To better capture your signal, you can set the horizontal mode to manual and change the sample rate, scale, and record length to get a clear image of your whole signal. I have attached an image showing an example of a setup that might work for you. As you can see in the Horizontal badge, this setup gives you 6s on the screen. I also have set the trigger point all the way to the left side so that you will only see the response data. Let me know if you have any questions about this setup.