A High-Speed Serial Digital Interface Video Signal Jitter Measurement Method

This paper designs a measurement method for high-speed serial digital interface video signal jitter. Firstly, we introduce the features of SDI signal and the jitter measurement methods of traditional high-speed serial signals. A jitter model is built for the SDI signal while the properties of the components are analysed. An adjusted dual-Dirac model is adopted to measure the jitter in the signal. This method can accurately analyse different jitter components in SDI signals. It is directly performed on oscilloscope, which is beneficial to the traceability of the jitter. The feasibility of the method is verified by experiments. The measurement results show that the method has better measurement accuracy than the direct spectrum method.