Each audio input can contain a maximum of 2 channels (L and R). The digital audio expander
does not change stereo signals in mono signals.
Use the configuration menu to configure the audio inputs of the digital audio expander (refer
to PRS-4DEX4 Digital Audio Expander, page 194).
Audio outputs
You can connect external digital audio devices to the audio outputs of the digital audio
expander. The digital audio expander has two audio outputs.
Each audio output has:
– 1 XLR plug for AES/EBU signals. The electric circuits behind the XLR plugs contain
transformers.
– 1 cinch socket for SPDIF signals.
Notice!
You cannot use the AES/EBU and SPDIF connections of the same audio output at the same
time.
Figure 6.14: Audio output, connection
Pin Type Signal Description
1 XLR Xternal Shield/ground
2 Live Positive
3 Return Negative
4 Cinch Live Signal in
5 Return Shield/ground
Table 6.10: Audio input, connection
Each audio output can contain a maximum of 2 channels (L and R). The digital audio expander
does not change stereo signals in mono signals.
Use the configuration menu to configure the audio outputs of the digital audio expander (refer
to PRS-4DEX4 Digital Audio Expander, page 194).
Control inputs and outputs
The digital audio expander has eight control inputs and five control outputs. With the control
inputs remote systems can control the digital audio expander. With the control outputs, you
can send the condition of the digital audio expander to external devices. The control inputs
and outputs of the audio expander and the digital audio expander do the same (refer to
LBB4402/00 Audio Expander, page 117).
Conference System Connection | en 121
Bosch Security Systems B.V. Operation Manual 2013.11 | V2.0 | DCN-NG_OM_V4.x
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