I'm using an analog input on a PCI-6224 and having trouble with the clock source. I'm trying to take samples from 16 different analog inputs very quickly. I have the sample mode set to: Hardware Timed Single Point. The rate i'm running at is the max (250kHz(15625Hz per channel)). I left the clock source at the default and I'm just trying to sample repeatedly. The analog input works for a short while (2-3 seconds) and then just stops. Am I doing something wrong or is there something that I'm missing? Any advice would be great.
Yes, you're doing something wrong. Sample clock needs to be set to Continuous. See the attached screenshot for the main continuous acquisition example in LabVIEW.
Yeah, I tried that but I was getting some severe latency. The analog input would output changes in the voltage 1-3 seconds after the voltage actually changed. When I changed the sampling mode, the latency was gone.
That's how you clock in samples using the internal sample clock. If you see a delay then something else is amiss with how you're plotting/viewing the data.
Hardware-timed single point is for PID control with a real-time OS.
