Implementation and Calibration of High Resolution Eye Diagram

Most of the blackouts and brownouts occur due to the slow response time of devices over the grid[1]. This makes high bandwidth network widely used in smart grids. Eye diagram is commonly used to evaluate the communication ability. But right now, eye diagram drawn and bit error rate measurement still depends on traditional separated instrument, including oscilloscope and BERT. Not only is this way costly, but also the line speed and amplitude resolution can't meet the increasing demand, especially, when the PAM4 has been widely used. In this paper, a tiny portable block integrating pattern generation and sampling based on delay line has been proposed. It's adaptable for both low and high data line speed from 1Mbps to 32Gbps to meet different test condition. Besides, it achieves 16-bit voltage resolution with high output swing. A self calibration way has been proposed to make sure the accuracy and reliability of eye diagram and BER measurement.