2. Security Systems BU Communication Systems ST/SEU-CO 1 DCN SA SD Insertion Mode 16.11.2004 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

3. Security Systems BU Communication Systems ST/SEU-CO 2 DCN SA SD Insertion Mode 16.11.2004 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

4. Security Systems BU Communication Systems ST/SEU-CO 3 DCN SA SD Insertion Mode 16.11.2004 CCU - Standard mode Delegate / Chairman Microphone Delegate - Unit loudspeaker Equalizer PA Local PA ( MCCU )  CCU volume Line out Line in  Public Area Channel 0 Interpreters Headphone Unit - loudspeaker. Delegates Headphone Channel 12 Channel 13 Channel 14 Rec. in Rec. out Master volume PC-Control

5. Security Systems BU Communication Systems ST/SEU-CO 4 DCN SA SD Insertion Mode 16.11.2004 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.

6. Security Systems BU Communication Systems ST/SEU-CO 5 DCN SA SD Insertion Mode 16.11.2004 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.

7. Security Systems BU Communication Systems ST/SEU-CO 6 DCN SA SD Insertion Mode 16.11.2004 CCU - Standard mode Delegate / Chairman Microphone Delegate - Unit loudspeaker Equalizer PA Local PA ( MCCU )  CCU volume Line out Line in  Public Area Channel 0 Interpreters Headphone Unit - loudspeaker. Delegates Headphone Channel 12 Channel 13 Channel 14 Rec. in Rec. out Master volume PC-Control

8. Security Systems BU Communication Systems ST/SEU-CO 7 DCN SA SD Insertion Mode 16.11.2004 Line out Channel 14 Rec. out CCU - Insertion Mode Delegate / Chairman Microphone Delegate - Unit loudspeaker Equalizer PA Local PA ( MCCU )  CCU volume Line in  Channel 0 Interpreters Headphone Unit - loudspeaker. Delegates Headphone Channel 12 Channel 13 Rec. in Master volume PC-Control I&O Manual X

9. Security Systems BU Communication Systems ST/SEU-CO 8 DCN SA SD Insertion Mode 16.11.2004 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.

10. Security Systems BU Communication Systems ST/SEU-CO 9 DCN SA SD Insertion Mode 16.11.2004 Line out Channel 14 Rec. out Audio routing in Insertion Mode (Example) Audio Mixer Delegate / Chairman Microphone Delegate - Unit loudspeaker Equalizer PA Local PA ( MCCU )  CCU volume Line in  Channel 0 Interpreters Headphone Unit - loudspeaker. Delegates Headphone Channel 12 Channel 13 Rec. in Master volume PC-Control

11. Security Systems BU Communication Systems ST/SEU-CO 10 DCN SA SD Insertion Mode 16.11.2004 Line out Channel 14 Rec. out Audio routing in Insertion Mode (Example) Audio Mixer Delegate / Chairman Microphone Delegate - Unit loudspeaker Equalizer PA Local PA ( MCCU )  CCU volume Line in  Channel 0 Interpreters Headphone Unit - loudspeaker. Delegates Headphone Channel 12 Channel 13 Rec. in Master volume PC-Control

12. Security Systems BU Communication Systems ST/SEU-CO 11 DCN SA SD Insertion Mode 16.11.2004 Dip-switch settings in CCU for different audio routing Modes Mode Dipswitch 2Dipswitch 3 Standardoffoff mix-minusonoff Insertion off on standardonon

13. Security Systems BU Communication Systems ST/SEU-CO 12 DCN SA SD Insertion Mode 16.11.2004 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.

14. Security Systems BU Communication Systems ST/SEU-CO 13 DCN SA SD Insertion Mode 16.11.2004 Audio routing in Insertion Mode End of section  Robert Bosch GmbH All rights are reserved. Reproduction or passing on to third parties in whole or in parts is prohibited without the written consent of the copyright owner.