[Aritomi, Yuhang, Michael]

Today we found that there was a 250Hz noise in CCFC signal and this noise came from low UGF OPO lock due to OPO demodulation phase change. After reloading the DDS1, this problem was solved.

After that, we found that FC lock was unstable even when Z correction, pointing, AA were engaged. In the end, FC could not be locked at all. We will investigate it next week.