EXFO FOT-930 Multifunction Loss Tester - Manual (Page 53)

Measuring Optical Return Loss
Multifunction Loss Tester 45
Performing and Saving ORL Measurements
7. Perform an ORL zero measurement (see Performing ORL Reference
and Setting ORL Zero Value on page 42).
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. Save the displayed values, if desired.
9a. Change the displayed cable and fiber
names as needed.
9b. Press Store (F1/F2 key) to save the
value along with wavelength, date and
time. The fiber name will increment
automatically, ready to save the next value.
For details about viewing results, see Managing Test Results on
page 55.
10. Repeat procedure for other wavelengths if necessary.
Termination Component
under test