A test system for a LiDAR sensor, having a trigger detector and a signal generator connected to the trigger detector, wherein the signal generator is actuated by the trigger detector in response to the reception of a trigger signal of a LiDAR sensor to be tested in such a way that a signal generating unit of the signal generator outputs a specified, synthetically generated optical signal, in particular a synthetically generated reflection of the trigger signal, wherein the signal generation unit comprises a display surface having a specified number of pixels, and wherein the signal generator is configured to aggregate pixels of the same intensity to form a cluster, characterized in that the signal generator comprises a plurality of printed circuit boards (20a, 20b, 20c) on each of which a plurality of digital-to-analog converters (22a-22n, 24a-n, 26a-n) are disposed, each of the plurality of digital-to-analog converters (22a-22n, 24a-n, 26a-n) being connected to an input of a plurality of crosspoint switches (28a-n, 30a-n, 32a-n), wherein respective outputs of the plurality of crosspoint switches (28a-n, 30a-n, 32a-n) are connected to a luminous element driver (34a-z, 35a, 39a) actuating a luminous element (36a-z, 37a, 41a) of the signal generating unit, in particular a light emitting diode or a laser diode, wherein the quantity of luminous elements (36a-z, 37a, 41a) of each printed circuit board (20a, 20b, 20c) is greater than the quantity of digital-to-analog converters (22a-22n, 24a-n, 26a-n), wherein the crosspoint switches (28a-n, 30a-n, 32an) disposed between the digital-to-analog converters (22a-22n, 24a-n, 26a-n) and the luminous element drivers (34a-z, 35a, 39a) of the luminous elements (36a-z, 37a, 41a) are implemented for providing a dynamically adjustable, coordinate-wise connection between the digital-to-analog converters (22a-22n, 24a-n, 26a-n) and the luminous elements (36a-z, 37a, 41a). wherein the signal generator is actuated by the trigger detector in response to the reception of a trigger signal of a LiDAR sensor to be tested in such a way that a signal generating unit of the signal generator outputs a specified, synthetically generated optical signal, in particular a synthetically generated reflection of the trigger signal, wherein the signal generation unit comprises a display surface having a specified number of pixels, and wherein the signal generator is configured to aggregate pixels of the same intensity to form a cluster, characterized in that the signal generator comprises a plurality of printed circuit boards (20a, 20b, 20c) on each of which a plurality of digital-to-analog converters (22a-22n, 24a-n, 26a-n) are disposed, each of the plurality of digital-to-analog converters (22a-22n, 24a-n, 26a-n) being connected to an input of a plurality of crosspoint switches (28a-n, 30a-n, 32a-n), wherein respective outputs of the plurality of crosspoint switches (28a-n, 30a-n, 32a-n) are connected to a luminous element driver (34a-z, 35a, 39a) actuating a luminous element (36a-z, 37a, 41a) of the signal generating unit, in particular a light emitting diode or a laser diode, wherein the quantity of luminous elements (36a-z, 37a, 41a) of each printed circuit board (20a, 20b, 20c) is greater than the quantity of digital-to-analog converters (22a-22n, 24a-n, 26a-n), wherein the crosspoint switches (28a-n, 30a-n, 32an) disposed between the digital-to-analog converters (22a-22n, 24a-n, 26a-n) and the luminous element drivers (34a-z, 35a, 39a) of the luminous elements (36a-z, 37a, 41a) are implemented for providing a dynamically adjustable, coordinate-wise connection between the digital-to-analog converters (22a-22n, 24a-n, 26a-n) and the luminous elements (36a-z, 37a, 41a).