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Chapter 1 FCOMP/-PRO Principles
FCOMP/-PRO Tests description
Real time bi-directional OTDR analysis: Loopback
Method
This test is used to perform a bi-directionnal OTDR process and analysis on 2 fibers, at
the same time, using a single test device
Requirements
To perform a loopback measurement, you need:
•
Launch cable/cord
•
Loopback cable/cord
•
Receive cable/cord
•
To get the right match of events, it is important to validate the link continuity/route
of the two fibers by using a VFL or the real-time OTDR mode
Measurement process
To perform the measurement, follow the wizard that guides the user through the different
steps of operation. A technician at location A, connects the launch & receive cable/cord
to the two fibers to be tested. A second technician at location B, connects the loopback
cable/cord that will "loop" the two fibers together.
1
Once the installation and configuration are performed, press START and follow
the popup indications
2
Once completed, disconnect the launch cord from the device. Then, connect the
receive cord, which will then become the launch cord.
3
Press S
4
At the end of the process, the results (average loss values coming from both
directions, both ends) are displayed in the SmartLink tab. A switch button allows
to view 1st fiber or 2nd fiber bi-directional OTDR results.
8
to launch the test on the other direction.
TART
User Manual
700MAN203 Rev. 007
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