In the paper, we propose the AD board architecture for PC-based software DVB-T receiver. It includes a tuner board, AD board and commercial PCI acquisition board. And it can satisfy our research requirement of software receiver. After our experiment, the AD board architecture can successful record DVB-T signal on the static channel. We set the optimal IF AGC value and reference value of ADC to match the 8 bits resolution dynamic range. And then, the sampling accuracy is very well.