Synchronize aquire data from AI and action DO

[菊花烧饼]

sorry for miss many masegge :

[菊花烧饼]

 bulid a test station with two unit been tested synchronization, but I find sometimes it will run a error as attached file.

I found that if I lock some test item with daqmx action and make sure AI and DO work asynchronism , it work well.

I think AI and DO action have no conflict,but now  I am failed.

by the way , I uesed DAQ 6221.

BR

Sonic