EXFO FTB-5700 Single Ended Dispersion Analyzer for FTB-200 v2 - Manual (Page 79)

Troubleshooting
Single-Ended Dispersion Analyzer 73
Solving Common Problems
There are not enough
valid points to compute
the model fit due to
detector saturation
conditions in the
selected range.
³
Fiber end is too
reflective.
³
Unsuitable FUT.
The FUT must not
cut the 1550 nm
wavelength.
³
If you have put a reflective
termination at the end of the
fiber, remove it.
There are not enough
valid points to compute
the model fit due to a
combination of detector
saturation and low
power conditions in the
selected range.
³
Fiber end is too
reflective.
³
Unsuitable selected
wavelength range
for the measured
FUT (out of the FUT
bandwidth).
³
Unsuitable FUT.
The FUT must not
cut the 1550 nm
wavelength.
³
If you have put a reflective
termination at the end of the
fiber, remove it.
³
Select a wavelength range that
suits the FUT and the instrument
range. You can set the
wavelength range in the
Acquisition tab of the Setup
window.
Message Possible cause Solution