BOSEM diagonalization tests were run remotely using the FMY Vertical and Yaw degrees of freedom. 

The measurement is a transfer function of the Euler DoF to the individual OSEM responses.  The excitation was a sine wave at 1.4 Hz with an amplitude of 800cts for "Yaw" and at 1.1Hz with 150cts amplitude for "Vertical".  

The goal is to have the responses of the individual OSEMs that directly contribute to the respective Euler-basis DoF be about ~30dB isolated from the other individual OSEMs.  For "Yaw", the Euler DoF is comprised of equal but opposite sign contributions from OSEMs "F2" and "F3".  In "Vertical", the Euler DoF consists of equal contributions from OSEMs "LF" and "RT" of the same sign. The transfer function responses from the remaining OSEMs should be ~30dB below the responses from these contributing OSEMs for their respective DoFs.

For the Vertical DoF, the "LF" and "RT" OSEMs are about 10-16dB isolated from the "F1","F2", and "F3" OSEMs.  The "SD" OSEM, however, seems to be completely coupled with the "Vert" Euler DoF. An adjustment of the flag position inside the OSEM for "SD" would be needed to decouple this OSEM from the "Vert" DoF.

The attached plot for "Yaw" shows the magnitudes of "F2" and "F3" at 1.4Hz to be about ~20dB above the responses of all the other OSEMs.  Ideally, ~30dB of isolation is the goal.  

The adjustments to the flag alignments would be best done with these DTT measurements run in real time in between OSEM adjustments.  

DTT .xml templates found in:
'/ligo/svncommon/SusSVN/sus/trunk/BSFM/H2/Common/dtt_templates/'

Yaw DoF file:
"FMY_OSEMDiagonalization_YtoF2F3_1p4Hz.xml"

Vertical DoF file:
"FMY_OSEMDiagonalization_VtoLFRT_1p1Hz.xml"