Bosch Appliances 3922 988 43318 manual Power Handling Capacity, Power Handling Capacities

Digital Congress Network Installation and Operating Manual Chapter 10 - Installation Techniques en 10-2

10.2	Power Handling Capacity
To understand the power handling capacity of a system, individual DCN units have been assigned with		LBB 3500/xx Central Control Unit				LBB 3508/00 Audio Media Interface Unit
a Power Consumption Factor (PCF). The PCF therefore has a bearing on the total number of units
that can be connected to a system.The maximum number of units, quoted for a CCU is based on all		Port 1	Rec.	Line	Trunk	Output 1 Output 2	Output 3 Output 4	Trunk	Tap-off
units having a PCF of 1.This means for example, that a CCU can accommodate 60 units of PCF (valid			In	In
			Out	Out	115 V -T4A 230 V -T2A				115 V -T4A 230 V -T2A
for each trunk/tap-off output), but can also accommodate 120 units of PCF 0.5. Table No. 10.1 gives				Symmetrical
the PCF value rated for each DCN system unit.		PCF = ≤	60 max.			PCF = ≤	60 max.
The length of (extension) cable used also has an influence on the number of units connected to a
system. Therefore to calculate the PCF value in relation to the length of cable used, a calculation		LBB 3500/05 Central Control Unit
graph has been devised (refer to Chapter 10.4 “Calculating the PCF of a system”).						Output 1 Output 2	Output 3 Output 4	Trunk	Tap-off
FIG 10-1shows the maximum PCF values that can be connected to a single and all three trunk-		Port 1	In	In					115 V -T4A 230 V -T2A
			Rec.	Line	Trunk
outlets of the following units:
			Out	Out	115 V -T4A 230 V -T2A

1. Central Control Unit LBB 3500/..					Symmetrical
						PCF = ≤ 90 max.
2. Audio Media Interface unit LBB 3508/00			PCF = ≤ 90 max.
3. Extension Power Supply Unit LBB 4106/00
Table 10.1: Power Consumption Factor PCF			LBB 3500/15 and LBB 3500/35
			Central Control Unit
Type No.	DCN Unit Description	PCF Value	Port 1	Rec.	Line	Trunk
LBB 3530/xx	Delegate unit (discussion)	1		In	In
			Port 2	Out	Out	115 V -T4A 230 V -T2A
LBB 3531/xx	Delegate unit (discussion)	1			Symmetrical
LBB 3533/xx	Chairman unit (discussion)	1	PCF = ≤	180 max.
LBB 3534/xx	Chairman unit (discussion)	1
LBB 3544/00, LBB 3545/00	Delegate unit (Concentus)	2
LBB 3546/00	Delegate unit (Concentus)	2.5			LBB 4106 Ext. Power Supply Unit		LBB 4106 Ext. Power Supply Unit
LBB 3547/00	Chairman unit (Concentus)	2.5
LBB 3520/10	Interpreter desk	2.5			Trunk	Tap-off	Trunk	Tap-off
LBB 3524/xx	Channel selector unit	0.5				11 5V-T 4A 2 30V -T2A		11 5V-T 4A 2 30V -T2A
					In		In
LBB 3526/10	Channel selector unit	0.5	PCF = ≤	60 max.
LBB 3535/00*	Dual audio interface unit	1.5				PCF = ≤	180 max.
LBB 3540/15	Multi-purpose connection unit	2
LBB 3512/00	Data Distribution Board	1
LBB 4106/00 (D)	Extension Power Supply Unit	0.5	FIG 10-1 Power Handling Capacities
LBB 3508/00 (D)	Audio Media Interface unit	0.5
LBB 3423/00	DCN Interface module	0.5
LBB 3510/00	PC network card	1	REMINDER: The Central Control Unit type LBB 3500/05 has a maximum rated PCF
LBB 3513/00	Analog Audio Input/Output Module	1	value of 90 PCF. Central control units type LBB 3500/15 and LBB 3500/35 have a
LBB 4114/00	Trunk-cable Splitter	1	maximum rated PCF value of 180 PCF.
LBB 4115/00	Tap-Off unit	1
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

Bosch Security Systems 04-2003 3922 988 43318 en Power Handling Capacity