Clear-Com FIM-202D - Manual (Page 11)

Clear-Com Communication Systems
FIM-202D Matrix Fiber Interface Instruction Manual 1 - 5
Figure 1-5: Party Line Extension Using FIM-202D
Both channels of the FIM-202D can be used allowing a second party
line to be extended using two more EF-701M units connecting to the
second “CH2 Station” ports.
FIM-202D TWO-FIBER CONFIGURATION
In a standard two-fiber system, identical FIM-202D units are used at
each location. The units both transmit at 1300 nm on ST connector
“Fiber Out” and receive the 1300 nm signal on ST connector “Fiber In”.
They are connected by the two fibers so that the optical output of each
box is connected to the optical input of the other. In both one- and
two-fiber systems, the input of channel 1 on one unit becomes the
output of channel 1 on the other unit, and vice versa.
The two FIM-202D units in the two-fiber version are identical, so the
units are interchangeable.