I write A wave signal and its anti-signal to FPGA (7851R), there is phase shift in out put

[sfzheng]

The PC system is Windows 7.I use Labview-2012 to write this program.

I'm a beginner to study Labview. I'll be grateful if anyone could help me on this problem which nagged me for 3 days. Thanks！

[GerdW]

Hi sfzheng,

so you write to some controls on the RT side of your project.

And the FPGA reads from those controls and writes their values into the AO node.

Why do you expect "in phase" writing controls on RT side to reading controls on FPGA side?

You might think about using a FIFO to send data from RT to FPGA and have the FPGA handle the data on its own!?