(ONS 15454 only) Use the Wavelength Division Multiplexing (WDM) Span Check subtab to verify span
losses on the network. The span loss verification compares the far-end optical service channel (OSC) power with the near-end OSC power.
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Displays the side for which span loss information appears, either East or West.
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Displays the minimum expected span loss (in dBm) for the incoming span. This value is imported from Cisco Transport Planner, but can be manually modified.
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Displays the maximum expected span loss (in dBm) for the incoming span. This value is imported from Cisco Transport Planner, but can be manually modified.
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Displays the measured span loss value.
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Displays the resolution or accuracy of the span loss measurement. The resolution is +/–1.5 dB if the measured span loss is between 0 and 25 dB. If the measure span loss is between 25 and 38 dB, the resolution is +/–2.5 dB.
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For higher resolution span loss measurements, use an optical time domain reflectometer (OTDR). |
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Retrieve Span Loss Values
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Runs the span loss verification function and retrieves values for the measure span loss column.
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Resets the minimum and maximum expected span loss values.
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Applies changes made to the minimum and maximum expected span loss fields.
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Displays context-sensitive help.
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