it seems some sudden slope change has occured in the ML with no visible reason.
# visible in plot2, on ML_PZT_CORR.
- It triggers some correction at the EOM_CORR. According to the actuation path cross (30 kHz) between the pzt and the EOM, EOM_CORR should be the ML_PZT_CORR signal filtered by a high pass filter. Nothing unsual there.
- the signal ML_FREQ_Q_MONIT features a small glitch contemporary of EOM_CORR and with a quite different sgnature than the one of ML_PZT_CORR: it means ML_PZT_CORR is there to compensate some freq. drift which has occured inside the ML, and is not driving the frequency of the PSL.
- the trend of the ML_PZT_CORR does not fit with other signals and confirm that the issue comes from the inside of the ML