I was trying to get EEG data through command line using the research presets. I used a 2014 headband. After I connected museband with my computer, I gave the command line “muse-io --osc-timestamp --preset AD”. The sampling rate was supposed to be 500 Hz. But when I extracted raw data from the output file and calculated the sampling rate based on my recording time and no. of samples I actually got, I found out that output frequency is 200 Hz instead of 500. I also tried AD, and AE. None of these preset command gave me 500 Hz sampling rate. Can anyone help me out here? Thanks.