[Aritomi, Eleonora, Matteo]

To reduce LO backscattering, we reduced LO power by a factor of 10. We also increased CC2 gain from 3 to 10.

Attached picture is FDS when CC2 demodulation phase is 20deg and 40deg. There is still large bump below 60Hz.

We thought the bump is changing when CC2 demodulation phase is changed, but it seems that bump itself doesn't change with CC2 demodulation phase.