Bosch Digital Congress Network User manual

DCN
Digital Congress Network
Data Brochure
Communication you can rely on

DCN Data Brochure | Contents |1
1. Introduction
1.1 Digital Congress Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Contribution Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Interpretation and Language Distribution Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Central Control Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.5 Application Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.6 Information Distribution Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.7 Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2. DCN Contribution Equipment
2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.2 Table-Top Concentus Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2.3 Suitcases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.4 Table-Top Discussion Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2.5 Flush-Mounted Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
2.6 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
3. Interpretation and Language Distribution Equipment
3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
3.2 Simultaneous Interpretation Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
3.3 Wired Language Distribution Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
3.4 Headphones and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
4. DCN Central Control Equipment
4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
4.2 Control Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
4.3 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
4.4 Extension Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
4.5 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
4.6 Personal Computers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
5. Application Software
5.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
5.2 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
5.3 Application Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
5.4 Multi-CCU Control Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
6. DCN Information Displays
6.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
6.2 Hall Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

7. Cameras and Accessories
7.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
7.2 Allegiant Video Switcher System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
7.3 Dome Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
7.4 Monitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
8. Installation Equipment
8.1 Cables and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
9. Technical Data
9.1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Index
Alphanumeric Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
2|Contents |DCN Data Brochure
Registered Trademarks
Microsoft, MS-DOS and Windows are registered trademarks of the Microsoft Corporation.
Pentium is a registered trademark of the Intel Corporation.
Compaq is a registered trademark of the Compaq Computer Corporation.
IBM, Operating System/2 and OS/2 are registered trademarks of the International Business Machines Corporation.

DCN Data Brochure | Introduction |3
1. Introduction
1.1 Digital Congress Network
World’s first digital congress system
The Bosch Digital Congress Network (DCN) brings the
benefits of innovative digital technology to discussion,
conference and congress systems. Digital signal process-
ing and transmission via a simple network system not
only offers great improvements in audio quality, but
simplifies operation and installation. The DCN control
system has the option of modern, user-friendly software
to setup and control conferences, although it is just as
easy to run an operator-free configuration.
DCN provides flexible management facilities for all
types of conferences, from small, informal gatherings to
international, multi-lingual congresses with thousands
of delegates. It is the first entirely digital system of its
kind, and offers versatility, high audio quality data
transmission security while providing complete control
over conference proceedings.
Digital performance with user-friendly software control
Every requirement of modern conference management
is met. There are facilities from basic microphone man-
agement, through delegate identification and registra-
tion, electronic voting, information distribution and
display, up to extensive simultaneous interpretation.
The DCN is above all a user-friendly system. A single
operator can, with the help of the appropriate software
modules, control and monitor even the largest of con-
gresses.
Modular system approach
By simply daisy-chaining the modular DCN units, any
configuration can be put together. Although the diagram
on the right shows a simple discussion system, the
modular structure of the DCN system means all levels
of conference can be catered for without any difficulty.
Systems can be expanded by adding more contribution
equipment and introducing PC control with software
modules.

Complete range of equipment
The full range of DCN products includes contribution
units, central control units, simultaneous interpretation
and language distribution equipment, application-
specific software modules, information display systems
and installation equipment. This is complemented by
external equipment such as video and dot matrix dis-
plays, PCs, monitors, booster amplifiers, loudspeakers
and printers, all of which are fully compatible and easily
integrated into the DCN system.
Advanced digital technology
Signal transmission and processing is handled by
proven digital audio technology. An example of this
is the high-performance ‘Bitstream’ system used for
analogue-to-digital conversion in delegate microphone
units. This technology is integrated into custom single-
chip analogue-to-digital and digital-to-analogue con-
verters around which most DCN units are based. Other
ICs specially developed for this application include
dedicated protocol converter chips. The system
combines the highest levels of functionality and
performance in an extremely compact design.
The diagram above shows how the ‘building blocks’
of the DCN fit together. The Audio Communication
Network (ACN) family of protocol converter chips are
simply connected to the network cabling carrying the
digital signal. In addition to bi-directional protocol
converters for contribution equipment and central
control units, there is also a uni-directional ACN chip
for channel selection units for distribution only.
The Praedics (Professional Audio Encoder Decoder
Integrated Circuits) are combined analogue-to-digital
and digital-to-analogue converters. These devices
convert the digital signal from the DCN to audio, and
convert the contributor’s audio signal to digital, ready
for protocol conversion by the ACN chip.
Excellent audio quality
The result of this advanced digital technology is excel-
lent audio performance with no loss in signal quality or
level during transmission. Subsequently, each delegate
receives an audio signal of consistently high quality,
which makes a significant contribution to speech intel-
ligibility. DCN virtually eliminates problems associated
with conventional systems, such as background noise,
interference, distortion and crosstalk.
Reduced installation costs
Fast, cost-saving installation is an important benefit of
DCN digital technology. A thin, flexible, twin-coaxial
cable carries all the system’s digital signals, therefore
eliminating the need for costly and vulnerable multi-
core cables used in conventional analogue installations.
This twin-coaxial cable can easily be run through exist-
ing ducting and cable conduits. It can simultaneously
carry up to 16 high-quality contribution channels,
16 high-quality distribution channels - typically inter-
pretation languages - plus 10 channels for messages and
other data.
4|Introduction |DCN Data Brochure
Simple ‘daisy-chain’ installation characterises the DCN system.
PC-bus
ACN 1
LBB 3510/00
Network card
DCN Discussion
Delegate/chairman/Interpreter
(contribution & distribution)
Delegate/chairman unit (Concentus)
LBB 3512
Data Distribution Board
Central Control Unit
e.g. Hall Display
Channel select unit
(language distribution)
ACN 1 - up/down
ACN 2 - up/down
ACN 3 - down only
ACN 1
ACN 3
ACN 1
ACN 1
ACN 1
proc. RAM
Flash
E-PROM
DSP
proc
ACN 3
DAC
DAC
ACN 1
Praedic
Praedic
Praedic
Praedic
Control
Panel Personal
Computer
The ‘building blocks’ of DCN

