When using both the MOD 101T HDMI-COFDM or MOD 101C HDMI-QAM, make sure that the HDMI input isn't under copyright protection.

Some Blu-ray/DVD-players and STB uses HDCP / DRM protection on the HDMI. This will result in a black screen, on the output on the MOD 101x.

Both boxes autodetects the HDMI resolution on the input.