Apparatus and instruments and transmitting sets for testing optoelectronic systems, for optical and electro-optical tests, for electronic measuring, for controlling and testing in the aeronautical, space, industrial and transport fields, for controlling, measuring and testing optical signals, for bench testing avionic, electric and electric equipment, for testing vehicles and apparatus for location by land, air and sea, and for detection and sensing, namely photodiodes including solar cells, phototransistors, photomultipliers, integrated optical circuit elements in the nature of optical circuit boards, photoresistors, photoconductive camera tubes, charge-coupled imaging devices, injection laser diodes, quantum cascade lasers, light-emitting diodes (LEDS), photoemissive camera tubes, optocouplers, and optical fiber communications devices in the nature of communication hubs using optical fibers; optical signal generators whether or not they use lasers, namely televisions; computer software in the nature of computer operating system software; computer hardware, namely computers, microprocessors, computer peripheral devices namely printers; computer software for establishing test reports; computer hardware in the nature of computers, microprocessors and modems for connecting test installations via means of telecommunication and/or the Internet and/or local area networks; cables, electric