Abstract: Apparatus for analysis of a sample includes a radiation source, which is adapted to direct a first, converging beam of X-rays toward a surface of the sample and to direct a second, collimated beam of the X-rays toward the surface of the sample. A motion assembly moves the radiation source between a first source position, in which the X-rays are directed toward the surface of the sample at a grazing angle, and a second source position, in which the X-rays are directed toward the surface in a vicinity of a Bragg angle of the sample. A detector assembly senses the X-rays scattered from the sample as a function of angle while the radiation source is in either of the first and second source configurations and in either of the first and second source positions. A signal processor receives and processes output signals from the detector assembly so as to determine a characteristic of the sample.

Abstract: In a terminal control unit, such as a display device (2), a control program is stored in a memory device which can electrically rewrite its data, such as a flash ROM (2b). The terminal control unit has a card connector (2d) provided therefor, and upon insertion of a memory card storing a control program for updating, into the card connector (2d), the control program for updating is transcribed from the memory card into the memory device, whereby updating of the program is performed. Further, when the updating operation is started, a main control unit (1) is notified of start of the updating operation, and therefore the main control unit (1) is prevented from executing a communication abnormality determining process even if it does not receive a response from the terminal control unit.