[Matteo, Aritomi]

Yesterday we found low frequency oscillation of CC2 error signal and tuned frequency of CC PLL and CC1,2 demodulation frequency to remove this, but we found that binary number of these frequencies were different. Frequency difference between CC PLL and CC2 demodulation was actually 0.04Hz and this may cause low frequency oscillation of CC2 error signal. Then we tuned binary number of CC PLL and CC1 demodulation frequency. Current setting is as follows. I attached the pictures to be sure. Note that CC PLL frequency is divided by 3 at PLL board.

We'll check CC2 error signal and AOM frequency of CCSB next week.