You are using third-party hardware to do your DAQ. The Analog Discovery 2 is an "Oscilloscope" chip that appears to work with supplied software to allow you to use this chip as the "logic" of an Oscilloscope. It also provides some signal processing functions (such as FFTs and other features of modern Oscilloscopes).
Do you know if LabVIEW-compatible DAQmx drivers are available for this device? When acquiring large amounts of continuous Analog data, the typical DAQmx way to do this is to use the DAQ hardware to acquire, say, 1000 points in a "continuous acquisition" mode. This means that the DAQmx Task, when started, begins the conversion. For simplicity, let's assume you specified a sampling rate of 1kHz, and you tell the DAQmx Read function to read 1000 points. It will wait (for 1 second = 1000 points * 1kHz) until it has all the points have been sent to the PC, then will both start the next Conversion and let the Read function exit so you can process those points. This is typically inside a While loop to allow points to be taken for as long as the User desires (you need to do something with the data, of course).
See if your device contains LabVIEW DAQmx drivers. If it does, we may be able to help you to acquire more data using LabVIEW.
Bob Schor
