User Manual

A A clean endface that has no damage. This is the only
condition that you can accept for a test reference cord.
B Dirt that is not on the core does not change the loss
measurement, but the dirt can move when you connect
the fiber.
C Dirt is on the core. Also, there are scratches that were
caused by incorrect procedures for cleaning.
D The cladding has damage. This does not change the loss
measurement, but can cause damage to other endfaces.
Appendix A: How to Test Your Test Reference Cords
47
1 Clean and Inspect the Connectors
1-1 Test reference cords must have endfaces that are clean
and have no damage. Always use correct procedures to
clean endfaces. See page 15 or use the procedures
given with your cleaning supplies.
1-2 After you clean an endface, use a fiber microscope to
examine the endface. Figure A-2 shows examples of
what you can see with a fiber microscope.
Figure A-2. Examples of Fiber Endfaces
amd172.eps
AB
CD