Just bought a new UMC-200 and still trying to learn how to use it. Got a quick question though... What does the "TV" button on the remote do? There are 4 HDMI inputs and 4 HDMI buttons on the remote but cant figure out what "TV" does. Couldn't find anything online or in the manual.
"Remote Hot Key; allows you to program which input is associated with each of the Direct Input hot keys on the remote control. For example, you might want to associate the “TV” button on the remote control with the input your cable box is attached to."
5.1 HT Play Room-LG 4K TV, Fusion 8100, Chane Arx 5's, Chane A2rx-c Center, EMPTek E5bi's & ES1010i sub, Apple TV 3, Oppo 105
5.1 Home Theater Room-Optoma HD33, Tekton Pendragon Monitors, Klipsch Sub12, Sherbourn PT-7030, Parasound 5125, Oppo BDP-93, Roku 3, Fire TV
If I remember correctly (my UMC-200 unit is waiting for its replacement power module), by default the TV button is mapped to the audio return channel of the HDMI output, which is usually connected to a TV.
The manual says you can re-map it but it doesn't say how. I'm assuming it's in the menu somewhere and hopefully easy to figure out. At this point everything else is working so I'm just using it as-is. Maybe someday, when I have free time, I'll go poke around and try to figure it out. There's so much about this unit I still need to learn.