AD1000 User’s Manual
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12.5 Measure Reflectance
Reflectance is the ratio of reflected power (Pr) to incident power (Pi) of an event
(such as a connector).
Reflectance = 10 log (Pr/Pi).
1.
Click {Markers} label in OTDR main interface to show Marker A and B.
2.
Click [Refl.] button to show marking points.
3.
Before measurement, zoom in the trace and place Marker A to the end of
linear part of the trace before the event.
4.
Move the first marking point to the beginning of the linear part of the trace
before the event and Marker A.
5.
Move the second marking point to the end of the linear part of the trace
before the event and Marker A.
6.
Place the marking point behind Marker A to the peak of the reflection event
to be measured.
7.
View the reflectance.
Above process is applicable to measuring all reflection events’
reflectance even they are very close to each other.
