EXFO FTB-7000 OTDR Series for FTB-500 - Manual (Page 194)

Analyzing Traces and Events
180 OTDR
Opening Trace Files
If you want to keep the current zoom and markers, you must save your file
before opening another one.
Trace that has been saved with a
manual zoom.
Application zooms in on
the first trace
(wavelength) of the file,
according to the zoom
area and zoom factor
that were saved with the
file. Application does not
zoom in on the selected
events.
The same zoom will be
applied to all traces.
Markers are displayed in
the same state they
were when you saved
the file. Markers will
remain at the same
location even if you
switch to another trace.
Old trace file Traces are displayed in
full view mode.
The first event of the
trace is selected.
Application defines
default positions for
markers.
Type of file Zoom Marker