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Help with using external trigger with MCCDAQ USB-1608FS-Plus



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The external trigger input is pin 37 (TRIG_IN). If you, instead, want to trigger on D0 pin 21, you will need to continuously read the digital IO and determine when that pin meets your requirements to start collecting data. Polling the digital IO port tends to be slow. If you have a free analog input, you could use it for your trigger. Then start AInScan to read the data and continuously monitors that one channel to determine if the trigger has occurred.

Best regards,

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