The driver used for RVG6500 on Windows 11 are not available on Carestream's website, because of how old the sensor is (it's not intended for Windows 11). But here is the driver:
https://public.muntra.com/SetupRVG-Carestream-2018.exe
After installation, the setup wizard can be triggered by opening a file in this folder:
C:\Program Files (x86)\Common Files\Trophy\ServiceTools\RVG\Commons