After that we checked the centering of the three B2 photodiodes using the picomotors. B2_M5_H: +200 steps, B2_M6_H: +4000 steps, B2_M6_V:+4000 steps, B2_M5b_H:+2000 steps.
The attached figures compare the spectra of the audio channels in the three photodiodes. The B2_PD2 photodiode spectrum has been rescaled by a factor 0.2.
There is no obvious difference between the B2_PD3 spectrum and the other photodiodes any more which indicates that the clipping has been removed.
