| 摘要 |
<p>In a method and apparatus for scanning a fiber optic network, a light source (44, 46) emits optical pulses into an optical fiber under test (40). A detector (48) detects reflected light for each of the optical pulses and converts the reflected light into an electrical signal for each of the optical pulses. A sampling circuit (62) samples the electrical signal for each of the optical pulses to generate sets of sample data points associated with the respective optical pulses. A signal processor (34) is programmed to ensemble average the sets of sample points with each other to generate a merged set of average sample points. The signal processor (34) then compresses the merged set of average sample data points to obtain a current set of trace data points. The current set of trace points is compared with a reference set of trace points stored in memory to determine whether or not a fault exists in the fiber test.</p> |
