Exfo FTB-700 for FTB-1 Manuel d'utilisateur télécharger pdf (Page 253)

Analyzing Traces with the Bidirectional Analysis Application (Optional)

OTDR 245

Setting Pass/Fail Thresholds

You can activate and set Pass/Fail threshold parameters for your traces and

measurements. These thresholds are part of the OTDR Bidirectional

application (not of the bidirectional files). This means that once you have

set them, you can reuse them as many times as you want with other files.

You can set thresholds for splice loss, connector loss, reflectance, fiber

section attenuation, span loss, span length, and span ORL. You can apply

the same pass/fail thresholds to several test wavelengths or apply them

separately to each one.

You can set different pass/fail thresholds for each available

wavelength.These pass/fail thresholds will be applied to the results of the

A->B or B->A traces as well as the bidirectional measurement with the

corresponding wavelength.

By default, the application provides threshold values for the following

wavelengths: 1310 nm, 1383 nm, 1390 nm, 1410 nm, 1490 nm, 1550 nm,

1625 nm, and 1650 nm. However, if you work with unidirectional or

bidirectional files containing other wavelengths, the application will

automatically add these custom wavelengths to the list of available

wavelengths. You will then be able to define thresholds for these new

wavelengths. You can revert all thresholds to their default values, except if

they are associated with custom wavelengths.

The loss, reflectance and attenuation thresholds that you set are applied to

all events where such values can be measured. Setting these thresholds

allows you either to ignore events with known lower values, or to ensure

that all events are detected—even the ones for which very small values are

measured.

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Exfo FTB-700 for FTB-1 Manuel d'utilisateur Page 253