -8 dB with respect to maximum.

• attack time: 1 ms

• decay time: 300 ms

• threshold at nominal input level

(Only for network controllers of version HW15/xx and 

higher. Hardware information can be obtained using 

the front panel menu.)