This paper gives a brief description of the bandwidth characteristic and sampling rate of digital oscilloscope, and analyses their impact on waveform test in practical application.

Realizing real-time programmable of signal source by real-time downloading waveform data from the computer that connected test bench by USB bus.

The test vectors generation and verification in ASIC design are introduced, including stimulus writing guidelines, waveform audit, vectors strobe and simulation used for test vectors.