Transcript DCN Stand Alone System - Audio Routing in Insertion Mode

Security Systems BU Communication Systems
Audio routing in Insertion Mode

Open audio path between the Delegate and Chairman
microphones to the unit loudspeakers

Inserting of an external device such as for example an audio
equaliser or audio-mixer gives more possibilities.

The external audio device is connected between the line output
and the line input of the CCU.
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I&O Manual
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Standard Audio Routing
The Digital Congress Network distributes the audio (floor, interpretation,
intercom) from the Central Control Unit to the delegate units through 16
digital channels. The channels are assigned as follows:
Channel Download assignment in the DCN system
Channel Interpret
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
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Floor
Interpret
Interpret
Interpret
Interpret
Interpret
Interpret
DCN SA SD Insertion Mode
Floor
Intercom
Floor
Floor
Floor
Floor
Intercom
Intercom
Equalized Floor Output
Delegate Loudspeakers
Line Output
Intercom
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CCU - Standard mode
Delegate /
Chairman
Microphone

Rec. in
Interpreters Headphone
Unit - loudspeaker.
Delegates Headphone

Channel 0
Master
volume
PC-Control
Equalizer PA
Local PA (MCCU)
Channel 12
Line in
Rec. out
Public
Area
Channel 14
Line out
CCU
volume
Delegate - Unit
loudspeaker
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Channel 13
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CCU - Standard mode
Channel 0:
This is the Floor-sound as sent to the interpreters unit. For protecting and convenience
reasons, this Floor-level is distributed with a dynamic range of 1 dB.
Channel 1 - 11:
In our Stand-alone-System it is possible to assign channels 1 to 11 for Interpretation. In
our System Installation Software Module (LBB 3585) it is possible to assign channels 1
to 15 either as Interpretation, Floor, Intercom or as a mix between this, as shown
above. The channels (1 to 11 and 15) can therefore represent either an interpretation
channel, a floor, or 2 duplex Intercom channels.
Channel 12:
The CCU has a built-in equalizer. Channel 12 is the Floor coming out of the equalizer
and only available one the Audio Media Interface. If the equalizer is activated (indicated
by the green LED ‘on’ on front of the CCU). This equalized Channel is also routed to
the delegate’s loudspeakers Channel 13.
Channel 13:
Floor as distributed to the delegate’s loudspeakers with a dynamic range of 12 dB.
Channel 14:
Line output as available on the back-side of the CCU with a dynamic range of 30 dB.
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CCU - Standard mode
Channel 14:
Line output as available on the back-side of the CCU with a dynamic range of 30
dB.
Channel 15:
1 duplex intercom-channel and one busy-tone channel.
The individual channels can be made externally available via the Audio Media
Interface (LBB 3508). The AMI has 4 analog outputs. Each output can be positioned
via a 15-position rotary selector to channel 0 to 14. Interpretation channels are
distributed with a dynamic range of 1 dB to make recording easy.
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CCU - Standard mode
Delegate /
Chairman
Microphone

Rec. in
Interpreters Headphone
Unit - loudspeaker.
Delegates Headphone

Channel 0
Master
volume
PC-Control
Equalizer PA
Local PA (MCCU)
Channel 12
Line in
Rec. out
Public
Area
Channel 14
Line out
CCU
volume
Delegate - Unit
loudspeaker
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Channel 13
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CCU - Insertion Mode
Rec. out
Delegate /
Chairman
Microphone

X
Interpreters Headphone
Unit - loudspeaker.
Delegates Headphone
Channel 14
Line out
Rec. in

Channel 0
Line in
Master
volume
PC-Control
Equalizer PA
Local PA (MCCU)
Channel 12
CCU
volume
Delegate - Unit
loudspeaker
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Channel 13
I&O Manual
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CCU - Insertion Mode
Insertion Mode
In insertion mode the normal audio path in the CCU from the added microphone
signals to the loudspeakers of the delegate and chairman units is interrupted to allow
connection of an external device such as for example an audio equalizer (mono).
The external audio device is connected between the line output and line input of the
CCU. See the figure below, showing the audio routing in the CCU and external
device.
Notes:
In Insertion mode recording of the line input signal via the recorder output of the
CCU is not longer possible. Only the microphone-signals coming from the connected
microphone units of this CCU.
In Insertion mode a permanent audio channel is used for the line input.
Therefore the number of available interpretation channels is one channel less than in
the standard mode, thus 10 channels instead of 11 in stand-alone and multi CCU
systems.
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Audio routing in Insertion Mode
Rec. out
Delegate /
Chairman
Microphone

Channel 14
Line out
Rec. in
Interpreters Headphone
Unit - loudspeaker.
Delegates Headphone

Channel 0
Line in
(Example)
Audio Mixer
Master
volume
PC-Control
Equalizer PA
Local PA (MCCU)
Channel 12
CCU
volume
Delegate - Unit
loudspeaker
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Channel 13
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Audio routing in Insertion Mode
Rec. out
Delegate /
Chairman
Microphone

Channel 14
Line out
Rec. in
Interpreters Headphone
Unit - loudspeaker.
Delegates Headphone

Channel 0
Line in
(Example)
Audio Mixer
Master
volume
PC-Control
Equalizer PA
Local PA (MCCU)
Channel 12
CCU
volume
Delegate - Unit
loudspeaker
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Channel 13
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Dip-switch settings in CCU for different
audio routing Modes
Mode
Standard
off
off
mix-minus
on
off
off
on
on
on
Insertion
standard
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Dipswitch 2 Dipswitch 3
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Dip-switch settings in CCU for different
audio routing Modes
Dip-switch settings in CCU for different audio routing modes.
The setting of dip-switches 2 and 3 of Dip-switch S9 on the Trunk Communication
Board of the CCU (see DCN Installation and Operating manual) determine the
different modes.
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Audio routing in Insertion Mode
End of section
 Robert Bosch GmbH
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