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Simple identification of fiber quality

Under normal circumstances, the main body of the OTDR test light curve (single tray or several trays of fiber optic cable) slope is basically the same, if the slope of a section is larger, it indicates that this section of the attenuation is larger; if the main body of the curve is irregularly shaped, the slope is more undulating, curved or arc-shaped, it indicates that the fiber quality is seriously deteriorated and does not meet the communication requirements.