As the designed ASC filters in this entry had too little phase margins (~10deg), I had to compromise the servo design.
The design was modified and tested again. This will be reported by a following entry.
Incidentally, I have adjusted the demodulation phases of REFL33/55/165 for PRMIsb so that the PRCL is eliminated from the Q signals.
REFL33 125.5 deg -> +136.5 deg
REFL55 45.0 deg -> + 25.0 deg
REFL165 -79.5 deg -> + 44.5 deg
This change of the demod phase for REFL165 was a bit surprising.
I did not check the sign, so it could be -135.5 deg. But still this is a bit change.