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A normal trace shows as above, the A mark is a start-peak and the B
mark is an end-reflection-peak. The tested trace is oblique, the total loss
will become bigger with the increasing of the fiber length. The total loss
(dB) divides total length is the average loss (dB/km) of a fiber.
Curve with Jumper Connected
If there is additional reflection peak in a tested trace, this may be caused by
a connection point or some other reasons. Anyway, appearance of the reflection
peak shows that the two connecting surfaces of the connection are smooth. The
smoother the connection surfaces are, the higher the reflection peak is.
For an instance, if a broken optical line is under test, the OTDR trace will show a
broken point. After a maintenance of this line, use the OTDR test it again, we may see
a reflection peak replacing the broken point on the OTDR trace, this shows the
maintenance is done.
Curve with Broken Point
Summary of Contents for Ofix GP-1000
Page 1: ...1 44 OFIX V1 0 User s Manual...
Page 9: ...9 44 Names and Functions of Parts OFIX Interface 2 1 3 4 5 6 O F I X...
Page 11: ...11 44 OFIX LCD 2 1 4 5 6 7 3...
Page 13: ...13 44 OFIX Viewer PC 2 1 3 4 5 6 7 8...
Page 36: ...36 44 Background Information on Measurements Viewing the Optical Pulse Measurement Waveform...
Page 42: ...42 44 Dimension Unit mm...