What happens when the aspect ratio is changed?

• It changes the aspect (width to height) ratio of the incoming signal.
  
  Note:
  • You cannot change the aspect ratio when displaying from a computer using the USB TypeB port or from a USB device using the USB source.
  • If you are using the interactive pens, you will have to recalibrate if you change any of these settings: Keystone, Zoom, Auto Setup, Resolution, Tracking, Sync, Position, or Aspect.