The I/O system is an advanced wired telemetry multi-channel seismic data acquisition system launched by the United States INPUT/OUTPUT company (hereinafter referred to as I/O company) in 1988. It uses some of the patented technologies of the I/O company, such as spectrum Shaping SSF (Spectral Shaping Filter) and HPE (Hiline Pickup Eliminator). The system adopts a modular design and flexibly utilizes lighter twisted-wire telemetry cables. Up to 512 lines and 8064 channels of seismic data are recorded in real time. Suitable High resolution, high signal-to-noise ratio, high-precision seismic exploration in the field.