security systems bu communication systems st/seu-co 1 dcn sa sd insertion mode 16.11.2004 audio...

Security Systems BU Communication Systems

DCN SA SD Insertion Mode16.11.2004 ST/SEU-CO 1

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.

I&O Manual



Standard Audio RoutingThe 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 Floor Intercom0 Floor Floor1 Interpret2 Interpret3 Interpret4 Interpret5 Interpret6 Interpret7 Floor8 Floor9 Floor

10 Intercom11 Intercom12 Equalized Floor Output13 Delegate Loudspeakers14 Line Output15 Intercom



CCU - Standard mode

Delegate /ChairmanMicrophone

Delegate - Unitloudspeaker

Equalizer PALocal PA (MCCU)

CCUvolume

Line out

Line in

Public Area

Channel 0Interpreters HeadphoneUnit - loudspeaker.Delegates Headphone

Channel 12

Channel 13

Channel 14

Rec. in

Rec. outMastervolume PC-Control



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.



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.



CCU - Standard mode




CCUvolume

Line out

Line in

Public Area


Channel 12

Channel 13

Channel 14

Rec. in

Rec. outMastervolume PC-Control



Line out

Channel 14

Rec. out

CCU - Insertion Mode




CCUvolume

Line in


Channel 12

Channel 13

Rec. in

Mastervolume PC-Control

I&O Manual

X



CCU - Insertion Mode

Insertion ModeIn 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.



Line out

Channel 14

Rec. out


(Example)

Audio Mixer




CCUvolume

Line in


Channel 12

Channel 13

Rec. in




Dip-switch settings in CCU for different audio routing Modes

Mode Dipswitch 2 Dipswitch 3

Standard off off

mix-minus on off

Insertion off on

standard on on



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.




End of section

Robert Bosch GmbH

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