EXFO FTB-3930 MultiTest - Manual (Page 32)

Measuring Power or Loss
26 FTB-3930
Measuring Power or Loss
Measuring Power or Loss
Measuring absolute power or link loss is done the same way, except for the
referencing step. You can take power or loss measurements and save them
for further analysis.
To perform power or loss measurements:
1. If necessary, perform an
offset nulling (see Nulling Electrical Offsets on
page 22).
2. From the main window, select the Power Meter tab.
3. Check your fibers and clean them properly (see Cleaning and
Connecting Optical Fibers on page 12).
4. For loss measurements, reference your power meter to a light source
(see Referencing Your Power Meter to a Source on page 23), then
deactivate the light source.
5. If you have used a single reference patchcord, disconnect it from the
power meter port only, then attach a second reference patchcord to
the power meter.
OR
If you have used two reference patchcords, disconnect both of them at
the bulkhead.
C
AUTION
Connect high-power live fiber to the power meter port only.