Optic MiniCourse: Reading An OTDR Trace
U MiniCourses are courses on a specific topic that you can
take in about an hour or less. They are based on questions
people ask FOA all the time, so the topics are recommended
by our readers.
course is intended for anyone involved in fiber optics
who wants to understand the information in an OTDR
testing fiber optic cable plants
of fiber optic communications networks
Contractors and techs who install, operate and maintain
From this self-study program you should learn:
information included in an OTDR trace
those events are generated
those events are interpreted
U has a course on OTDR
Testing that is excellent preparation for this
you finish, you can take an online test on this course to
qualify for a "Fiber U Certificate of Completion." The
test cost for a Fiber U MiniCourse is $10US.
One of the questions most often missed on the FOA
CFOT and CFOS/T Testing Specialist exams is identification
of the events on an OTDR trace. This course shows you what
each part of an OTDR trace is and what information can be
gained from it.
Below is a schematic representation of an OTDR
trace showing the elements of the trace, the events the
trace can show and the information you can get from the
this lesson you can point to 9 the elements of an OTDR
trace and learn more about them by clicking on that part
of the image. When you click on a element of the trace,
it will take you to a page discussing that part of the
trace and the information it can provide.
You will find information on all these 9 elements and
events on the trace above.
Click on the elements of the OTDR trace on the diagram
above to learn more about them.
finished, you can
take a quiz (Test Your Knowledge) to complete the course.
Test Your Comprehension
See if you can identify each item on the list above in
the trace. Here are the
When you finish all the assignments you can take an online
test on this course to qualify for a "Fiber U Certificate
of Completion." The test cost is $10US. If you are taking
this course linked from another Fiber U Course, it will be
included in that course's Certificate of Completion. If
you are taking this course as part of an online course
from an instructor, they will give you directions.
here to take the Fiber U "Reading An OTDR Trace"
Certificate of Completion test. Here
are detail directions if this is your first time
taking a Fiber
U Certificate of Completion exam.
This information is
provided by The Fiber Optic Association, Inc. as a
benefit to those interested in teaching, designing,
manufacturing, selling, installing or using fiber optic
communications systems or networks. It is intended to be
used as an overview and/or basic guidelines and in no
way should be considered to be complete or
comprehensive. These guidelines are strictly the opinion
of the FOA and the reader is expected to use them as a
basis for learning, as a reference and for creating
their own documentation, project specifications, etc.
Those working with fiber optics in the classroom,
laboratory or field should follow all safety rules
carefully. The FOA assumes no liability for the use of
any of this material.