EXFO FastReporter 2 - Manual (Page 280)

Viewing and Editing Measurements
270 FastReporter 2
Editing Measurement Identification Information
Modifying the Calibration Date for OTDRs
Sometimes, older OTDR models do not provide the right calibration date
required to view the data and perform your analysis. You may need to
change it.
In your OTDR result display, you can see the calibration dates for units A
and B, if there are any. You can modify the calibration date of the OTDR file;
the updated calibration date is saved in corresponding OTDR file.
The application allows you to edit the calibration date for the OTDR
measurements based on the following conditions:

If the file direction is A->B, you can change the date of location A.

If the file direction is B->A, you can change the date of location B.

If the file is in OTDR Bidir format, you can change the date of both
locations A and B
Note: The application displays the date range for up to the last ten years for the
calibration date. If no date is indicated, and you want to edit the calibration
date, the application displays the date range up to the previous month.