US Patent 9546927 Optical pulse tester

An optical pulse tester includes: an OTDR measurer configured to execute an OTDR function of measuring a time distribution of a power of return light of an optical pulse input to an optical fiber; a display configured to display an OTDR measurement screen indicating information on execution of the OTDR function; and a controller configured to control the OTDR measurer and the display. The controller displays, on the OTDR measurement screen, a menu for allowing an operating person to call an auxiliary function for measurement of the optical fiber, and displays, on the OTDR measurement screen, a sub-screen indicating information on execution of the auxiliary function called by the operating person.