Simplified wiring
Gone are the days of complex wiring through bulky
trunking. The diagram above shows the cable used for
DCN signal transmission, and the specially moulded
6-pole connectors (configured according to the 6-pin
DIN standard).
The same cable is used to transport signals to all
contribution units throughout the system, and can
be ‘tapped’ at any desired point to connect extra
contribution units or other DCN equipment, thus
giving rise to a ‘branched-tree’ topology.
In this way, future extensions to the system capacity,
such as adding extra microphone units or increasing
the number of language channels, do not require alter-
ations to the existing system cabling. The power is also
supplied to all units via two wires in the same cable.
Installation is further simplified and speeded up by the
use of splitters and ready-made cables with sturdy,
moulded connectors, thus allowing easy insertion of
contribution equipment at any desired point in the sys-
tem cabling. These easy-to-connect accessories are used
for both fixed and portable installations, making DCN
a versatile system that can be installed quickly and effi-
ciently in any conference situation.
1.2 Contribution equipment
Contribution equipment is the term used to describe
the units via which participants can contribute to a
conference. Depending on the type of contribution unit,
participants can access facilities to listen, speak, register
a request-to-speak, receive screen messages, hold con-
versations with other participants via an intercom, take
part in electronic voting sessions and receive simultane-
ous interpretation of the floor language.
DCN Discussion units are specially tailored for smaller
gatherings and meetings, and offer a high level of func-
tionality and digital convenience, as well as their own
distinctive styling.
The most basic Concentus Contribution unit is
equipped with a microphone with an on/off button,
loudspeaker, voting keys and LED status indicators.
More advanced units incorporate features such as
graphic LCD screens, language channel selectors,
softkeys and chip-card readers. Chairman units have
a microphone priority system that temporarily mutes
all active delegate microphones.
DCN Data Brochure | Introduction |5
The twin-coaxial cable and 6-pole connectors
Table-top Concentus units
for portable and flexible installations

Table-top or flush-mounting
Contribution units can be used freestanding on a table-
top, or flush mounted in desks, seat backs or armrests.
Other microphone types such as gooseneck, lavalier and
hand-held are also available, allowing contribution
from non-seated participants such as guest speakers.
While table-top units are suitable for portable installa-
tions and for flexible system configurations where
requirements regularly change, the flush-mounted units
are ideal for permanent installation into conference
facility furnishings.
Additional support equipment is also available, such as
microphone stands, mounting facilities, suitcases for
portable DCN systems and interface boards.
1.3 Interpretation and Language Distribution Equipment
Simultaneous interpretation and language distribution
The DCN system offers comprehensive facilities for
simultaneous interpretation and distribution of the
interpretations to conference participants, which allows
it to meet the demands of international, multi-lingual
conferences and congresses.
All interpretation facilities are fully integrated into the
basic system concept, with the digital distribution of the
interpretations using the same trunk-line cabling as all
other system functions. It is therefore a relatively simple
task to integrate language facilities into existing DCN
systems.
The simultaneous interpretation system enables direct
or auto-relay interpretation modes to cater for less well-
known languages. Each interpreter desk has an output
for the normal (primary) language and another for
alternative languages.
Up to 15 different languages
The DCN interpreter desk can accommodate up to
15 different language channels, plus the original floor
language. A maximum of six desks can be installed per
interpreter booth. It can be used stand-alone or as part
of a comprehen-sive system.
When used stand-alone, the built-in microprocessor is
manually programmed to allocate language channels,
channel routing and interlocks. In operator-controlled
systems, the desk is used in combination with DCN
dedicated software (the Simultaneous Interpretation
module LBB 3572) to form a completely integrated
interpretation network.
6|Introduction |DCN Data Brochure
Flush-mounted units for permanent conference facilities
DCN discussion units for smaller gatherings and meetings

