OTDR measurements should be performed in each direction and averaged for which of the following reasons?
A. OTDRs are not consistent measurement tools; therefore, multiple measurements must be made
B. Variations in fiber properties (backscattering) change the OTDR measurement, depending on the direction of the measurement; bidirectional averaging eliminates these effects
C. Fibers transmit preferentially in one direction; therefore, measurements must be made to determine the preferential direction
D. None of the above
Show Answer
Answer: B
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