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12.5 Measuring 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 the {Markers} tab in the OTDR main interface to show Marker A and B.
2. Click the [Refl.] button to show the Marker points.
3. Before measurement, zoom-in on the trace and place Marker A to one end of the 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.
Note:
The above process is applicable to measuring all reflection events’ reflectance even they are very close
to each other.
12 Manual Trace Analysis
Содержание TP-P6
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