We noticed that the demodulation phase of the OMC locking error signal B1_PD3 was very mistuned (with the Q signal higher than the I signal). We corrected it by changing the demodulation phase from 0.5 to 1.5 rad. The external configuration file was reloaded at 13h07 utc.

While the ITF was in Low Noise 1, we also adjusted finely the demodulation phase of the B1 error signal, by chaging the phase from -1.3 to -0.7 rad. External configuration file reloaded at 13h17 utc.