Sorry to inform: you cannot put a card like that "just behind" your CD32 to work alone.
These type of cards needs:
- power supply (on several pins);
- EXTERNAL CLOCK lines;
- Drivers and even some programs in order to run.
Best way is put the card into a peecee, install the needed drivers and use it like a regular scandoubler/flickerfixer.
BTW: If you got a Mediator, there are some Voodoo cards with VI/VO plugs on!