Apparatus and method for ascertaining sampling points of a signal pulse

A method for determining an arrival time, the method comprising providing a device comprising:

• a comparison means configured such that it compares the time course of a signal pulse (V(t)) with two reference values (V1, V2) and triggers a time analysis means (TDC) of the device when the signal pulse (V(t)) reaches a reference value (V1, V2), wherein the time analysis means (TDC) is configured such that it determines the time between the first and second triggering, and wherein the device is configured such that it determines an arrival time of the signal pulse by means of the determined time and by means of the reference values (V1, V2), and generating via the detector a pulse-shaped electrical signal (V(t)) and the time course of the signal pulse (V(t)) is compared with two reference values (V1, V2) and the time analysis means (TDC) of the device is triggered when the signal pulse (V(t)) reaches a reference value (V1, V2), wherein the time analysis means (TDC) determines the time between the first and the second triggering, and wherein an arrival time (TA) of the signal pulse is determined by means of the determined time and by means of the reference values (V1, V2).