How to trigger accelerometer to record data at the same time as Matlab starts to play a video

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Matyas Varga 2015-9-2

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https://ww2.mathworks.cn/matlabcentral/answers/239238-how-to-trigger-accelerometer-to-record-data-at-the-same-time-as-matlab-starts-to-play-a-video

I have a script in Matlab where a video starts and participant needs to react something in the video by performing a movement. I need the accelerometer to start recording when the video starts. I have a sync box for the accelerometer but it comes with a BNC cable. WHat daq device do you recommend to use to connect the laptop to the sync box?