Bosch AUTODOME IP starlight 7000i NDP?7512?Z30, Installation Manual

Page: 61 / 72

AUTODOME IP starlight 7000i Connection | en 61
Bosch Security Systems
Installation Manual
2021-03 | 1.2 |
13.6 Audio Connections (Optional)
The camera is capable of receiving line level input signals and transmitting them over a
network. It is also capable of receiving audio from the same network and sending it as audio
output from the camera. The audio input signal is transmitted in sync with the video signals.
As a result, for example, a door intercom system can be connected at the camera location.
i
Notice!
The line ports of the intercom should be used for transmitting audio signals on the intercom
systems.
The audio line input is not suitable for direct microphone signal connection.
The audio line output is not suitable for direct speaker connection unless using a powered/
amplified speaker with line level input.
Audio Line Input Specifications
The following Line Input specifications should be complied with in all cases.
Max. Input Voltage 1 Vrms
Impedance 9 K Ω (typical)
Shield Bare copper braid: 95% coverage
Internal gain level adjustment is available in case the signal level is too low.
Audio Line Output Specifications
The following Line Output specifications should be complied with in all cases.
Typical Output
Voltage 1 Vrms
Impedance 1.5 K Ω (typical)
Shield Bare copper braid: 95% coverage
Internal gain level adjustment is available in case the signal level is too low.
Wire Specifications
Wire Type Shielded Coax (recommended)
Distance Typically 10 m (33 ft), but depends on the signal level
Gage Typically 22 AWG to connector (P105/P106), but depends on the style of connector used
Shield Bare copper braid: 95% coverage
Center
conductor Stranded bare copper
Note that long distances are more susceptible to introducing noise into the signal.
Audio Line Level Input Connections
1. Remove the 100 Ohm termination resistor from the C+ to C- terminals.
2. Connect the audio line level source to the A (C+) input terminal.
3. Connect the audio signal ground to the Audio_In- (C-) input terminal.