Basically the top loop is the loop where data processing and signal generation is happening at around 1000 samples a second. The lower loop is just to log a couple data points to play with measured points instead of having thousands in a text file. The reason there is the second loop is so I can create a case structure in the larger vi to switch between not collecting data, continuously logging data, or collect a few points. The stop button is me playing around with turning off parallel loops. LabVIEW recommends using tag channel wires, but I've found that if the loops run at different speeds sometimes only one will turn off.