Exfo FTB-7000 OTDR for FTB-200 v2 Manual de usuario descargar pdf (Pagina 128)

100

101

Analyzing Traces and Events

114 FTB-7000 Series

Events Tab

³ Refl.: Reflectance measured at each reflective event along the fiber.

³ Att.: Attenuation (loss/distance) measured for each fiber section.

Note: The attenuation value is always presented in dB per kilometers even if the

distance units you selected are not the kilometers. This follows the

standards of the fiber-optic industry that provides the attenuation values in

dB per kilometers.

³ Cumul.: Cumulative loss from the trace span start to span end; the

running total is provided at the end of each event and fiber section.

Cumulative loss is calculated for the events displayed in the events

table, excluding those that are hidden. For a more accurate link loss

value, refer to the loss measurement displayed in the Trace Info. tab.

If you want to modify events or fiber sections, see Modifying Events on

page 138, Inserting Events on page 142, and Changing the Attenuation

of Fiber Sections on page 146.

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Exfo FTB-7000 OTDR for FTB-200 v2 Manual de usuario Pagina 128

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