Wired or wireless language distribution
DCN offers a choice of language distribution systems.
Language distribution can be carried out using the
DCN system cabling, and languages are accessed and
selected by means of channel selector units or delegate
units with built-in channel selection facilities. There is
also a wireless, digital infra-red system, Integrus, where
the languages are distributed throughout the conference
venue by infra-red transmitters and radiators, and
accessed by means of personal infra-red receivers with
headphones.
1.4 Central control equipment
The Central Control Unit (CCU) forms the heart of the
congress management system. The CCU can operate
stand-alone to provide automatic conference control,
or be accessed by an operator via a PC when more
extensive management is required.
All CCUs can control up to 240 contribution units,
such as delegate and chairman units, interpreter desks
and audio interface units. If more capacity is required,
Multi-CCUs can be connected, each of which increases
the system capacity by 240 contribution units. CCUs
can power a number of contribution units. The maxi-
mum number depends on the type of CCU, and the
type of contributiion units used in the application.
Fully-automatic conference proceedings
The basic CCU does not require operator control, and
automatically manages conference proceedings. It offers
basic microphone management, simultaneous interpre-
tation and electronic voting facilities, as well as 15 Hi-Q
digital audio channels, ten data channels and four com-
munication channels. This allows effective unsuper-
vised control of even large, international conferences.
Operator control via a PC
The extended CCU offers all the facilities of the basic
model, but also allows operator control via a PC. The
user can access the extensive family of DCN software
modules, each with a specific function in controlling
and monitoring conferences.
This includes advanced simultaneous interpretation
and microphone management, message generation and
display, six kinds of voting, intercom, creating a dele-
gate database, attendance registration. In the event of
PC failure this CCU will revert to a default operation
mode, identical to that of the basic CCU, thus enabling
conference proceedings to continue.
DCN Data Brochure | Introduction |7

1.5 Application software
A comprehensive range of software modules is available
for use with PC-controlled DCN systems. These modules
run in Microsoft Windows, and integrate conference
preparation, management and control into this versatile
graphical computer environment. Any combination of
modules can be loaded according to specific system
requirements. This software is generally used in larger
scale systems where operator control is required.
The PC running the software is connected to the DCN
system and therefore has direct links with contribution,
interpretation and control equipment via the network
cabling. Thus all aspects of conference management can
be brought to a single point of control, which leads to
ease of use, efficiency and data distribution.
Running DCN software under Windows
Windows permits more than one application to be run
at a time and information transfer between applications
is possible. As many DCN software modules interact
with each other and rely on shared data, the multi-
tasking aspect of Windows is an important feature.
The Windows graphical user interface is also highly
visual, and the DCN software also makes full use of this
capability to control conferences. DCN elements such
as contribution units are represented by icons, and
these can be arranged and controlled easily using a
mouse. Information such as channel/language assign-
ment and voting results is shown using clear graphical
displays rather than just lines of text.
There is a DCN software module to cover virtually
every imaginable conference requirement. The range
includes:
• Microphone Management
• Synoptic Microphone Control
• System Installation
• Parliamentary Voting
• Multi Voting
• Delegate Database
• Simultaneous Interpretation
• Text/Status Display
• Attendance Registration
• ID-Card Encoding
• Message Distribution
•Intercom
• Video Display
• Camera Control
•OpenInterface
There is also a Multi-CCU control software package,
which runs under OS/2 and allows control of systems
using more than one CCU.
8|Introduction |DCN Data Brochure
Synoptic
Microphone
Control
Simultaneous
Interpretation
Video
Display
ID-Card
Encoding
Microphone
Management
Message
Distribution
Text/Status
Display
System
Installation
StartupDelegate
Database
Multi
Voting
Intercom Attendance
Registration
and Access
Control
Camera
Control
Parliamentary
Voting

