Rana, Alberto, Pete
We have the DD handoff nominally working. Sometimes, increasing the SRC gain at the end makes MICH get unstable. This could be due to a non-diagonal term in the matrix, or possibly because the DRM locks in a funky mode sometimes.
To get the DD handoff working, first we tuned demod phases in order to zero the offsets in the PD signals handed-off-to. Based on transer function measurements, I set the PRC PD6_I element to 0.1, and set the PD8_I signal to 0, since it didn't seem to be contributing much. We also commented out the MICH gain increase at the end of the DD_handoff script.
It could still be more stable, but it seems to work most of the time.