1. Power handling and control capacity
Power handling Power consumption factor (PCF)
Central Control Unit LBB 3500/ PCF
Extended Central Control Unit LBB 3500/ PCF
Multi Central Control Unit LBB 3500/ PCF
Audio media interface unit LBB 3508/ PCF
Extension power supply LBB 4106/x0 180 PCF
Control capacity for a single CCU = 240
Delegate, Chairman's, Dual Audio Interface -units, Interpreters Desks, Infra-red Interface, Audio I/O modules and active Data Distribution Boards are counted for 1
Note:
2 microphones can be connected to 1 Dual Audio Interface unit Channel selectors are passive units and are not controlled.
DCN SA SD Design Calc

2. Power Consumption Factor (PCF)
Type No DCN Unit Description PCF Value
LBB 3530/xx Delegate unit(discussion) 1
LBB 3531/xx Delegate unit(discussion) 1
LBB 3533/xx Chairman unit(discussion) 1
LBB 3534/xx Chairman unit(discussion) 1
LBB 3544/00 Delegate unit(Concentus) 2
LBB 3545/00 Delegate unit(Concentus) 2
LBB 3546/00 Delegate unit(Concentus) 2.5
LBB 3547/00 Chairman unit(Concentus) 2.5
LBB 3520/10 Interpreter desk
LBB 3524/xx Channel selector unit
LBB 3526/10 Channel selector unit
LBB 3512/00 Data Distribution Board 1
DCN SA SD Design Calc

3. Power Consumption Factor (PCF)
Type No. DCN Unit Description PCF Value
LBB 3535/00 Dual Audio Interface unit *
LBB 3540/15 Multi-purpose connection unit * 2
LBB 4106/x0 (D) Extension Power Supply Unit 0.5
LBB 3508/00 (D) Audio Media Interface unit 0.5
LBB 3423/00 DCN Interface module
LBB 3510/00 PC network card
LBB 3513/00 Analog Audio I/O Module 1
LBB 4114/00 Trunk- cable Splitter
LBB 4115/00 Tap -Off unit
The PCF value of a unit includes its attached 2 m (6.5 ft.) long cable.
* The PCF value of these units include the flush-mounted units and or hand microphones connected to it.
DCN SA SD Design Calc

4. Central Control Unit Power handling capacity of the LBB3500/05
Max. PCF 60
Max. PCF 90
DCN SA SD Design Calc

5. Maximum number of units within 100M
Max. per trunk:
50 Discussion
Concentus
40 DAI MPCU
24 IN-Desk
LBB 3500/05
Max. all trunks:
90 Discussion
Concentus
60 DAI MPCU
36 IN-Desk
Cable length per outlet to the last unit  100M
DCN SA SD Design Calc

6. Audio Media Interface & Power Supply
Power handling capacity of the LBB3508/00
Max. PCF 60
Max. PCF 90
DCN SA SD Design Calc

7. Maximum number of units within 100M
Max. per trunk:
50 Discussion
Concentus
40 DAI MPCU
24 IN-Desk
LBB 3508/00 AMI
Max. all trunks:
90 Discussion
Concentus
60 DAI MPCU
36 IN-Desk
Cable length per outlet to the last unit  100M
DCN SA SD Design Calc

8. Extended & Multi- Central Control Unit
Power handling capacity of the LBB3500/15 /35
Max. PCF 60
Max. PCF
180
DCN SA SD Design Calc

9. Maximum number of units within 100M
Max. per trunk:
50 Discussion
Concentus
40 DAI MPCU
24 IN-Desk
LBB 3500/15 /35
Max. all trunks:
150 Discussion
Concentus
120 DAI MPCU
72 IN-Desk
Cable length per outlet to the last unit  100M
DCN SA SD Design Calc

10. Extension Power Supply Unit
180
Max. PCF 60
Power handling capacity of the LBB 4106/x0
DCN SA SD Design Calc

11. Maximum number of units within 100M
Max. per trunk:
50 Discussion
Concentus
40 DAI MPCU
24 IN-Desk
LBB 4106/x0 EPS
Max. all trunks:
150 Discussion
Concentus
120 DAI MPCU
72 IN-Desk
Cable length per outlet to the last unit  100M
DCN SA SD Design Calc

12. Trunk Outlet & Tap-Off Outlets
LBB 4106/X0 Extension Power Supply Unit
LBB 4114/00 Trunk-cable splitter
LBB 4115/00 Tap-off unit
Trunk-out
DCN SA SD Design Calc

13. Using the Tap-Off unit LBB 4115/00
DCN SA SD Design Calc

14. Tap-Off Limitations I&U Instructions LBB3500/xx LBB4106/x0 1st Tap-off
2nd Tap-off
LBB4114/00
Tap-off
Trunk-line
Loop Through
3rd Tap-off
2nd Tap-off
4th Tap-off
3rd Tap-off
5th Tap-off
4th Tap-off
I&U Instructions
DCN SA SD Design Calc

15. Maximum Cable Lengths 250M
Units with
Regenerative
Tap-Off’s
LBB 4114/00
LBB 4106/00
LBB 3508/00
Units with
Regenerative
Tap-Off’s
LBB 4114/00
LBB 4106/00
LBB 3508/00
DCN SA SD Design Calc

16. Longest Extension Cable
DCN SA SD Design Calc

17. Example calculation the PCF of a system
DCN SA SD Design Calc

18. Example calculation the PCF of a system
Trunk- Longest PCF Value PCF Value
Outlet Extension (without Ext. cable (with Ext. cable cable-length correction) correction)
m (131 ft)
m (65.6 ft)
m (262 ft)
System PCF = 84
DCN SA SD Design Calc

19. Graph for calculating the PCF value
DCN SA SD Design Calc

20. Maximum number of units after 240M
Trunk splitter
LBB 4114/00
DCN SA SD Design Calc

21. DCN System Design and calculation
End of section
 Robert Bosch GmbH
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DCN SA SD Design Calc