An apparatus for enabling display of composite audio and video signals on a television set with a coaxial input connector is disclosed. At the start of a print job, the media type and print format are determined. Thus, hydrogen flowing toward the catalyst particles interspersed inside the carbon nanotubes are able to go through, while the flow of trace amounts of carbon monoxide contained in the hydrogen is blocked, preventing the poisoning of the catalyst particles by the carbon monoxide. In one implementation, the predicted performance is based on one or more derivatives of the performance data.