Discontinuity in Signals Acquired from USB Multifunction I/O Device

Updated Nov 21, 2017

Reported In

Hardware

  • USB-6343

Issue Details

Since the FIFO buffer on my multifunction I/O device can only hold a set number of samples, will there be any discontinuity in acquiring data? I want to correlate the signal to another system.

Solution

If you read the data faster in the application before the FIFO buffer can fill up in ,the signal should be continuous.

However if the buffer is filled up, you will get an overflow indicating no more room for data in the FIFO. This could cause discontinuity  the signal.

Additional Information

The FIFO has a circular system and is filled and emptied based on the sample rate and bus transfer speeds. 
 

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