This morning the Romains have made several scans of the SPRB bench. We have observed several interesting things, that need a more careful analysis, but in this entry we plot the relevant scans for reference
We have observed the usual opposite behaviour between carrier / 56MHz on PD2.
We have osberved that the DPHI of the SSFS (which uses B4 PD2) changes as the bench moves.
We have also noticed that the BS and PR mirrors move angularly during this test, as well as OgPR.
*During the shift we had some problems with the lock acquisition, in particular during OMC1 lock the ITF was too misalign. So I restored a different offset for the DIFFp_TY during the lock of the OMC1, to keep it aligned.