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8169A Polarization Controller Self-test

Question asked by rasha on Sep 10, 2014
I set the output of 8169A Polarization Controller to a certain value. I monitor the output by connecting it to a polarization analyzer. But after some time, sometimes after 30 minutes or 1 hour or 2 hours, I notice that the device has performed a self-test without any prior notice! Is there a way to keep the output stable and not to perform those sudden self-tests?