I'm doing synchronized AI/AO/DO with my PCI-6259 DAQ card. I used the AI sample clock as the clock source. The code works at the moment. But can I add a control for each task, so that I can switch off/on each task individually? I may can use the counter as the sample clock, it seems not enough. Is there any way to do that? Btw, I don't want to use a big case structure and create "AI/AO", "AI/DO", "AO/DO" seperately. Thank you for any suggestion.