Cabletron Systems FOT-F3 - Manual (Page 36)

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TESTING AND TROUBLESHOOTING
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 Chapter 2.
11. Repeat steps 6-10 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.
4.1.2 Testing the FOT-F3 Fiber Optic Transceiver
1. Using an AUI cable (2, Fig. 4-1), connect a LAN-MD
(1) to the FOT-F3 (3).