1.6 Information distribution equipment
A major strength of the DCN system is its ability to dis-
tribute information to conference participants quickly,
efficiently, and to suit all requirements. A wide range of
display media are supported, from simple LCD personal
screens to video equipment for venue broadcasting.
The Concentus chairman unit and one of the
Concentus delegate units are equipped with a graphic
LCD screen which displays delegate information, voting
time, public and personal messages, microphone status
and multi-lingual user instructions. These screens can
display languages such as Chinese that use non-
European characters. Interpreter desks are equipped
with backlit LCD screens.
Hall displays
Hall displays are the ideal medium for quick and
effective information distribution to a large number of
conference participants. Numeric, alphanumeric or
geographic displays are available, mainly for showing
voting results. TV receivers can also be used. LCD and
CRT video projectors offer high resolution information
distribution.
All systems allow high quality display of any live or
recorded video material, computer-generated graphics
and text, and information generated by DCN software.
1.7 Examples
DCN - the versatile and flexible congress system
To demonstrate the versatility and flexibility of the
DCN, five examples of various types of gatherings and
conferences are given on the following pages. These
examples show the broad spectrum of application pos-
sibilities available with DCN, from informal gatherings
with relatively few delegates and no special require-
ments, through medium-sized conferences which
require microphone control and facilities such as voting
and interpretations, up to major congresses where a
considerable amount of hardware and software support
is required, multi-language facilities have to be provid-
ed, and operator control via a PC is essential.
In all examples, the basic principle of conference con-
trol remains the same, it is only the scale of the network
which changes. The modular construction of DCN
allows this kind of adjustment and expansion to take
place easily and quickly, and without high extra costs;
more delegate units are connected to cater for extra del-
egates, extra functions are provided by adding addition-
al software.
DCN Data Brochure | Introduction |9

Example 1 - basic discussion system
This is a straightforward situation, where a discussion
requires the order and convenience of DCN but only
the most basic of hardware. All delegates speak the
same language, so there is no need for interpretation.
Subsequently no headphones are required, as all dele-
gates receive the same audio signal (the speaker), which
is transmitted via loudspeakers.
Each delegate has exactly the same status, and is provid-
ed with the same equipment; an LBB 3530/00 Standard
Delegate Discussion Unit.
The chairman has a LBB 3533/00 Chairman Discussion
Unit which allows him or her to override all other dele-
gates. This allows them to speak, listen to the speaker
and register a request to speak.
All contribution equipment is connected to the
LBB 3500/05 Basic Central Control Unit. This CCU
supplies power to all delegate units, provides audio
equalisation for all delegate loudspeakers, and is used to
determine the microphone operating mode. No opera-
tor is required.
10 | Introduction |DCN Data Brochure
LBB 3500/05
Basic Central
Control Unit
LBB 3530
Delegate
Discussion Unit LBB 3533
Chairman
Discussion Unit

Example 2 - discussion with voting
The kind of discussion shown in this example is typical
of a local council or board meeting, where some for-
malised structure is required and the need for quick
and efficient decision taking means that an automatic
voting system is required. The Basic CCU, the
LBB 3500/05, is used as a stand-alone conference con-
trol system, providing voting facilities as well as micro-
phone management and power for all contribution
units. A chairman will preside over the meeting and
control the proceedings.
An LBB 3547/00 Chairman Unit is provided, whose
graphic LCD display provides the chairman with speak-
er information, voting results and a description of the
unit softkey functions.
The unit also has microphone priority and can be used
to start, stop and suspend voting, and alter delegate
microphone status.
Each delegate is equipped with an LBB 3544/00; a table-
top delegate unit which allows them to speak, register a
request-to-speak, listen to the speaker, and vote. The
five voting buttons allow parliamentary-, multiple
choice- or audience response voting to take place. The
voting results are sent via the CCU to a numeric hall
display.
DCN Data Brochure | Introduction |11
LBB 3544/00
Delegate Unit LBB 3547/00
Chairman Unit &
ID-card Reader,
Channel Selector
Numeric Hall Display
LBB 3500/05
Basic Central
Control Unit

