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Abnormal Condition
The situation that there is no reflection peak at the end of a trace shows above
should be paid attention on. If the distance of the tested fiber is available and the
distance shown on OTDR is not equal to the original distance, this shows that the
fiber might be broken down or twisted and the bending radius of it is over limited.
The distance shown on OTDR is the position of the fault point.
This phenomenon is often used in maintenance. If a fiber is uncertain, we can
bend a fiber and make sure the bending radius is over limited, then use real time
testing function of the OTDR to confirm the fiber.
Distance is too long
This situation often happened in a long distance testing, caused by
under-
range dynamic range of the OTDR that the energy of it cannot support a long
distance transmission or caused by an under-range preset testing range of
distance or pulse width corresponding to the actual fiber length.
To avoid this situation, adjust the testing distance and the pulse bigger and
extend the sampling time.
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...
