EXFO FTB-7000 OTDR for FTB-200 v2 - Manual (Page 54)

Testing Fibers in Advanced Mode
40 FTB-7000 Series
7. If your OTDR supports singlemode, singlemode live, or multimode
wavelengths, under Wavelengths, from the list, select the desired fiber
type (for live-fiber testing, select SM Live; for C fiber, select 50 μm and
for D fiber, select 62.5 μm).
8. Select the boxes corresponding to the desired test wavelengths. You
must select at least one wavelength.
9. Select the desired distance, pulse, and time values. For more
information, see Setting Distance Range, Pulse Width, and Acquisition
Time on page 45.
10. Press Start or from the keypad. If the first connector check
feature is enabled, a message will appear if there is a problem with the
injection level (see Enabling or Disabling the First Connector Check on
page 28).
You can modify the acquisition parameters as needed, while the
acquisition is in progress. The OTDR simply restarts the averaging each
time a modification is made.
11. Once the analysis is complete, save the trace by pressing Quick Save
in the button bar or from the keypad.
The application will use a file name based on the autonaming
parameters you defined (see Naming Trace Files Automatically on
page 24). This file name appears at the top of the graph and at the top
of the linear view table.