I've never used DVCPRO gear before and we're having trouble outputting from M100HDx 12.1.2 out to the DVCPRO deck (don't have the model number available).
Importing footage seems to work fine. Video settings in and out all correspond to the DVCPRO 720p standards. We checked the menu items on the deck and the video and audio inputs appear to be correct. When mastering to tape via SDI the deck records but is not getting any signal.