VeEX OTDR FX150+ Series, User Manual

Page: 29 / 109

OTDR Series e-Manual, D07-00- 076P -RevD00 Page 29 of 109
6.0 Test Fiber and Initial Preparation Introduction
Dirt, dust, and other contaminants severely impact high-speed data transmission in optical
fibers and dirty connector end-faces are often the #1 cause of link failures. High insertion loss
and/or high back reflection can result in transmission loss or high bit errors and poor BER.
Furthermore, most measurement variations and test repeatability conditions in fiber-optic
systems can be traced back to the cleanliness of optical connections. Contamination of fiber
end faces not only affects optical power levels but also impacts back reflectance performance
and levels which is harmful to sensitive optical components.
Contamination of fiber end faces affecting optical power levels