Cabletron Systems EPIM F3, Руководство пользователя

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CHAPTER 4: TESTING AND TROUBLESHOOTING
4-2 FOT-F3 USER’S MANUAL
4. Following the instructions for the test set, test the jumpers
to get a reference level. Make a note of this reading.
5. Disconnect the jumpers from the barrel connector.
6. Using the jumper, attach the optical power meter to one
end of one strand of the link segment.
7. Using the other jumper, attach the other end of the same
strand to the optical source unit.
8. Take note of the reading on the optical power meter. This is
your test level.
9. Subtract the reference level found in step 4 from the test
level to find your dB loss for the fiber optic link segment,
i.e., dB loss = Test Level - Reference Level.
10. Verify that the reading on the receive unit matches the
specifications listed in the Fiber Optic Interface section of
Appendix A.
11. Repeat steps 6 through 10 for the other strand in the link
segment. If the fiber optic link segment does not meet the
specifications, try cleaning the connection at each end of
the cable with a soft, clean, lint-free cloth with alcohol, then
repeat the test. If this is unsuccessful, contact Cabletron
Systems Technical Support as described in Chapter 1,
Getting Help, for additional help.