MTP-200 Series User’s Manual
Shineway Technologies, Inc. - 65 -
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.
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