The attached plot gives decent coherence for only one OSEM drive to the other L2 OSEM responses. The responses are not completely coherent with the driven OSEM.  Drive parameters are not known well-enough at this stage to result in good coherence with only a few hours of drive paramter tuning.  The actuation and response measurements at this stage do not impact the scheduling of the BSC8 chamber close-out, but further testing could reveal discrepancies in OSEM signals.