EDID Control:

The rotating switch controls the functionality of the Downscaler. To set a particular mode:

1)Power OFF the Downscaler.

2)Using a small flat head screwdriver, turn the arrow to the desired mode number.

3)Power ON the Downscaler.

0
Used saved EDID after copying from a TV using mode 1.
1
Copy EDID from a TV and save it. Switch to 0 after saving EDID.
2
Use EDID profile 4K, HDR, 8 Channel Audio*1
3
Use EDID profile 4K, HDR, 6 Channel Audio
4
Use EDID profile 4K, HDR, 2 Channel Audio
5
Use EDID profile 4K, No HDR, 8 Channel Audio*1
6
Use EDID profile 4K, No HDR, 6 Channel Audio
7
Use EDID profile 4K, No HDR, 2 Channel Audio

Use F to pass through full 4K and duplicate audio. 

*1Optical Audio will not output if audio has more than 6 channels.

A,B,C,D,E,F setting is not currently used