2-11
IM AQ1210-01EN
Setting Up the OTDR Feature
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App
App
Index
Index
Explanation
Splice Loss
If a splice loss that exceeds the specified threshold occurs, it is detected as an event.
The range is 0.01 dB to 9.99 dB.
Return Loss
If a return loss that is less than or equal to the specified threshold occurs, it is detected as an event.
The larger the reflection, the smaller the return loss, so events (reflections) are detected when the
return loss is less than or equal to the threshold.
The range is 20 dB to 70 dB.
End of Fiber
If a reflection that exceeds the specified threshold occurs, it is detected as the end of the optical fiber
cable (Fresnel reflection).
The range is 3 dB to 65 dB.
Splitter Loss
Events whose loss exceeds this value are assumed to be optical splitters according to the number
splits.
The range is 1 dB to 20 dB.
Macro Bending (Bending Loss)
When an optical pulse measurement is performed in multi wavelength measurement (when wavelength
setting is 1310 nm/1550 nm), you can compare the splice losses at each wavelength and display on
the screen bending loss events that are caused by bends in the optical fiber cable.
Display
This function displays the detected bending losses in the event list on the event screen when optical
pulses are measured.
OFF: The bending losses are not displayed in the event list.
ON: The bending losses are displayed in the event list.
Threshold
This is the threshold of the difference between the splice losses of each wavelength when optical
pulses are measured.
When the difference between the splice losses of each wavelength for the same event is larger than
this value, the event is detected as a bending loss.
The range is 0.001 dB to 99.999 dB.
Launch Fiber Setting
When you connect a launch fiber cable to avoid near-end dead zones, you can set the launch fiber
cable events (start point and end point) or start position so that the event information in the launch
fiber section is excluded from the analysis conditions.
Pass Fail Judgment
A judgment is performed on the events detected in the target waveform, and those that exceed the
specified threshold are displayed as fault events on the event screen.
ON: Pass/fail judgment is set to ON, and events that have exceeded their thresholds are displayed
with an asterisk attached to them (see section 1.5).
OFF: Pass/fail judgment is set to OFF, and events that have exceeded their thresholds are not
displayed with an asterisk attached to them.
2.2 Analysis (Analysis) Conditions
