QUAD 04 BUILD 03

Now that the QUAD 04 has become BUILD 03, OSEM diagonalization measurements were performed this afternoon on the M0 and R0 top masses.  Two degrees of freedom were used for excitations while the responses of the individual OSEMs were plotted.  

The first attachment is of the M0 "Vertical" DoF diagonalization measurement. The excitation was a sine wave at 2.25Hz with 100cts of amplitude. The OSEM isolation from "Vertical" is at about ~34dB.

The second attachment is of the R0 "Yaw" DoF diagonalization measurement.  The excitation was a sine wave at 1.3Hz with 100cts of amplitude.  The "F1" OSEM isolation is at about ~24dB.  All other OSEMs are more isolated from "Yaw".

The third attachment is of the R0 "Vertical" DoF diagonalization measurement.  The excitation was a sine wave at 2.25Hz with 100cts of amplitude. The isolation is at about ~38dB from non-"Vert" OSEMs.

The M0 "Yaw" measurement was also performed with the same parameters as the R0 top mass and produced results that indicate "F1" is ~24dB isolated from "Yaw".  The plot was lost during a DTT crash, but will be posted when re-measured.