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Bosch Security Systems | 04-2003 | 3922 988 43318 en
Digital Congress Network | Installation and Operating Manual | Chapter 11 - System Set-up and Operation
en | 11-2
Setting up a stand-alone system
11.2 Setting up a stand-alone system
The Central Control unit, in stand alone systems enables four basic conference procedures to be
conducted:
• Microphone management using various microphone operating procedures,
• Voting procedures using the basic parliamentary voting procedure,
• Interpretation facilities,
• Intercom to the Intercom Operator.
The programming of the interpretation system (i.e. interpreter desk) in a stand-alone system is done
manually (see Chapter 11.11 “Programming the interpreter desk”).
11.2.1 System mode selection (Multi-CCU LBB 3500/35 only)
Refer to FIG 11-2 (4). Single or Multi-CCU mode can be centrally selected using Multi-CCU software
package LBB 3586. Using the ‘System’ mode push-button, the Multi-CCU LBB 3500/35 can be
selected for use in Single mode if the LED indication for Multi-CCU mode is seen to flash.
11.2.2 Microphone control modes (FIG 11-2 (2))
The CCU in stand-alone mode, offers three microphone operational modes:
•‘Open’,
•‘Override’,
•‘Voice activation’.
In each mode of operation, the maximum number of active microphones (Active Micro’s) that can be
switched on at the same time during a discussion, can be assigned.
To select the number of active microphones, press the ‘Active Micro’s’ button, its LED
corresponding to the chosen number (1, 2 or 4*) will illuminate.
* The number of active microphones available for selection in Voice activation mode is (2 or 4).
1. ‘Open’ mode
When the ‘Open’ mode is selected, delegates activate their microphones by pressing the microphone
button on their delegate units. The number of delegates permitted to speak at the same time is
limited to the number of active microphones selected. This means for example, - that if 4 Active
Micro’s have been selected and four delegates are currently speaking, no other delegates may join in
the debate. If a fifth delegate wants to join in the debate, this delegates joins a ‘Request-to-speak’ list
However, if one of the current speakers switches his microphone off, the next delegate to switch on
his microphone can join in the debate.
The maximum number of delegates in the Request-to-Speak list is 20.
2. .‘Override’ mode
When the ‘Override mode is selected, delegates activate their microphones by pressing the
microphone button on their delegate units. If the number of active microphones is four and the
number of current speakers is three then the delegate can join in the debate without interrupting the
group of speakers. However if the number of current speakers is four and a new delegate now
presses his microphone button to join in the debate, the microphone unit of the first speaker in the
group will be switched off (FIFO First-In-First-Out), allowing the new delegate to join in the
discussion. Using the override mode, no ‘Request-to-speak’ list is available.
NOTE: In ‘Open’ and ‘Override’ mode the chairman can, at anytime, switch on his micro-
phone.
3. ‘Voice Activation’ mode (Single CCU systems only)
When the ‘Voice Activation’ mode is selected, the delegates’ microphones are activated when spoken
into. However, its light ring indicator is not functional in this mode (*default). The number of
delegates permitted to speak at the same time in this mode, is limited to the number of active
microphones selected (2 - 4 only). * The default setting can be changed, see Chapter 2.3.1 and
Chapter 2.5.1.
FIG 11-2 CCU (version illustrated LBB 3500/35)
Equalizer
On
Busy
Start
SystemLoudspeakersPower OperationActive Micro's Equalizer
Active Micro's
1
2
4
Open
Override
Voice
Operation
System
Single
Multi
Error
LED
LED
LED
Push-button
Push-button
LED
LED
LED
LED
LED
LED
LED
LED
Push-button
Push-
Applicable to:
LBB 3500/35
only
button
