Bosch nbn-932 User Manual

en | Installation

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AM18-Q0614 | v1.0 | 2012.03

Installation Manual

Bosch Security Systems

Audio connectors

Connect audio devices to the Audio In and Audio Out 

connectors.

The unit has full-duplex mono audio. The two-way 

communication can be used to connect a speaker or door 

intercom system. The audio input signal is transmitted in sync. 

with the video signal.

Audio input: Line input level (not suitable for direct 

microphone signal); impedance 12 kOhm typical; 1 Vrms 

maximum input voltage.

Audio output: Line output level (not suitable for direct speaker 

connection); impedance 1.5 kOhm minimum; 1 Vrms maximum 

output voltage.

Wiring: Shielded audio connection cable is advised. Observe 

maximum cable lengths for audio line input and output levels.

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