The DIS-CCU Central Control Unit is the centerpiece of the DDS 5900 Digital Discussion System and the DCS 6000 Digital Conference System. It distributes digital audio, control data, and
power to chairman, delegate, and interpreter units over a standard shielded CAT 5e (or higher) cable in serial ‘daisy-chain’ topology using the proprietary DCS-LAN protocol.
The DIS-CCU includes 2 analog audio inputs for external audio sources, and 8 analog audio outputs for connection to a videoconferencing system, audio/video recorder, sound reinforcement system, or wireless language distribution system.
The DIS-CCU distributes the ‘floor’ audio mix plus interpretation channels to each discussion or conference unit. Up to 8 microphones may be active simultaneously. Four different microphone operating modes are supported: Automatic, First-In/First-On (FIFO), VOX (voice activated), and Manual.
A web browser interface allows microphone control and system configuration using a computer or tablet. Separate web addresses are provided for Administrator, Chairman, and Display functions.A TCP/IP connection is provided for connection to a third-party media control system.
Data
System Performance
The following table provides maximum number unit and channel counts per DDS 5900 system.
Max. number of discussion units 250
Number of discussion units powered by CU 5905 up to 60
Max. number of open "floor" microphones 8
Max. number of languages (interpreter channels) 2
Max. number of interpreter units 32
Network
DCS-LAN outputs Four (4) RJ45 female sockets
TCP/IP One (1) RJ45 female sockets
Audio
Audio inputs
Analog Input 1 One 3-pin female XLR socket
(electronically balanced)
Nominal input level (Input 1) switchable:
•0 dBm (0.775V RMS)
•-10 dBm (0.245V RMS)
Max. input level +15 dBm (4.5V RMS)
Input Impedance 50-100 kΩ
Analog Input 2 (Audio In or Emergency input - EEM) One 3-pin female XLR socket
(electronically balanced) with
contact closure
Audio outputs
Analog audio out Eight (8) 3-pin male XLR sockets
(electronically balanced)
Maximum load > 1 k ohm
Nominal output level 0 dBm at nominal input
Max. output level 4.9V RMS ~ +16 dBm
Electrical
Power consumption 22W/48V (150W max.)
Supply voltage for microphone units 122W/48V
Sound quality 24 bit audio, 32 kHz
sampling frequency
Frequency response 65 Hz-16 kHz
THD < 0.1 %
Signal-to-noise ratio > 85 dBA
Mechanical
Mounting • tabletop
• standard 19" rack
Dimensions (H x W x D) 44.4 x 426 x 186 mm
(1.75 x 16.8 x 7.2 in.)
Color Black
Weight 2.8 kg (6.17 lbs.)
Temperature range Storage: -20° to 60° C,
10-80% humidity
Operation:5° to 40° C,
35-80% humidity
PS CCU External Power Supply (SNP-A15T):
Main voltage 100-240 V, 50-60 Hz nominal
Max. consumption 175 W
Total supply power 144 W (power factor: >0.9)
Standby consumption <0.5 W (no load)
Supply voltage 48V/3A @ 40°C[1]
Efficiency 87%, typical
Inrush Current •230 V: <80 A
•115 V: <40 A