Coax to the projector, then a 3′ HDMI to DVI cable.
The HDP2 has a scaler in it. I didn’t want to add additional delay to the image (since it is for IMAG) that scaler processing usually introduces.
The cable is just a passive cable. HDMI and DVI are supposed to be electrically identical. This is the first instance I’ve seen where it doesn’t work.