Bosch NBN-498-11P Operation Manual - Page 30
Audio connectors
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30 en | Installation 5.4 Audio connectors Dinion2X IP Camera Line GND AUDIO IN ALARM 1 2 3 4 5 6 VIDEO AUDIO OUT - + E 12 VDC T 24 VAC H P o E DATA 1 2 3 4 5 6 Figure 5.4 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 9 kOhm typical; 5.5 Vpp maximum input voltage. Audio output: Line output level (not suitable for direct speaker connection); impedance 16 Ohm minimum; 3 Vpp maximum output voltage. Wiring: Shielded audio connection cable is advised. Observe maximum cable lengths for audio line input and output levels. AR18-10-B006 | v1.1 | 2010.06 Installation and Operation Manual Bosch Security Systems