Example 3 - conference with interpretation
This is a situation typical of a small-scale international
conference, where a number of different countries are
represented and there is no common language. The
number of delegates is greater than in example 2, and
extra facilities such as simultaneous interpretation and
individual information display have to be provided.
All of this can still be comfortably managed by an
LBB 3500/05 Basic CCU, so no system operator is nec-
essary. Additional central control equipment consists of
an LBB 3508/00 Audio Media Interface and Power
Supply Unit which enables external analogue equip-
ment (i.e. for broadcasting or recording) to be connect-
ed to the DCN, and an amplifier to provide a public
address facility to delegates.
A rostrum for guest speakers is equipped with a flush-
mounted microphone, loudspeaker, channel selector
and headphones. All contributing delegates present are
provided with a LBB 3546/00 Delegate Unit with Chip-
Card Reader, graphic LCD Screen and Channel Selector,
and lightweight headphones. This allows delegates to
speak, vote, select the language of their choice and lis-
ten to it through the headphones. There is one chair-
man controlling the conference proceedings, using an
LBB 3547/00 Chairman Unit. Additional equipment
includes hall loudspeakers and two Hand-Held
Microphones with Floor Stands (LBB 3536/00 and
LBC 1221/01 respectively), connected to the DCN by
means of LBB 3535/00 Dual Audio Interface Units.
The interpreters are located in a booth and equipped
with LBB 3520/10 Interpreter Units with backlit LCD
Display and Interpreter Headphones (LBB 9095/30).
Delegates can select which channel they wish to hear
through their headphones by means of a channel selec-
tor switch on their delegate units.
Other people present at the conference in a non-con-
tributing role can also listen to any of the interpreta-
tions through headphones and via the LBB 3524/xx
Electronic Channel Selector Panel, built-in to the chair
armrests. This unit is purely for listening purposes, and
has no microphone or voting facilities.
12 | Introduction |DCN Data Brochure
LBB 3546/00
Delegate Unit &
ID-card Reader,
LCD Display &
Channel Selector LBB 3547/00
Chairman Unit &
ID-card Reader,
LCD Display &
Channel Selector
LBB 3524
Electronic Channel
Selector Unit
Headphones Loudspeaker
Sound Column
Headphones
LBB 9095
Interpreter
Headphones
LBB 3520
Interpreter Unit &
LCD Display
LBB 3500
Basic Central Control Unit
LBB 3508
Audio Media Interface Unit
Mixing Amplifier
LBB 3535
Dual Audio Interface Unit LBB 1215
Universal
Microphone
Clamp LBC 1221
Floor Stand
LBB 3536
Hand Microphone
LBB 3538
Loudspeaker Panel
LBB 3524
Electronic Channel Selector Unit
LBB 3537
Microphone & Control Panel
Headphones
LBB 3535
Dual Audio Interface Unit

Example 4 - conference with PC control
The venue and number of participants is similar to exam-
ple 3, but extra facilities are provided by the addition of a
PC (with DCN application software modules), a wireless
language distribution system and an alphanumeric display
for showing voting results. The LBB 3500/15 Extended
CCU carries out core control functions, and this is comple-
mented by the conference management facilities available
to the operator via the appropriate application software.
The use of the PC and the relevant software modules
allows electronic identification and access control for
contributing delegates, via a card reader with or without
PIN code. All contributing delegates use the
LBB 3546/00 Delegate Unit, which incorporates a Chip-
Card reader facility. The chip-cards are encoded using
the Chip-Card Encoder software module and the
LBB 3557 Chip-Card Encoder.
An infra-red transmission system is used to distribute
the interpretation languages to the seated non-con-
tributing delegates. The Infra-Red Transmitter and
strategically-located infra-red radiators are used to dis-
tribute the available languages throughout the confer-
ence venue. Each non-contributing delegate is equipped
with an infra-red receiver and headphones, and can
select the language of his/her choice by means of a
channel selection facility on the receiver.
The software modules running on the system PC would
typically include the following:
• Startup - essential in all DCN software driven
applications
• System Installation - to provide configuration infor-
mation for other software modules
• Microphone Management or Synoptic Microphone
Control - to configure and control delegate micro-
phone status and determine microphone operating
mode. Both give on-screen status
• Delegate Database - to compile a data- base on con-
ference participants and specify conference-related
parameters such as access requirements
• Multi Voting - to allow different kinds of voting
including parliamentary voting
• Simultaneous Interpretation - to provide up to
15 simultaneous interpretations of the floor language
• Attendance Registration - to provide electronic access
control and a means of delegate registration
• Message Distribution - to allow the
generation of messages to individuals or groups
• ID-Card Encoder
DCN Data Brochure | Introduction |13
LBB 3546/00
Delegate Unit &
ID-card Reader,
LCD Display &
Channel Selector LBB 3547/00
Chairman Unit &
ID-card Reader,
LCD Display &
Channel Selector
Infra-red
Receiver Headphones Loudspeaker
Sound Column
Headphones
LBB 9095
Interpreter
Headphones
LBB 3520
Interpreter Unit &
LCD Display
LBB 3500
Basic Central Control Unit
LBB 3508
Audio Media Interface Unit
LBB 4502/XX
Integrus Transmitter
Mixing Amplifier
LBB 3535
Dual Audio Interface Unit LBB 1215
Universal
Microphone
Clamp LBC 1221
Floor Stand
LBB 3536
Hand Microphone
LBB 3538
Loudspeaker Panel
LBB 3524
Electronic Channel Selector Unit
LBB 3537
Microphone & Control Panel
Headphones
LBB 3535
Dual Audio Interface Unit
Infra-red Radiator
Headphones

