This invention relates to a broad band spread spectrum communications receiver with carrier recovery and tracking based on multiple phase shift keying techniques. These measurements define first correction information allowing the apparatus to apply a pattern at one or more desired locations on the substrate. The backside dummy plug can include a cavity to accommodate volume changes in other components in the substrate, thereby alleviating mechanical stress in the substrate during thermal cycling and operation of the semiconductor chip. A consumer of the nutritional substance can use this reference to retrieve the information regarding the creation of the particular nutritional substance. The image distance is monitored.