3-12
IM AQ1200-01EN
Event Search Conditions
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.
Fiber Ends (Fresnel reflection)
If a reflection that exceeds the specified threshold occurs, it is detected as the end of the fiber.
The range is 3 dB to 65 dB.
Fault Events
Display
Events that are greater than or equal to the specified threshold (or reflections that are less than or
equal to the specified threshold) are displayed as fault events.
Off: Events that have exceeded their threshold values are not displayed with an asterisk
attached to them.
On: Events that have exceeded their threshold values are displayed with an asterisk
attached to them.
Splice Loss and Return Loss
Set the threshold values that are used to display events as faults.
Splice loss: The range is 0.01 dB to 9.99 dB.
Return loss: The range is 20 dB to 70 dB.
Because the end of fibers is handled as either a splice loss or a reflection, there is no fault event
just for the end of fibers.
OK/No Good Judgement
If you have turned the fault event display on, NG (no good) or OK and the number of fault events
are displayed.
3.6 Setting Analysis Conditions
