Since I purchased my DX8, the one question I have been asked the most is "what is the Raw Input Test Menu?". Well in the video below I explain what it is. I don't however know what the code is on the bottom left although I'm sure it's a diagnostic code of some sort or maybe that is the code that is going to the Rx so it knows what switch has been flipped. If you know for a FACT what this code is, post below and let me know. Hope you enjoy 
