Thanks lots to Chris and RamziH,
I have tested DAQCard-AI-16XE-50 on Max, it works fine all analog channels, the device nubmer is 1. So, in my program I am using this device number, checking the sample rate no more than 20kHz and no analog output function in my program, but it still doesn't works. Does CWAI works with DAQCard-AI-16XE-50? The DAQ driver version is 6.9.2.
Thanks again.