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CU 5905 Central Unit
• Control of 250 discussion units
• Support for 2 interpretation channels
• Scrambled audio
• Web browser interface for mic control & configuration
• TCP/IP control interface
• Emergency connection (EEM)
• 4 configurable analog audio out
DIS Digital Discussion Systems
CU 5905 Central Unit
Description
The CU 5905 is the controller in the DDS 5900 Digital Discussion System.
It controls and supplies power to the chairman/delegate discussion units and inter-
preter units and operates up to 250 discussion units and 32 interpreter units in a
single bus cable structure known as the DCS-LAN; a proprietary high-speed digital
audio, data and power bus. All units are connected to the DCS-LAN in daisy chains
using standard CAT 5e (or higher) F/UTP or U/FTP cables.
The CU 5905 features fully digital audio transmission of the floor channel, two
interpretation channels and up to eight discussion microphones at the same time.
The units can be combined into four groups using a built-in group matrix.
The CU 5905 features one analog audio input and four analog audio outputs, the
four analog audio outputs are used for distribution of audio from the four groups,
the floor channel or one of the two interpreter channels. This is used either for
connection to external PA systems, for recording purposes or for connection to a
language distribution system, like the DIS digital wireless infrared system.
The sound for the built-in loudspeakers in the discussion units is taken from Group
A and/or from the Analog Audio In 1 XLR sockets.
Connection for Emergency Input (EEM) is available as well, using Analog Audio In
2 and the contact closure switch. When activated the signal on Analog Audio In 2
is available in the loudspeakers and in the headphones.
The OLED display on the front enables the user to setup basic system configurations in terms of the maximum number of speakers/requests, microphone operation mode etc.
All system settings are available in a web browser interface. The CU 5905 provides
TCP/IP communication for external control over Ethernet.
The DCS-LAN chain can be branched using repeater RP 6004 or extension unit
EX 6010. Additional units can be powered using power supplies PS 6000 or extension unit EX 6010
Inserting JB 6104 junction boxes in the DCS-LAN chain enables hot plugging of
single units. Each JB 6104 junction box features the connection of a single unit to
each of the four outputs on the junction box.
Features
The CU 5905 has the following features:
• Fully digital audio transmission
• Support for four microphone operation modes; Automatic,
FIFO Manual and VOX (Voice activated On/Off of the
microphone)
• Support for delegate interrupt mode
• Auto Off of the microphones
• Scrambled audio to prevent eavesdropping
• Powers up to 60 units without the use of an additional power
supply
• Control of up to 250 discussion units
• Connection of up to 32 interpreter units
• Up to eight simultaneous open microphones
• Floor + two interpretation channels
• Four analog audio outputs, configurable as a 'group out' or
'interpretation channels out'
• DCS-LAN daisy chain topology with loop-through connections
or hot plug connection, when using JB 6104 junction boxes
• DCS-LAN connection using shielded CAT 5e (or higher) F/
UTP or U/FTP cabling
• TCP/IP Ethernet connection for external control
• Web browser interface for easy setup of the system
• Web browser interface for microphone control, request list
control and basic operational parameters
• Built-in seat table for attaching seat numbers to units
• Assigning names to the seats using the web browser
Data sheet DS-CU5905-f
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Specifications
Electrical
Power consumption max. 150W/48V
Supply voltage for DC 5980
Sound quality
Frequency response 65 Hz-16 kHz
Signal-to-noise ratio > 85 dBA
Audio inputs
Analog audio input
Analog audio in 2
(Emergency input - EEM
Audio outputs
125W/48V
units
24 bit audio, 32 kHz sampling
frequency
THD < 0.1 %
One 3-pin female XLR socket
(electronically balanced)
One 3-pin female XLR socket
(electronically balanced)
Mechanical
Mounting
Dimensions without feet (H
x W x D)
Weight 2800 g
Storage temperature
Optimal operating
temperature
Tabletop or mounted in a 19",
one-unit rack
Color Black
44.4 x 426 x 186 mm
-20° to 60° C, 10-80%
humidity
5° to 40° C, 35-80% humidity
PS CU External Power Supply
Main voltage 100-240 V, 50-60 Hz
Max. consumption 175 W
Total supply power 150 W
Standby consumption <0.5 W
Supply voltage for CU 6110 48V/3A
Analog audio out
Maximum load > 1 k ohm
Four 3-pin male XLR sockets
(electronically balanced)
Interconnections
DCS-LAN Two RJ45 female sockets
EEM One contact closure input
System Performance
Max. number of discussion
Max. number of IS units 32
Max. number of languages 2
Max. number of open
"floor"microphones
units
250
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Certifications
The DDS 5900 system in general conforms to the IEC 60914 standard,
however some functionalities, when the unit is configured as interpreter
unit, does not fulfill all requirements in the standard.
PS CU approvals CE, KC, CCC, cULus, TÜV
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How To Order
CU 5905 Central Unit 15 09 58001
Included accessories
• PS CU External Power Supply
• Power cable, 1 piece
• 19" brackets, 1 set
• Tool for fixing GM to XLR
• Chairman overlay, 2 pieces
• Interpreter overlay, 3 pieces
• Delegate overlay, 1 piece, "Speak" button (no "Mute" button)
CU Front / Back
Data subject to change without notice.
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