Multi-channel high-speed signal acquisition system

The utility model relates to the field of high-speed signal acquisition, in particular to a multichannel high-speed signal acquisition system. Comprising a power supply module, an FPGA module and a high-speed acquisition FMC daughter card module used for acquiring 2N paths of external input signals, under the condition that existing hardware is not changed, a phase calibration module comprising a calibration source, a power divider and 2N single-pole double-throw switches is arranged to be connected with a high-speed acquisition module, and when phase calibration is carried out, the phase calibration module is connected with the calibration source to input multiple paths of calibration signals; calculating and storing the phase difference of the plurality of calibration signals relative to the first calibration signal according to the zero crossing point positions of the plurality of calibration signals; when the external input signals are collected, the multiple paths of external input signals are delayed ac