Specifications

RADring
Installation & Operation Manual Functional Description
3/11/98 12:33 RI/RO Modules Functional Description 2-35
Protection in Case of Power Loss
In case of power loss, the TFR automatically loops the main path to the
back-up path, as shown below. Note that in this situation, the repeater is not
included in the ring (as it is not powered).
When the cable break protection is enabled and the optical input signal is
lost, the TFR at the far end will also detect the loss and will perform looping
to the back-up path.
TFR
FIBER-OPTIC
RECEIVER
FIBER-OPTIC
TRANSMITTER
MAIN
PATH
BACKUP
PATH
TX
RX
REPEATER
SECTION
Figure 2-26 TFR Loops to Backup Path
7)55,
7)55,
TFR-16(RO)
7)552
Figure 2-27 TFR Application