DIADOS is an all-round acceptance test device for measuring dose values and exposure time of different X-ray equipment using various accessories. The measurements of radiographic, fluoroscopic, mammographic and dental X-ray equipment are based on solid state detectors. The CT measurement is based on a CT ion chamber connected to a separate high voltage supply. The calibration factors of the detectors are selectable for different X-ray filtration. The autostart feature for the dose, dose per pulse and exposure time measurement starts as soon as the DIADOS detects radiation. The measuring ranges in general feature wide dynamics.