Sennheiser SDC 3000 CU Technical Data Manual

Features—Benefits

• Each Central Unit controls and programs conference systems with up to 150 delegate
consoles (three conference outputs each connect up to 50 consoles)

• Expandable for conferences up to 600 (Central Units may be daisy-chained)

• Integrated power supply for up to 25 conference consoles

• Operating software with voting is included

• Menu-assisted programming

• Easy connection of additional audio sources and conference media

• Three conference modes: Audomatic, Request, and Overrun

• XLR Audio Out (line) for conference channel

• XLR Audio In switchable between line and mic

• 11 Analog line inputs for interpreter channels

• 2 analog line outputs for conference channel plus 11 interpreter channels

• RS232 connector for PC control

Technical Data

CENTRAL UNIT

Mains voltage: 100 to 240 V (50–60 Hz)
Max. power consumption: 200 VA
Output voltage (Conference BUS): 33 V
Output current (max.): 3.2 A
Protection class: 1
Fuse: 2.5 AT
Temperature range: +5 to +50 °C
Max. humidity: 95 %
AF frequency response: 150 Hz to 14 kHz
Fan noise: 36 dB (A)
PC interface: RS 232 9-pin sub-D
Dimensions: approx. 1.65" x 3.78" x 14.76"

Weight: approx. 10.14 lbs.

XLR AUDIO IN:

Max. input level: adjustable from–17dBu to +18dBu
Switchable preamplification: 20 dB in switch position High

XLR AUDIO OUT:

Max. output level (balanced): +10dBu
Signal-to-noise ratio: +88dBArms

THD: < 0.1% at 3dB below max. input level

INTERPRETER IN:

Max. input level: +10 dBu

INTERPRETER OUT / CONFERENCE OUT:

Max. output level: +10dBu
Signal-to-noise ratio: +90dBArms

SDC 3000 CU

SDC 3000 CU—Central Unit with Integrated Power Supply

The Central Unit controls all functions of Sennheiser’s SDC Digital Conference System for up to 150
conference terminals and up to three SDC3000 CUs can be daisy chained for conferences up to 600.
It is used to program the chairman’s and vice chairman’s units, and to select one of the system’s
three operating modes. These include Request Mode (particpants have to request permission to
speak), the Automatic Mode (the microphone is activated by pressing the MIC key) and the Overrun
Mode (latest participant takes priority over the first participant). Additional audio sources (such as
an interpretation system or an RF Wireless system) can easily be fed into the conference system
via the Central Unit. Fitted with an integrated power supply, the Central Unit can power up to 25
Delegate Units. For larger systems, external power supplies are available separately.

continued

1) POWER switch with switch positions ON and OFF

2) LC display

3) button (UP)

4) button (DOWN)

5) SET button

6) ESC button

7) 8-pole socket for connecting additional central units
(CU-BUS IN)

8) 6-pole socket for connecting cable strings with delegate
units (CONFERENCE BUS OUT I-II-III).

10) XLR 3F socket for balanced input signal (AUDIO IN)

11) Input level adjustment for AUDIO IN socket (High/Low)

12) XLR 3M audio output for balanced output signal of the

floor channel (AUDIO OUT)

13) 25-pole sub-D socket for output signal (CONFERENCE

OUT)

14) 9-pole sub-D socket, RS 232 interface of reconnecting

a computer

15) 25-pole sub-D socket for output signal (INTERPRETER

OUT-11 channels)

16) 25-pin sub-D connector for input signal (INTERPRETER

IN-11 channels)

17) Socket for mains cable

18) Fuse holdr

Delivery Includes

1 SDC 3000 CU

Operating software

SDC 3000 CU

Optional Accessories

SDC PS 25 Power Supply Unit for 25 additional terminals

TIS1000 Televic Interpretation System, 4-channels
TIS1500 Televic Interpretation System, 8-channels

SDC Software For conference management via PC

Integrated System Diagram

SDC 3000 CU Daisy Chain

1) POWER switch

2) LED for power supply indication

3) 8-pole socket for connection to delegate units or a
central unit (IN)

4) 6-pole socket for connecting additional delegate units
(OUT)

5) Socket for mains cable

6) Fuse holder

SDC PS 25 Power Supply

SDC Software

Sennheiser Electronic Corporation, 1 Enterprise Drive, Old Lyme, CT 06371

Telephone: [phone] • Fax: [phone] • Web: http://www.sennheiserusa.com

Sennheiser Mexico:

Av. Xola 613, PH6, Col. Del Valle 03100, Mexico, DF. Telephone: [phone]. Fax: [phone]
Sennheiser Canada: 221 Labrosse Ave, Pte-Claire, PQ H9R 1A3. Telephone: [phone]. Fax: [phone]
Manufacturing Plant: Am Labor 1, 30900 Wedemark, Germany