Example 5 - large-scale international conference
A typical example of a large-scale, high-end interna-
tional conference with many contributing delegates,
a chairman and the need for multiple languages. The
venue is an auditorium with theatre-style seating and
a podium for the chairman, board and guest speakers.
Each participant on the podium is equipped with a per-
sonal colour liquid crystal TV, flush-mounted micro-
phone unit, channel selector unit, voting control panel
with LCD screen, loudspeaker panel and headphones.
Each delegate is provided with a channel selector unit,
voting control panel, headphones and hand-held micro-
phone, all of which are built-in to the arm rest of the
seat. The headphones allow each participant to listen to
the interpretation of their choice, selected using the
LBB 3524/xx Electronic Channel Selector Panel.
These interpretations are generated by interpreters in the
five interpretation booths, and the distribution of the
interpretations is monitored by the Simultaneous Inter-
pretation software module running on the system PC.
The LBB 3500/15 CCU is used in conjunction with an
LBB 3508/00 Audio Media Interface and Power Supply
Unit, which enables external analogue equipment (i.e.
for broadcasting or recording) to be connected to the
DCN. In addition, an amplifier is connected to provide
a sound reinforcement facility for conference delegates.
To enable visual monitoring of the proceedings, control
signals generated by the Synoptic Microphone Control
and Microphone Management DCN software modules
are used by the Camera Control Software and the
LTC 8200 Allegiant Video Switcher to activate a
G3ACS5C dome camera, which moves and captures the
speaking delegate. The image can be displayed on large
audience displays such as a Vidiwall, as well as TVs,
other monitors and projection screens.
The LTC 0450/51 colour camera gives a fixed-position
overview of the conference venue. With up to 16 camera
inputs on the Allegiant Video Switcher, it is easy to
cover every delegate position in the hall.
Additional equipment includes loudspeakers and a
public video display for showing voting results (in
alphanumeric and graphic form), messages (such as
channel/language configuration) and microphone
information. A rostrum for guest speakers is equipped
14 | Introduction |DCN Data Brochure
G3ACS5C
Dome camera
Headphones
LBB 9095
Interpreter
Headphones
LBB 3520
Interpreter Unit &
LCD Display
LBB 3500
Basic Central Control Unit
LBB 3508
Audio Media Interface Unit
Mixing Amplifier
Headphones
LBB 3538
Loudspeaker Panel
LBB 3524
Electronic Channel Selector Unit
LBB 3537
Microphone & Control Panel
Headphones
LBB 3535
Dual Audio Interface Unit
Loudspeaker
Sound Column
LBB 3536
Hand Microphone
LTC 0450
Colour Camera
LBB 3524
Electronic Channel
Selector Unit
LBB 3541
Delegate Voting
Control Panel
LTC 8555
Allegiant Keyboard LTC 8200
Allegiant Video
Switcher
LTC 2814
High-resolution
Colour Monitor
Personal Display
LBB 3538
Loudspeaker
Panel
LBB 3524
Electronic Channel
Selector Unit
LBB 3542
Delegate Voting
Control Panel
Public Video Display

