Cabletron Systems 38, User Manual

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FOMIM User’s Guide 3-1
CHAPTER 3
TESTING AND TROUBLESHOOTING
This chapter lists the installation checkout procedures necessary to verify
that the segments connected to your FOMIM are operating properly. The
chapter concludes with a description of the LANVIEW LEDs and their
use in troubleshooting physical layer network problems.
3.1 INSTALLATION TEST
This section contains procedures to test the following:
• The fiber optic link segment to be attached to the FOMIM
• The link between the FOMIM and the device attached to the other end
of the fiber optic link segment
• The FOMIM itself
3.1.1 Testing the Fiber Optic Link Segment
Test the segment being attached to the FOMIM to verify that the cable
meets the fiber budget specifications discussed in Appendix A. Using a
fiber optic power meter set, test the link segment as follows:
1. Attach a fiber optic jumper to the optical power meter. The meter
should be set at 1300 nm.
2. Attach a fiber optic jumper to the optical source unit. If the source unit
has multiple settings, it should be set at 1300 nm.
3. Using a barrel connector, connect the jumpers together.
4. Following the instructions for the test set, test the jumpers to get a
reference level. Make a note of this reading.
!
C AUT IO N
Do not touch the ends of the fiber optic strands, and do not let
the ends come in contact with dust, dirt, or other contaminants.
Contamination of the ends can cause problems in data
transmissions. If the ends become contaminated, clean them
with denatured alcohol using a soft, clean, lint free cloth.