Unless I'm missing something, the legacy SLM implementation does not change the polarisation rotator when using the test SIM sequence we can trigger from the device's GUI.
As I'm constructing a SIM_SLM device that mixes a microscope-slm I guess I could mix, on top of the trigger handler, the handler for the polarisation rotator. Maybe I could event remove all together the polarisation rotator device and merge it into the SIM-SLM device...
What do you think?