To Set Up a Utility Mask

  1. Press MASK > Utility Bus Mask.
  2. Use the Utility Bus 1 Xpt knob, or select the source on the utility bus that you want to use to mask out the key.
  3. Press Force to toggle it to On to force the masked area of the image on screen.
  4. Press Invert to toggle it to On to reverse the mask. The portion of the image that was masked out is now visible, and the portion that was visible is masked.