User guide

Tunable Laser Source 57
8 Troubleshooting
Solving Common Problems
If you encounter one of the problems listed below, try to solve it first with
the given information. In all cases, if the problem persists after performing
a recommended action, contact EXFO immediately.
Problem Probable Cause Recommended Action
Source appears unstable. Stabilization time
was insufficient.
Wait at least 60 minutes for
optimum stabilization.
Reflection is
destabilizing the
source.
Use an optical isolator with
your source.
There was an
ambient
temperature
variation.
Control ambient
temperature.