Pressing the green Quick keypad button will send a snapshot of the screen directly to a USB stick plugged into the front of the scope.
The Quick key provide multiple functions so it will need to be set to Print. To do this press the Utility keypad button then More and then Quick settings on the side of the display. Now press Operation on the side of the display and set Operation to Save Image.
Now when the Quick keypad key is pressed an image will be saved to the USB stick.