Recording medium and method

A method of managing information regarding a signal processing device and an electric apparatus using a terminal device that is connectable with the signal processing device through a communication cable,

• the signal processing device including
• a superposed signal transmission part that transmits an operation signal in accordance with a state of an operation element to a different device or that receives an operation signal for controlling the operation element from the different device and transmits a superposed signal obtained by superposing a data signal indicating prescribed information with the operation signal to the different device, and
• an information storage part that stores the prescribed information,
• the electric apparatus being electrically connected to the signal processing device and operating the operation element by transmitting and receiving the operation signal to and from the signal processing device,
• the method comprising:
• a first identification information acquisition step in which the terminal device acquires, from the signal processing device via the communication cable, first identification information for identifying the signal processing device as the prescribed information;
• a second identification information acquisition step in which the terminal device is electrically connected to the signal processing device and acquires, through an input part of the terminal device operated by a user, second identification information for identifying the electric apparatus;
• a generation step in which the terminal device generates association info illation for associating the first identification information with the second identification information;
• and
• an output step in which the terminal device outputs the association information so that the association information is received by an information processing device that controls or monitors a plurality of the electric apparatuses through the signal processing device.