A method, apparatus, and computer instructions for processing instructions. Initially, a carrier input associated with one of the first and second air interface technologies is received. In addition, when damage extends through the thickness of a laminated composite, a plug may be used to allow plies to be replaced while maintaining contour within the repair region. A sampling terminal is disposed at an end of the sampling cable for electrically connecting the sampling cable with each of the connection pieces. An additional source of light that can be controllably switched on and off between a first light intensity and a second light intensity which is greater than the first one uniformly illuminates the infrared detector for deriving correction values for correcting the signals from each of the photoconductors during a measurement.