A method for continuously evaluating an X-ray unit. The method includes placing an X-ray sensor converter having a photo diode and a scintillation crystal in a path of an X-ray beam emitted by the X-ray unit, using the X-ray sensor converter to convert an X-ray beam energy into an electric signal, providing an amplifier connected to the X-ray sensor converter, conveying the electric signal from the X-ray sensor converter to the amplifier, amplifying the electric signal with the amplifier, and measuring a spectrum of the X-ray tube energy by continuously sampling and quantifying the amplified electric signal.
