Jenne, Cheryl, Jim and Rahul

We have re-measured the transfer function (for Pitch dof only) for all the QUADs and Beam Splitter after Jim changed the HEPI to offline state. We can confirm that all the suspension looks healthy and is free of any rubbing.

Please find the plots attached below.

Note - during the tf measurements the ISI (stage 1) has damping loop turned ON. We are not rubbing with the isolation loops are ON then we should also not be rubbing when they OFF (Jim stated that the isolation loops do not affect their DC position).

The motivation for this re-measurements comes come Cheryl's alog (55848) which suggested that L2 stage for ETMY is rubbing.