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Bosch Security Systems | 04-2003 | 3922 988 43318 en
Digital Congress Network | Installation and Operating Manual | Chapter 7 - DCN Installation Accessories
en | 7-2
Introduction Installation accessories
7.1.1 LBB 4114/00 Trunk-cable splitter
For use in combination with the systems installation cabling, the splitter is used to divide the trunk-line
cabling into diverse directions, to achieve where necessary, a neat and tidy layout of the system
cabling and its connected equipment. The splitter comes complete with cable restraining clamps and
include mounting holes for fixation to a floor or for mounting against a wall.
Key to symbols (see FIG 7-2):
1. 2 m (6.5 ft.) long cable terminated with a moulded 6-pole circular connector.
2. 6-pole circular connector for trunk-cable splitting and pulse regeneration purposes (tap-off).
3. 6-pole circular connector for Loop-through connection (Trunk).
4. 6-pole circular connector for trunk-cable splitting and pulse regeneration purposes (tap-off).
5. Screw holes for securing the unit.
FIG 7-2 Layout Trunk-cable splitter (top and side view)
7.1.2 LBB 4115/00 Tap-off Unit
The LBB 4115/00 is used to create short-circuit proof tap-off points on the trunk-line cabling. Each
tap-off point allows for connection of up to five channel selector panels or one contribution unit such
as delegate, chairman or interpreter unit. The tap-off unit comes complete with cable restraining
clamps and includes mounting holes for fixing purposes.
Interconnection (see FIG 7-3):
1. 2 m (6.5 ft.) long cable terminated with a moulded 6-pole circular connector.
2. 6 pole circular connector for tap-off purposes. The tap-off is equipped with an electronic short
circuit protection facility on the power supply lines with a max load of 2.5 PCF.
3. 6-pole circular connector for loop-through connections (Trunk).
4. 6 pole circular connector for tap-off purposes. The tap-off is equipped with an electronic short
circuit protection facility on the power supply lines with a max load of 2.5 PCF.
5. Screw holes for securing the unit.
FIG 7-3 LBB 4115/00 Tap-off unit
BOSCH
BOSCH
1
4
5
3
2
5
4 3 1 2
2.5 PCF (max.) 2.5 PCF (max.)
LBB 4115/00
Trunk-line
Trunk-line
To CCU
Tap-offs
1
2 4
3
LBB 4115/00
Trunk-line
Trunk-line
connector
5