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Bosch Security Systems | 04-2003 | 3922 988 43318 en
Digital Congress Network | Installation and Operating Manual | Chapter 2 - Contribution Equipment
en | 2-5
LBB 3533/xx and LBB 3534/xx Chairman Discussion Unit
2.3.2 Interconnection details discussion units
All discussion units include connectors for loop-through connection of one unit to the other (i.e. ‘daisy
chain’). FIG. 2-6 shows the connectors and the interconnection method used.
Key to symbols (FIG. 2-6 )
1. 2 m long cable terminated with a 6-pole circular connector.
2. 6-pole socket for loop-through from other system units.
3. Recessed microswitch for resetting the unit’s address (De-Init).
2.3.3 Mounting discussion units (FIG. 2-6)
In portable systems, discussion units can be free-standing on a level surface - such as a table-top. In
permanent installations, the units can be nut/bolt mounted using the 2 x M3 threaded holes under the
unit. In such an installation, the units cable securing clamp can be removed from its cable entry and
modified, allowing its 2 m cable to be neatly run through a hole directly under the table-top surface
(see opposite). For cable clamp modification, remove the cable clamp at the rear of the unit by
unscrewing the clamps two securing screws (A) . Once removed, use a sharp cutting tool to remove
the small insert
(B) from its housing. Run the units cable through the cable run and secure it into the
free cable entry using the removed insert
(B) as shown in (D).
FIG. 2-6 Interconnections discussion unit (rear view)
1 2 3
Rear view Discussion unit
To Central Control Unit (CCU)
Trunk Cable Splitter
LBB 4114/00
Discussion unit
(rear view)
LBB 3530/xx
LBB 3531/xx
LBB 3533/xx
LBB 3534/xx
D
B
A A
C