EXFO FTB-7000 OTDR Series for FTB-500 - Manual (Page 119)

Testing Fibers in Template Mode
OTDR 105
Acquiring Traces in Template Mode
5a. Once the analysis is complete, save the trace by pressing Save in
the button bar.
If you have activated the autonaming feature, the application will
use a file name based on the autonaming parameters you defined
(see Naming Trace Files Automatically on page 50).
Note: The application will only display the Save As dialog box if you have
activated the feature to always be prompted when you save a file. From
this dialog box, you can change the location, the file name and the file
format.
5b. Repeat steps 3g to 5a as necessary to update your reference trace.