Optical Network Design; Introduction; Calculation Tool; Limits - Bosch DCN Next Generation Installation & User's Instructions

DCN Next Generation | Installation and User Instructions | System Design and Planning
2

Optical network design

2. 1

Introduction

The DCN Next Generation has two parts: the DCN and
the optical network. This chapter tells how to design the
optical network.
2.2

Calculation tool

The calculation tool makes the planning and design of
the optical network easier. You can find the calculation
tool on the CD-ROM that is supplied with your system.
2.3

Limits

Make sure that these limits are not exceeded when you
make the optical network:
Limit 1: Control capacity
The maximum number of nodes in the optical network
is 63 (refer to section 2.4).
Limit 2: Number of devices
The maximum number of devices that you can connect
to the optical network of the central control unit is 16.
The maximum number of devices that you can connect
to the network controller is determined by the control
capacity.
Limit 3: Power capacity
The optical network sockets of the central control unit
or network controller can supply the following
maximum powers (also refer to section 2.5):
• Central control unit - total maximum power of 65 W
for all sockets.
• Network controller - maximum power of 55 W for
each socket.
Limit 4: Cables
Refer to section 2.6:
• The maximum length of a POF cable is 50 m.
• The maximum cable length (POF and GOF) of the
optical network is dependent on the number of
nodes in the optical network.
• The minimum bend radius of a 90 degree bend in a
POF cable is 25 mm.
• The minimum coiling radius of a POF cable is
100 mm.
Bosch Security Systems | 2007-02 | 9922 141 70525
2.4

Control capacity

Each device in the optical network has a number of
nodes (refer to table 2.1). The maximum number of
nodes in the optical network is 63.
table 2. 1 : Nodes
Device
DCN-CCU
LBB4402/00
LBB4404/00
LBB4410/00
LBB4414/10
INT-TX04
INT-TX08
INT-TX16
INT-TX32
PRS-4DEX4
DCN-NCO
2.5

Power capacity

2.5.1 Introduction
It is important that the devices in the optical network do
not use more total power than you supply to the
devices. Each device uses power and most devices do
not have an independent power supply.
2.5.2 Power consumption
The table 2.2 shows the power each device in the
optical network uses.
table 2.2: Power consumption
Device
LBB4402/00
LBB4404/00
LBB4410/00
LBB4414/10
PRS-4DEX4
Note
The Integrus transmitters do not use power from
the system.
en | 23
Nodes
2
1
1
1
0
1
2
4
8
1
3
Watt
7.6
10.5
3.9
4.6
6.0