The invention relates to a dual-mode
signal acquiring board, belonging to the technical field of
data acquisition. The acquiring board comprises a power supply module, a
clock module, a power divider module, an ADC module, a
multiplex allocation module, a data preprocessing module, a data caching module, a control interface module and a main control module, and can implement the functions of dual-mode
data acquisition, multiple-triggering
mode control, data caching, data preprocessing and
data transmission, the invention solves the problems that the interchannel synchronization under GSPS dataacquisition velocity, multiple-triggering
mode control, data preprocessing and transmitting, data caching
clock network distribution are not easy to implement, the invention also solves the technicalproblem for implementing the interweave sampling of ADC
chip of two GSPS sampling rates, the invention is suitable for the
data acquisition conditions with high sampling velocity and input bandwidthrequirement being applied to SAR
radar echo signal acquisition,
radar signal spying receiving, frequency storing interference and
software radio and so on.