J. Kissel, S. Dwyer
WP #5366

Continuing to pursue OMC ASC diagonalization (see LHO aLOG 19691), I've made changes to the top level of the OMC SUS front end model such that the ISC signals go through the originally intended ISC path, i.e. through the ISCINF, LOCK, and DRIVEALIGN banks. This is such that we can *use* the drivealign matrix to decouple L, P and Y drive. I've made the change in such a way that this is only a top-level model change, and does not impact any library parts. Sadly this means that the implementation is rather ugly, but if the new scheme is successful, we'll submit an ECR to clean up the model and install the scheme properly during a maintenance day. 

I've saved, compiled, installed, restarted the model, confirmed that all settings have been restored as expected, confirmed alignment sliders at the same value, and that the "new" (or remapped) drive signals arrive in the expected banks as expected. Since the former paths were not disconnected, this change is entirely backward compatible; all previous alignment schemes will still work.

The development of the control filter implementation has now been handed off to Sheila.