During the DRMI trial I noticed that the f2p filters on PRM is not quite effective (i.e. pushing PRM in POS direction makes misalignments).
I checked the f2p filters in an easy way. I pushed POS at 0.01 Hz with an amplitude of 1000 counts and looked at the oplev error signals with / without the f2p filters.
The picture below is a time series of the POS excitation, the oplev's PITCH and YAW error signals.
You can see there still is a big coupling from POS to YAW after the f2p filters were enabled. (Its supposed to be like this)
I will redo the f2p measurement on PRM.