Exfo FTB-3930 MultiTest Uživatelský manuál stáhnout pdf (Strana 40)

Measuring Optical Return Loss

34 FTB-3930

Performing and Saving ORL Measurements

7. Perfor m an ORL zero measurement (see Performing ORL Reference

and Setting ORL Zero Value on page 30).

8. Terminate the fiber as close as possible after the component under

test. Wrap it at least 10 turns around a mandrel or small diameter tool,

adding turns until the reading stabilizes.

Note: Avoid bending the fiber between the unit and the termination point.

The displayed value represents the ORL of the component under test.

9. Add the displayed values to the Tested fi bers list if you want. If

auto-save is activated (see Customizing Your Multifunction Loss Tester

on page 9), results are automatically saved (along with wavelength,

date and time) after adding them to the list.

9a. Change the displayed cable and fiber names as needed.

9b. Press Add. The fiber name will increment automatically, ready to

save the next value.

For details about viewing results, see Managing Test Results on

page 49.

10. Repeat procedure for other wavelengths if necessary.

FTB-3930

MULTITEST

Te rm in ati onComponent

under test

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Exfo FTB-3930 MultiTest Uživatelský manuál Strana 40