Technical data

4.1 LBB 4100/00 Central Control Unit
The Central Control Unit (CCU) is the heart of the inter-
pretation system with as many as 2 x 32 high quality
audio channels; allowing for interpretation application
with floor and 31-interpretation languages.
Features and benefits
• Award winning design
• Control for up to 186 interpreter desks
• Control facilities for an unlimited number of 32-channel
selectors LBB 4124
• Optical network for coupling of the CCU to Audio Expanders
LBB 4402 to allow a variety of audio contribution and distri-
bution facilities
• The optical network is designed for redundant cabling. The
optical network can be either single branch or redundant
loop
• 2 audio line inputs and 2 audio line outputs
• Adjustable sensitivity for the audio inputs
• Adjustable level for the audio outputs
• Configuration of CCU and system via a display and one sin-
gle rotary push button
• Each CCU can be assigned a unique name by the installer
for easy identification
• VU meter readings to monitor audio inputs and audio out-
puts. The audio can be monitored using a headphone
• 19” (2U) housing for table top or rack mounting
• Handgrips for easy transportation
• 19” rack mounting brackets, detachable feets and mounting
accessories included
Controls and indicators
• Mains on/off switch at the front
• 2 x 16 Character LCD display at the front for status informa-
tion and CCU configuration
• Rotary control at the front to navigate through the LCD
menus
• Two red LED overload indicators for the DCN network out-
puts at the rear
• Two red LED overload indicators for the optical connections
at the rear
Interconnection
• Euro mains socket with built-in fuse, matching mains cable
(1.7 m [5.58 ft]) included
• Two DCN outlet sockets for connection of units, plus exten-
sion power supplies. Each socket is protected against short-
circuit (2 x 6-pole circular sockets)
• Two optical network connections for connection of Audio
Expanders
• Two 3-pole XLR balanced audio line inputs with optional
galvanic separation.
• Two stereo Cinch unbalanced audio line inputs
• Two 3-pole XLR balanced audio line output with optional
galvanic separation.
• Two stereo Cinch unbalanced audio line outputs
• 1 x headphone output 3.5 mm (0.14 in) stereo
• Two RS-232 serial data connectors for PC connection and
diagnostic equipment
Electrical characteristics
Supply voltage 115/230 V ± 10 %
Power consumption 200 W
DCN system supply 40 VDC, max 65 W per DCN socket
Optical network supply 40 VDC, max 65 W
Total supply power 130 W
RS-232 connection 2 x 9-pole Sub-D female socket
Performance
Frequency response 30Hz – 20 kHz (-3dB at nominal level)
THD at nominal level < 0.5 %
Cross talk attenuation > 85 dB at 1 kHz
Dynamic range > 90 dB
Signal–to-noise ratio > 87 dBA
14 | Central Control Equipment | DCN Next Generation Interpretation System Data Brochure
4. Central Control Equipment