My purpose is to use the same node to generate square waves of different frequencies. This square wave has 13 cycles.
I used the Flat sequence structure to create 5 frames. The first frame used an external trigger signal. The second frame had a built-in square wave generator in LABVIEW to generate a 10MHz signal for use by the FPGA I/O node. The third frame was The FPGA I/O node is shut down. In the fourth frame, there is another square wave generator built into LABVIEW, which generates a 20MHz signal for use by the FPGA I/O node. The fifth frame also shuts down the FPGA I/O node.
I found that if the square wave generator frequencies of the second frame and the fourth frame are different, the signal will jitter left and right.
What should I do?
