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Thank for that, We were also thinking of using one of the external channels to record the sound directly form the audio jack. We were wondering what is the maximum voltage that can be fed into the AD box without saturation? Also if this saturation voltage is exceeded will the ADC be damaged? Thanks ...

Hi, We wanted to measure the onset of a sound directly from the audio jack of our presentation PC to avoid any problems between the delays between triggers and sound onset. We connected the cable from the audio jack to pins 7 and 37 of the trigger input to the USB receiver, however we don't see anyt...