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EXFO FTB-7000 OTDR for FTB-200 v2 User Manual

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Testing Fibers in Advanced Mode

54

FTB-7000 Series

Setting Pass/Fail Thresholds

The following table provides the default, minimum and maximum
thresholds.

Once the thresholds are set, the application will be able to perform
Pass/Fail tests to determine the status of the various events (pass or fail).

The Pass/Fail test is performed on two occasions:

³

when analyzing or reanalyzing a trace

³

when you open a trace file

Values that are greater than the predefined thresholds are displayed in
white on a red background in the events table.

The Pass/Fail threshold LED, located on the front of the unit, will also
indicate the status (green for pass, red for fail).

You can also set the application to display pass/fail messages when the
Pass/Fail test is performed.

Test

Default

Minimum

Maximum

Splice loss (dB)

1.000

0.015

5.000

Connector loss (dB)

1.000

0.015

5.000

Reflectance (dB)

–40.00

–80.0

0.0

Fiber section attenuation (dB/km)

0.400

0.000

5.000

Span loss (dB)

45.000

0.000

45.000

Span length (km)

0.00

0.0000

300.0000

Span ORL (dB)

15.00

15.00

40.00