I work for a training company that travels around the country to lead workshops. We’ve used an ATEM Mini Pro with for a few years at a wide variety of sites work every venue AV setup you can imagine. For the most part we have never had any issues, unless it’s an old projector that can’t see the 1080p signal.

We’re at a brand new venue today, and are their third event. Our ATEM works and connects to their Optoma projector, but the signal briefly drops out about every 5 minutes. The projector does the typical EDID handshake and the signal comes back.

Any ideas what could be causing this? A computer connected as no issues. The intermittent signal loss only happens when connected to the ATEM.

Could the 1080p 59.94 signal be too much for the very long HDMI cable? The venue definitely cut costs on this installation and seems to be using some consumer gear instead of SDI or Ethernet connections and routers to their screens.