Bosch Appliances 3922 988 43318 manual Control Capacity, Stand-alone Systems

Digital Congress Network Installation and Operating Manual Chapter 10 - Installation Techniques en 10-10

10.5 Control Capacity

The Central Control Unit LBB 3500/05 has a power handling capacity to power up to 90 DCN units, while Central Control Units LBB 3500/15 and LBB 3500/35 have a power handling capacity to power up to 180 DCN units. However, the built-in ‘control facilities’ of all CCUs are capable of controlling up to a maximum of 240 active units* and an unlimited number of passive units**. A combination of both active and passive units can be connected to any system ‘tap-off ’ or trunk-line outlet connector.

10.6 Stand-alone Systems

(using Extension cables, Trunk-splitter and Tap-off units)

All DCN system units are connected to the CCU via its three outlet trunk-line cable connectors.

Where more than 240 active units are required, the DCN system can be extended with the Multi- Central Control unit LBB 3500/35 for use in Multi-CCU systems. In combination with a dedicated PC, fitted with a Multi-PC- card LBB 3511/00 and Multi-CCU software LBB 3586/00, the PC can control up to a maximum of 16 CCU’s connected in a 75 ohm coaxial loop-through chain. Each CCU in the chain has the same Power handling and control capacity as the Extended CCU (LBB 3500/15).

In total, a maximum of 3,840 active units, using sixteen LBB 3500/35 type CCU’s can be controlled.

* Active (contribution) units include:

•LBB 3530/xx, LBB 3531/xx, ...............................................................Delegate discussion units

• LBB 3533/xx, LBB 3534/xx		Chairman discussion units
• LBB 3544/00, LBB 3545/00, LBB 3546/00, LBB 3547/00 ..		Conference units (Concentus)
•	LBB 3520/10	Interpreter desk
•	LBB 3535/00	Dual Audio Interface Unit (See Note 1)
•	LBB 3540/00	Multi-purpose Connection Unit
•	LBB 3512/00	Data Distribution Board
•	LBB 3510/00	PC Network Card
•	LBB 3513/00	Analog Audio Input/Output Module

**Passive (distribution) units include:

• LBB 3524/xx/, LBB 3526/10 Channel Selector Panel (See Note 2)

NOTE 1: The Dual Audio Interface Unit is controlled by the system as a single active unit, however two microphone inputs can be individually switched on or off. Therefore, when using the Dual Audio Interface Unit LBB 3535/00, up to a maximum of 480 microphones can be connected to a single Central Control Unit.

NOTE 2: Up to 10,000 Channel Selector Panels LBB 3524/xx and LBB 3526/xx can be connected to a single Central Control Unit in combination with Extension power supply units and/or Audio Media Interface Units to provide the required power.

10.6.1 Basic System (without extension units)

FIG 10-13shows a basic trunk-line interconnection, without extension units.

LBB 3500/05				Central Control Unit
Port 1		Rec.	Line	Trunk
	In		In
	Out		Out	115 V -T4A 230 V -T2A
			Symmetrical
	≤ 90 PCF (max.)
LBB 3500/15				Central Control Unit
Port 1		Rec.	Line	Trunk
	In		In
Port 2	Out		Out	115 V -T4A 230 V -T2A
			Symmetrical
≤	180 PCF (max.)

FIG 10-13 System Interconnection without extension unit

Bosch Security Systems 04-2003 3922 988 43318 en Control Capacity