Is that zero really a zero?

I read from a USB-6008 using DAQmx. I was reading the device as fast as I could in a loop for, but I got a zero casual in the data. By adding a 1 millisecond in the loop delay, I was able to reduce the amount of zeros being played. My question is, how to query the buffer in the 6008 to say if zero is a real value, or a number returned to the place he has is not a number in the buffer?

It's kind of a funny way to acquire 100 samples. Why don't you try setting the sample note to 1000 s/s, number of samples to 100, DAQmx Read to NSamp and get rid of the loop for? Definition of synchronization with a 1 wait msec is just wishful thinking.

Tags: NI Software

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