What specifically is your question? Have you already tried writing any code to do this?
You will probably find it helpful to start by running the FPGA VI in simulation. In the project, right-click the FPGA target, and choose Select Execution Mode -> Simulation (the name may be slightly different depending on your version of LabVIEW). While you won't be able to check precise timing this way, you can at least put a chart on the front panel so you can see if your code properly generates the three pulses, then waits.
Try writing some code. If you cannot get it working, post the code that you've tried, along with a specific question and a detailed explanation of how it isn't working.
