Phase 3b spectra (in chamber, in vacuum) was taken last week and has been processed today. During the measurement, HEPI was floating, and ISI was isolated with level 3 and blends at "start".
Also, I plotted a comparison of ETMX and ETMY main chain and reaction chain top mass transfer functions for the 6 DOF, from last week's measurement.

SPECTRA

1) ETMy / ETMx spectra comparison SUS damping off
2) ETMy / ETMx spectra comparison SUS damping on
3) ETMy main chain damping on / damping off comparison
4) ETMy reaction chain damping on / damping off comparison

Spectra look good. Only F2 osem of ETMY main chain has an unexpected sharp peak at ~30Hz (can be seen on 4 pdfs). ETMy amplitude is higher than ETMx due to the ISI state being different. Reaction chain Vertical and Yaw damping could be improved looking at the comparison damping on/off

TRANSFER FUNCTIONS

4) ETMx / ETMy M0-M0 and R0-R0 TF comparison damping OFF
5) ETMx / ETMy M0-M0 and R0-R0 TF comparison damping ON

Again, TFs look good and results of ETMy are matching the ones from ETMx, except for Pitch which has its second mode (1.33Hz) shifted down for ETMx