EXFO FTB-7000 OTDR for FTB-200 v2 User Manual
Page 68
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
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