Central Unit
The Central Unit is the heart of the conference system and is available in a slim, rack mounted 19" case. It has the following features:
- Powerful speaker queue
- Queue can handle up to 256 speakers
- Automatic queue handling. As soon as an audio channel is available, the next speaker will be allowed to talk on a first-in first-out basis
- Intelligent. Exiting the queue by mistake and then re-entering will cause the speaker to re-assume his old queue position
- Audio control functions
- Audio receiver mixer. Mixes the three audio channels, including mute function.
- 'Line In&Out' and 'Tele In&Out' level control
- Delegate microphone signal equalizer (low and high frequency band)
- Feedback prevention function. Depending on room characteristics, a preset amount of signal level reduction can be selected to avoid feedback problems when multiple delegate units are active
- Multiple audio inputs and outputs
- 'Line In' and 'Line Out' can be used to connect an external sound source such as a tape recorder
- 'Tele In' and 'Tele Out' can be used together with a Telephone Hybrid for telephone conferences
- Tele and Line connectors use balanced XLR and unbalanced 1/4" connectors
- Insert function into the delegate microphone signal using a Stereo 1/4" connector
- Control the delegate unit sound levels
- The volume knob range on the delegate unit can be controlled by the central unit to prevent problems with feedback
- Both speaker and headphone levels are controllable individually
- Chairman function
- Independent of speaker channel usage, a chairman always has access to
a channel using one of three methods
- 'Steal Channel' - The chairman steals the channel from the speaker that has spoken the longest time. When the chairman releases the channel, it becomes available to the next speaker in the queue
- 'Borrow Channel' - The chairman borrows the channel from the speaker that has spoken the longest time. When the chairman releases the channel, the channel is automatically returned to the original speaker
- 'Own Channel' - The chairman has his own channel, leaving a maximum of two channels available to other speakers
- The right key of the Chairman Unit can be used as override key
- Independent of speaker channel usage, a chairman always has access to
a channel using one of three methods
- Priority Unit handling
- One delegate unit can be treated as a priority unit. This is especially useful with a platform where a speaker channel is always open
- The priority unit uses the 'Steal Channel' method as described under 'Chairman function'
- Directly supports up to 8 transceiver units
- Up to 8 transceiver units may be connected directly to the central unit. By using a Split Box, even more transceiver units can be used to handle the most difficult rooms
- Six infrared communication channels
- Three audio channel receivers. Can be configured to allow one, two or three speakers to talk simultaneously
- One data channel receiver. Receives data messages from the delegate units
- One audio transmitter. Acts as an audio broadcast channel for all delegate units
- One data channel transmitter. Sends delegate unit control messages such as speaker volume levels
- Universal (World) Power Supply
- Lockable menu to prevent unauthorized use
- Unit firmware can be updated via the serial port
Front panel
The front panel contains:
- A 16 characters x 2 lines backlit LCD display.
- Three status indicators, POWER on, EDIT mode and system ERROR
- Two buttons and a rotary knob used for changing unit settings
- System power switch
Rear panel
The rear panel contains:
- A serial port. Used for remote control and firmware updating
- A power connector. Provides power to the system
- System fuse
- Line In, Line Out, Tele In and Tele Out. Audio connectors for external sound sources
- Line and Tele connectors both in balanced XLR and unbalanced 1/4"
- Delegate microphone signal Insert using stereo 1/4" connector, e.g. a feedback destroyer
- RJ-45 transceiver connectors
- AUX connector for special control purposes, e.g. a telephone hybrid
System uses quick-connect, industry standard, S-STP grade, CAT 6 Ethernet
cables. For more detailed information about cables, please see the FAQ section in the online forum.
Order Code: CU-110-11. Download
full product catalogue for more detailed information.