The transfer functions measured between the T240s of stage 1 and the GS13s of stage 2 (ISI-BSC6) are presented in attachment. Transfer functions were measured with the ISI damped and excited by the ground motion. Coherence between the 2 stages in the translation DOFs are really good when the damping filters are engaged. These transfer functions can be used to realise the sensor correction from stage 1 to stage 2 (Translation only). Yesterday, I used the ratio of simulated transfer functions when the ISI is damped for the computation of the match filters.