Specifications

RADring
Installation & Operation Manual Functional Description
3/11/98 12:33 RI/RO Modules Functional Description 2-33
Lower jitter increases the maximum number of stations that can be
connected to the ring. The jitter attenuator can be switched on or off by a
dip switch. The regenerated signal is applied to the TFR fiber-optic
transmitter, which converts the electrical signal to an optical one, and sends
it via the fiber-optic cable to the other site.
The TFR module implemented as the RI port of the hub receives the optical
signal and reconverts it to an electrical token ring signal with full amplitude,
in effect operating as another repeater circuit in the direction of the next
station.
The TFR provides the same functions for the back-up path. The repeater
serving the back-up path is included in the TFR in the RI port.
The optical section of the TFR supports 50/125, 62.5/125 and
100/140 micron graded-index multimode fibers with a nominal range of
3 km.
A single-mode option is provided, extending the distance up to 20 Km.
Chapter 6 provides information for calculating the attenuation of fiber-optic
links and evaluating the available range.
FIBER-OPTIC
CONVERTER
FIBER-OPTIC
CONVERTER
FIBER-OPTIC
CABLES
FIBER-OPTIC
RECEIVER
FIBER-OPTIC
RECEIVER
FIBER-OPTIC
RECEIVER
FIBER-OPTIC
TRANSMITTER
FIBER-OPTIC
TRANSMITTER
RETIMING
REGENERATION
AND
JITTER ATTENUATION
RETIMING
REGENERATION
AND
JITTER ATTENUATION
TOKEN-RING
DRIVER
MAIN
PATH
MAIN
PATH
BACKUP
PATH
BACKUP
PATH
REPEATER REPEATER
TX RX
RX TX
SITE A
RO SIDE
SITE B
RI SIDE
Figure 2-24 Functional diagram of a Fiber Optic Segment