Belden Hirschmann OZD Genius G12, Руководство пользователя

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2.2 Redundant optical ring (two-fiber ring)
32
2 Network Topologies
Version 05 07/2014
Genius bus line
Fiber optic cable
Terminal unit(s)/
bus segment(s)
Port 3
T R
OZD Genius G12
Port 2
T R
Port 1
Terminal unit(s)/
bus segment(s)
Port 3
T R
OZD Genius G12
Port 2
T R
Port 1
Terminal unit(s)/
bus segment(s)
Port 3
T R
OZD Genius G12
Port 2
T R
Port 1
Terminal unit(s)/
bus segment(s)
Port 3
T R
OZD Genius G12
Port 2
T R
Port 1
Terminal unit(s)/
bus segment(s)
Port 3
T R
OZD Genius G12
Port 2
T R
Port 1
Fig. 4: Alternative wiring system for network structure in redundant optical two-fiber ring topology
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“. 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).