EXFO FTB-7000 OTDR Series for FTB-500 - Manual (Page 107)

OTDR 93
7 Testing Fibers in Template
Mode
Template mode allows you to test fibers and compare them to a reference
trace that was previously acquired and analyzed.
Template Principle
Cables contain numerous fibers. Theoretically, on all these fibers, you will
find the same events at the same location (due to connectors, splices,
etc.). Template mode allows you to test these fibers one after the other
quickly and efficiently and ensures that no event remains undetected.
The Template mode concept is to acquire a reference trace (template),
add comments about the events as well as information and comments on
the current job, then save the trace.
For a more accurate reference trace, you can update it with new events
that may occur during the first acquisitions (the number depends on how
many reference acquisitions you wish to perform).
When events are added to the reference trace, the application
automatically updates previous traces. For example, if an event occurred
on the sixth acquisition, the application would update traces 1 through 5.
The test application will flag possible problems and discrepancies between
the reference trace and other traces.
Each new acquisition will be compared to the reference trace and the
software will mark and measure any missing event.
Comments for events in the reference trace, as well as the reference trace
report, are automatically copied to subsequent traces.