Belden Hirschmann OZD Genius G12 Serie Manuel page 34

2 Network Topologies
If problems are encountered with the configuration
of a redundant optical ring on account of excessively
long fiber-optic line sections, connections can also be
implemented as shown in Fig. 4.
In this case, each repeater is linked (in spatial terms) with
the next repeater but one.
Two adjacent repeaters must be interconnected at the
start and end of every such line. This prevents the indivi-
dual fiber-optic line sections from being "excessively
long".
R T R T
Port 2 Port 3
R
OZD Genius G12
Port 2
OZD Genius G12
Terminal unit(s)/
bus segment(s)
Terminal unit(s)/
bus segment(s)
Genius bus line
Fiber optic cable
Fig. 4: Alternative wiring system for network structure in redundant optical two-fiber ring topology
Version 05 07/2014
T R T
Port 3
R T
Port 2
OZD Genius G12
Terminal unit(s)/
bus segment(s)
It is advisable to install the duplex optical cables of the
two optical channels along different routes.
The maximum permissible network range for the ring
topology depends on both the number of OZD Genius
G12 ... devices used and the data rate (see also Section
3.7 on page 37).
R T R T
Port 2 Port 3
R T
OZD Genius G12
Port 3
Terminal unit(s)/
bus segment(s)
2.2 Redundant optical ring (two-fiber ring)
R T R T
Port 2 Port 3
OZD Genius G12
Terminal unit(s)/
bus segment(s)
32