with flush-mounted microphone, loudspeaker,
channel selector and headphones.
The software modules running on the system PC would
typically include:
• Microphone Management or Synoptic Microphone
Control - to configure and control delegate micro-
phone status, determine microphone operating
mode, and generate control signals for the Allegiant
Video Switcher
• Video Display - to allow video-oriented displays to
show conference-related information
• Startup
• System Installation
• Delegate Database
• Simultaneous Interpretation
• Multi Voting
• Message Distribution
• Attendance Registration
• ID-Card Encoder
• Camera Control
Example 6 - conference with remote interpretation
This example shows a conference that enables real-time
language interpretation at a remote location using the
LBB 3513 Analog Audio Input/Output (AIO) Module.
This saves time and reduces costs since interpreters no
longer have to be accommodated at the DCN site itself.
One AIO module per interpreter is used, and a telephone
coupler.
The floor or chosen language is sent to the interpreter
via the telephone coupler, and the translation is
returned via the coupler and AIO module, and distributed
throughout the DCN system. Conventional telephone
lines providing basic telephone speech can be used, or
for higher speech intelligibility, ISDN (recommended).
The contribution units and other equipment illustrated
above are as used in example 3.
The DCN AIO module provides the interface between
DCN systems and external analog audio signals.
Other application possibilities using this module
include linking different DCN systems to allow sharing
of interpretations, and offering extra scope for recording
translations and distributing external music and speech.
The AIO module can also interface with a Video
Conference System to make simultaneous interpretation
as lifelike as possible.
DCN Data Brochure | Introduction |15
LBB 3546/00
Delegate Unit &
ID-card Reader,
LCD Display &
Channel Selector LBB 3547/00
Chairman Unit & ID-card
Reader, LCD Display &
Channel Selector
Headphones
LBB 9095
Interpreter
Headphones
LBB 3520
Interpreter Unit &
LCD Display
LBB 3500
Basic Central Control Unit
LBB 3508
Audio Media Interface Unit
Mixing Amplifier
LBB 3538
Loudspeaker Panel
LBB 3524
Electronic Channel Selector Unit
LBB 3537
Microphone & Control Panel
Headphones
LBB 3513/00
Analog Audio Input/
Output Module
Telephone
Coupler
Telephone
Handset
Telephone
Handset
Telephone
Headset
Interpreter Site

16 | Introduction |DCN Data Brochure

DCN Data Brochure | DCN Contribution Equipment |17
2. DCN Contribution
equipment
2.1 Overview
Introduction
DCN contribution units are available in table-top or
flush-mounting configurations. This section starts with
table-top units and accessories. Information on flush-
mounting units begins on page 18.
Table-top units
There are two types of table-top contribution units;
DCN Concentus units and discussion units. Concentus
units are typically used for larger congresses and confer-
ences, whereas discussion units are more tailored for
smaller gatherings and meetings. Discussion units have
their own distinctive styling and are slightly smaller than
conference units. They do not have graphic displays,
voting, access registration or intercom facilities, but
otherwise offer the same high level of functionality
and digital convenience as Concentus units.
DCN table-top contribution units are ideal when a
flexible system configuration or portable conference
facilities are required. All units can be easily plugged into
or removed from the system cabling, which leads to
quick and efficient setting up of the conference system.
DCN Concentus units
can also be flush-mounted for
convenience in more permanent
installations. The
Concentus units have a convenient pluggable micro-
phone (supplied separately) available in standard stem
length and extended stem length versions. All the contri-
bution units have flexible microphone stems for ease of
use The units can be free-standing or fixed using mount-
ing screws. Storage and transport is further simplified by
special rugged suitcases that can accommodate complete
DCN systems.
The units can be connected in a simple, economical daisy
chain configuration. Alternatively, they can be connected
using a single thin cable (and trunk splitter). This ‘clean’
configuration is especially advantageous for TV coverage,
where the backs of the units are on show.
Table-top contribution units range from standard
delegate units to delegate units with chip-card reader,
graphic LCD screen and channel selector, up to chairman
units with a priority key and advanced softkey options.
All Concentus units also provide voting facilities, which
allow contributing delegates to take part in the decision
making process, a vital aspect of modern conferencing.
DCN contribution equipment
Table-top Concentus units (with uni-directional, flexible microphone and built-in loudspeaker) and accessories
Voting LCD Channel Chip-card Headphone/headset
buttons display selector reader volume control Comments/description Page:
LBB 3544/00 • Standard delegate unit 19
LBB 3545/00 • • • Delegate unit with channel selector 20
LBB 3546/00 • • • • • Delegate unit with graphic LCD and chip-card reader 21
LBB 3547/00 • • • • • Chairman unit with graphic LCD and chip-card reader 23
LBB 3555/00 Intercom handset and cradle 24
LBB 3549/00 Pluggable microphone (standard stem) 36
LBB 3549/50 Pluggable microphone (extended stem) 36
Table-top discussion units (with uni-directional, flexible stem microphone and built-in loudspeaker) and accessories
Voting LCD Channel Chip-card Headphone
buttons display selector reader Volume control* Comments/description Page:
LBB 3530/00 • Standard delegate discussion unit 25
LBB 3530/50 • Long microphone stem version of LBB 3530/00 25
LBB 3531/00 • • Delegate unit with channel selector 26
LBB 3531/50 • • Long microphone stem version of LBB 3531/00 26
LBB 3533/00 • Chairman unit 27
LBB 3533/50 • Long microphone stem version of LBB 3533/00 27
LBB 3534/00 • • Chairman unit with channel selector 28
LBB 3534/50 • • Long microphone stem version of LBB 3534/00 28
* All discussion units are equipped with two headphone sockets and one volume control. They have no headset connection.

