The application discloses a
signal generation board, a
consistency test system and a method. The
signal generation board comprises a communication connection interface, a control processor, a
signal generation device, a
signal processing device and a differential signal output interface. The control processor responds to a test signal output instruction output by a digital
oscilloscope through the communication connection interface, and outputs a signal generation instruction and a
gain control instruction. The signal generation device generates and outputs an LFPS original signal based on the signal generation instruction. The
signal processing device amplifies or reduces the amplitude of the LFPS original signal based on the
gain control instruction to obtain an LFPS signal used for
USB interface
consistency test. The differential signal output interface is used for outputting the LFPS signal in a differential signal transmission mode. Since the signal generation board is used to replace an AFG
signal generator or a
bit error rate instrument in the
consistency test system to generate the LFPS signal with controllable parameters, the cost of the consistency test
system can be reduced, and the operation complexity of the consistency test can be reduced.