[Gabriele, Elenna]

Since we saw high coherence betwen DHARD_Y and DARM, we tried to improve the A2L. In summary, the current value of 1.65 is the best for angular coupling at ~30 Hz, so we didn't change it.

To do the measurement, we injected two lines, one at 15.1 Hz and one at 30.3 Hz, and used a python script to demodulate the lines in DARM. The lowest coupling at 15.1 Hz is obtained for a larger value around -2.4, but this makes the coupling at 30.3 Hz larger. The initial value is the best for minmize the coupling at 30 Hz, where DHARD is limitign DARM.