ODM OTR 700 OTDRs, Руководство пользователя

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OTR 700 User's Guide Rev02 11/2016 32
Chapter 8 OTDR Operation
Evemt Table Field Description
# Event Number:
Indicates the event in sequence, where the higher the number, the further distance from the OTDR the event
occurs. “E” (End) is the event determined to be the End of Fiber (EOF). "L" (Link) is the information relative to
the full fiber trace.
P:
Pass/Fail, if any one of the thresholds are not met for and event, the P/F column will display an "F". The
parameter that failed will be displayed in red. If all the parameters are met, this column will display a "P".
Km or KF or MI:
Event Location per unit of measure, Km for Kilometer, KF for Kilo-feet and MI for mile. This is the distance/
location that the event occurs along the fiber link.
Splice:
Event Loss, is the loss of the splice, mated pair or other effect of the fiber considered as an event. (A positive
number is the amount of dB loss and a negative number indicates a gain normally due to mismatched index of
refraction.) This is an adjustable threshold for the Pass/Fail feature. The "E" event will display N/A and the "L"
Link displays Link as these are not an event that would have meaning as a loss value.
2POINT:
2 Point Loss is the loss measured from the end of the dead zone of the previous event to the beginning of
current event. The value in the "L" line of the table for this column is the link loss. The loss from the beginning
of the trace to the event determined to be the EOF. This is the value used to determine if the fiber link passes
or fails it's link threshold.
dB/Km or Kf or Mi:
dB per Kilometer if in KM and DB/KF if in Kilo-Feet and DB/MI if in mile unit of measure. This is the
calculated loss per Km, Kf or Mi from the end of the dead zone of the previous event to the beginning of the
current event. The value in the "L" line of the table for this column is the dB Per/KM, Kf or Mi for the total link.
TYPE:
Event Type lists Splc for non-reflective events and displays a reflectance value for reflective events. The "E"
end event is marked End and the "L" event displays the System ORL.