i think there are is a optional called group by ( channel or scale) with you configure the read function. see below
DAQmxErrChk(DAQmxReadAnalogF64 (gDaqTaskPtr->gTaskA8_PXI6071E, DAQmx_Val_Auto, 2.0, DAQmx_Val_GroupByChannel, DataBuf,NumOfPoints*NumOfChans, &actMasterSmpl, 0));
hope can help!
Gerry
您好!我现在采用PCI-6251进行单通道采集,但是在DAQmx的read.vi中设置单通道采集的话采集不到波形,只能在该函数中选择多通道N采集,但是我只接了一个输入通道,在labview中的示波器上却显示了两中波形(滤波后),应该是一种波形的,请问这是什么原因呢!谢谢!!