| 摘要 |
A discriminator (118) includes a set of comparators (120, 2021, 2022, 2023,…,202N), a window width generator (124, 214, 2141, …, 214N), and a set of reference signal genrators (122, 2121, 2122, 2123, …, 212N). In response to the discriminator being in a window based spectrum measurement mode, a first reference signal generator for a first comparator generates a reference signal that is supplied to the first comparator and that is added with the window width with a result of the addition supplied to the second comparator. The first comparator compares a peak height of a pulse indicative of an energy of detected radiation with the supplied reference signal and produces a first output indicating which of the peak height or the reference signal is greater. The second comparator compares the peak height with the supplied result of the addition and produces a second output indicating which of the peak height or the result of the addition is greater. |