Flush-mounted panels and connection units
Mic. Voting LCD Chip-card
button buttons display reader Comments/description Page:
LBB 3527/00 Table-top housing for LBB 3538/00
or two flush-mounted units 41
LBB 3535/00 Dual audio interface unit 32
LBB 3536/00 • Hand-held microphone 34
LBB 3536/10 • Hand-held microphone with coiled cable 34
LBB 3537/00 • Microphone with control panel 35
LBB 3537/10 • Chairman priority control panel 37
LBB 3537/50 • Microphone with extended stem length and control panel 35
LBB 3537/20 • Microphone Control Panel 36
LBB 3549/00 Pluggable microphone 36
LBB 3549/50 Pluggable microphone with extended stem length 36
LBB 3538/00 Loudspeaker panel 37
LBB 3540/15 Multi-purpose connection unit 38
LBB 3541/00 • Delegate voting control panel 39
LBB 3542/00 • • Delegate/chairman voting panel with display 39
LBB 3542/20 Delegate/chairman voting panel with cyrillic display 39
LBB 3543/15 • Chip-card reader panel 40
LBB 3539/00 Blanking panel 40
Microphones and accessories
Comments/description Page:
LBB 9600/20 Hand-held microphone 41
LBB 1949/00 Gooseneck microphone 41
LBC 1215/01 Universal microphone clamp 42
LBC 1221/01 Floor stand 42
LBC 1226/01 Adjustable boom 42
LBB 4003/00 Profecta acoustic feedback suppressor 42
Suitcases
Comments/description Page:
Audipack type 6399 Suitcase for Interpreter Units 29
Audipack type 6400 Suitcase for Interpreter Units and CCU 30
Audipack type 12759 Suitcase for DCN Concentus Units and microphones 30
LBB 3312/00 Suitcase for DCN Discussion Units 29
LBB 3504/00 Suitcase for Central Control Units 30
18 | DCN Contribution Equipment |DCN Data Brochure

DCN Data Brochure | DCN Contribution Equipment |19
2.2 Table-Top Concentus Units
LBB 3544/00
Standard Delegate Unit
• Compact, attractive delegate unit
• Built-in fold-away flat-panel loudspeaker
• Five voting buttons
• Cable connections located underneath the unit
The LBB 3544/00 is the standard delegate conference
unit, enabling delegates to speak, register a request-to-
speak, register a response request, listen to the speaker
and vote. The flat-panel loudspeaker offers superior
acoustics with minimal feedback, so increasing intelligi-
bility. It is automatically muted when the microphone is
activated. When the unit is not being used, the loud-
speaker panel conveniently folds down. There are five
voting buttons for parliamentary-, multiple choice-
or audience response voting.
Microphones LBB 3549/00 and LBB 3549/50
This innovative, stylish and ergonomically-designed
unit is equipped with a socket for a microphone
(ordered separately) with an adjustable stem which
simply plugs directly into the delegate unit for added
convenience. The microphone has a unidirectional
response for optimum performance even in noisy
conditions, and includes a red indicator ring which
illuminates when the microphone is on. Two micro-
phones are available, with standard and extended stem
lengths respectively.
Note: The microphones are separate type numbers, and
must be ordered separately.
Controls and indicators
• Socket for pluggable condenser microphone (ordered sepa-
rately) with built-in plop- and windshield, complete with light
ring which illuminates when the microphone is on
• Built-in fold-away flat-panel loudspeaker, automatically muted
if a microphone is on
• Microphone ‘on/off’ or ‘request-to-speak’ button
• Two ‘Microphone on’ indicators. One is located above the
microphone on/off button (dual colour LED for ‘request-to-
speak’ and and ‘microphone on’ indication). The other is
located on top of the loudspeaker.
• ‘Request-to-speak’ confirmation indicator (green LED)
• Five voting buttons with yellow LED confirmation indicators
These can be used to register:
- PRESENT, NO (-), ABSTAIN (0), YES (+) (parliamentary
voting)
- Numerals: 1 to 5 (multiple choice or opinion polls)
- Rating scale: - -, -, 0, +, ++ (audience response)
• ‘De-init’ switch on the underside of the unit