The 3 attached files show the RF coming from the LSC REFL PD at the 9MHz output for REFL_A and REFL_B, as well as at the 45MHz output for REFL_A. Each plot shows three measurements: one at 1.8W and two at 37W, early and late in a lock. There is quite some variation between the two 37W measurementns, but this might just be due to seismic activity. See previous alogs 45863 and 44771.