Bosch CCS-CU Control Unit

The Bosch CCS-CU Charcoal Control Unit is the heart of the CCS Ultro Discussion System and supplies the power for all delegate and chairman units in the system. The unit also controls the chairman and delegate unit microphones, as well as providing connections for audio inputs and outputs.

Functions

Discussion control without operator
The CU can be setup to operate standalone without the need for an operator. The following 5 modes can be chosen using a rotary control on the unit's top panel.
Open mode allows selection of one to four microphones (excluded chairmen microphones) which can be simultaneously active.
Open mode with auto-switch-off allows selection of one to four microphones (excluded chairmen microphones) which can be simultaneously active. If the delegate does not speak for 30 seconds, microphones are automatically switched off.
Override mode delegates can override each other simply by activating their microphones. Only one microphone can be active at any one time.
Chairman only mode allows only chairmen can speak. Delegate microphones cannot be activated, even when a chairman is not speaking.
Test mode checks if system connections are correct. All microphone light rings and contribution unit LEDs light up to indicate that units are properly connected.

Supplies power for up to 50 contribution units
The CU has two trunk outputs for the loop-through connection of contribution units. It is possible to connect 25 contribution units to each trunk output, with a maximum system cable length of 100 m (109.3 yards).

Provides control for up to 150 contribution units
Up to 3 CUs can be used together in a discussion system to power and control a maximum of 150 contribution units. In this configuration a single CU acts as a master controller for the entire system.

Built-in monitor loudspeaker
The built-in monitor loudspeaker and headphone socket allow the conference to be monitored.

Interfaces the system with external equipment
External wired or wireless microphone for guest speakers or audience participation. External PA system for transmitting the proceedings to an audience in the same room or an adjacent room. Tape recorder for external recording and playing back meetings and discussions. Audio equipment for providing background music. Telephone coupler to allow a remote delegate to participate via telephone. External audio processing an insertion connector is provided.

Controls and Indicators

Top
Mains on/off switch. Loudspeaker volume control, for setting output level of loudspeakers of contribution units. This control also determines the maximum level for the headphone outputs of the contribution units and the CU. Microphone mode rotary switch, for setting the number of simultaneously active microphones, and selecting one of the four operation modes. Power on LED Back. Microphone input gain adjustment. External recorder input gain adjustment. Insertion connector bypass switch.

Interconnections

Top
1 x 3.5 mm (0.14 inch) stereo headphone socket.

Back
1 x AC input. 2 x 7-pole circular female connectors, trunk in/out loop through interconnection. 1 x 3-pole female XLR connector, microphone input. 1 x Cinch connector pair, line input/output. 1 x Cinch connector pair, telephone input/output. 1 x Cinch connector pair, insertion input/output. 2 x Cinch connector pairs (R/L channel), external recorder input/output.