After increasing the power into the ref cav yesterday and religning the FSS path today, we can lock the ref cav with 5.65V on the transmitted PD. Visibility is low, around 66%, so that will have to be worked on next.

I adjusted WP4 to change the DC voltage on the RFPD to 460mV. Common gain was set to 18dB giving a UGF of 180kHz. I don't believe this to be ideal so it will also have to be changed.