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数字电路刚出现时,由于传输信号速率很低,在电路分析时采用低频和直流的方法就可以,但随着数字信号频率越来越高,电路的高频特性越来越显现出来,需要借助更精确的手段加以分析评估。信号完整性的测试手段种类繁多,有频域和时域法,还有一些综合性的手段,比如误码率测试,实验室通常会配备示波器和矢量网络分析仪等仪器进行分析测试。罗德与施瓦茨(中国)科技有限公司孙振砾所撰《R&S矢网在信号完整性测试中的应用》一文首先介绍了技术背景及产品,并对矢网的信号完整性测试应用进行了研究和分析。R&S矢量网络分析仪ZNB和ZNBT相比传统的信号完整性测试仪器,同时具备了时域和频域测量功能,基于矢网丰富的误差校准和高动态范围,为信号完整性测试提供了强大和全面的分析功能。
Digital circuit just appeared, due to the transmission signal rate is low, the circuit analysis using low-frequency and DC method can be, but with the increasing frequency of digital signals, the circuit’s high-frequency characteristics more and more obvious, need help More accurate means to analyze and evaluate. There are many kinds of signal integrity test methods, such as frequency and time domain methods, and some comprehensive methods, such as bit error rate testing. The lab usually uses oscilloscopes and vector network analyzers to conduct analysis and testing. A paper by Roger and Schwartz (China) Technology Co., Ltd., Sun Zhen-li, on “The application of R & S vector networks in signal integrity testing” first introduced the technical background and products, and studied the application of vector network signal integrity testing And analysis. Compared with traditional signal integrity testing instruments, both ZNB and ZNBT have both time and frequency domain measurement capabilities. Based on vector-based error-correction and high dynamic range, the ZNB and ZNBT provide robust and robust signal integrity testing Comprehensive analysis capabilities.