So I just bought a FBV2 footpedal because it's supposed to work with my Spider II 112 combo amp. However when I plug it in it doesn't do anything. So I looked into it and it seems that you need to calibrate it. Now I downloaded the user manual for the FBV series and it doesn't say how to calibrate my specific model. What do I have to do? The cable is working because I tried it with my Xbox and was able to connect, so that wasn't the problem. It would be really helpful if somebody could help me