Control output
Condition of
C-NO contact
(Normally Open)
C-NC contact
(Normally Closed)
4
Channel attached to
audio input 4
Engaged (contact
closed)
Not engaged (contact
open)
5
Optical network
Not available
Available
Table 6.8: Control output conditions
PRS-4DEX4 Digital Audio Expander
Audio inputs
You can connect external digital audio sources to the audio inputs of the digital audio
expander. The digital audio expander has two audio inputs.
Each audio input has:
–
1 XLR socket for AES/EBU signals. The electric circuits behind the XLR sockets contain
transformers.
–
1 cinch socket for SPDIF signals.
Notice!
You cannot use the AES/EBU and SPDIF connections of the same audio input at the same
time.
In 1
Out 1
AES/EBU-SPDIF
2
3
4
1
5
Figure 6.13: Audio input, 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 6.9: Audio input, connection
Notice!
When the interlock mode is None (refer to DCN-IDESK Interpreter Desks, page 221), the audio
inputs of the digital audio expander are disabled for translation channels only. Audio input
channels can route to floor channels.
6.4
120 en | Connection
Conference System
2013.11 | V2.0 | DCN-NG_OM_V4.x
Operation Manual
Bosch Security Systems B.V.
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