What is the index of the received signal channels when I capture the data via MATLAB. For example, I am receiving signals (direct cable connections) in Rx0 and Rx14. In MATLAB if I plot all 16 channels together I am getting the plot. But if I just want to see one channel that is receiving the signal I can't see it if I give the index RxData (:,1) for Rx0 channel and RxData (:,15) for Rx14 channel. I have to give RxData (:,4) and RxData (:,13) respectively to plot signals from the enabled channels. How the indexing is done on the board?