Bosch Appliances NDN-921 5.3.2Mount the camera, Alarm output, Audio in / Audio out

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Alarm output

Use the alarm relay output for switching external devices such as lamps or sirens.

–Maximum voltage 30 VAC or 40 VDC; maximum 0.5 A continuous, 10 VA.

–Refer to the cable tree table to identify the wire colors for connecting the alarm output.

–In the menu system, configure the relay output to operate as either normally open (NO) or normally closed (NC).

Audio in / Audio out

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. Refer to the cable tree table to identify the wire colors for connecting the audio input and output. 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.

5.3.2Mount the camera

1.Secure all cables.

2.Route the cable tree from the camera around the rear of the camera module mounting base.

3.For surface mounted units, secure the camera module mounting base to the surface mounting box with the three supplied screws.

4.For flush mounted units, secure the camera module mounting base to the ceiling or wall.

Bosch Security Systems Installation and Operation Manual AR18-10-B013 v1.52 2011.06