How can I creat a ture format data txt for iio osc's dac manager?

This is pretty straightforward. Simply create a matrix where each column applies to the different channels you want to provide data to and save that matrix to a .MAT file. You can see examples here: iio-oscilloscope/waveforms at master · analogdevicesinc/iio-oscilloscope (github.com)

-Travis

Thank you for your reply. I tried it but I found the new problems.I wanted ad9136 outputs IQ singles.So I organized the data format according to this image.However,I founed output0 has the signel and output1 has a sin wave with 40M frequency. So ,what can I do so that ad9136 can output IQ signel successfully.Please help me, I would appreciate it.

libiio has no concept of a complex channel, they would just be component channels. So voltage0 (column 1) would be for I and voltage1 (column 2) would be for Q.

-Travis

Thank you for your reply.You mean that there is no fault with my data format.And only if I creat the data with the format of picture 1 and tick voltage0 and voltage 1 can I get the iq signals?

Either format is valid and the same ideas apply. Separate columns for the component channels.

-Travis

I am appreciate for your help and I have gotten the result I wanted successfully.Thanks again for you and have a nice life.