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Explanation of waterproof TYPE-C physical layer test method
- 2020-09-30-

Explanation of waterproof TYPE-C physical layer test method

due toWaterproof TYPE-CThe rise time of the digital signal is extremely demanding, and the volume of the high-density reversible connector is small, so for the engineering designer, designing the C-type USB interface is a challenging task. When designing the physical layer of the interface, the design engineer will increase the probability of interoperability accidents. Only by fully debugging with measurement and simulation, can the performance control interconnection characteristics and manufacturing tolerances be verified, and the above-mentioned problems of waterproof TYPE-C can be avoided.


The physical layer test method is a commonly used analog measurement debugging method for waterproof TYPE-C, and the specific operation is to use linear passive interconnection. Linear passive interconnects are usually calibrated using two types of stimulus and response test equipment: in the time domain, using a time domain reflector; in the frequency domain, using a vector network analyzer. Regardless of whether the host is collecting time domain data or frequency domain data, the data settings of one domain will be transferred to the other domain data through a simple algorithm. After using simple algorithms and professional software, design engineers can more easily complete the waterproof TYPE-C microwave signal integrity test. Common professional software includes: Keysight's physical layer test system, PLTS software and 20-port PXI frame VNA .

After correctly analyzing the waterproof TYPE-C through the above methods, a lot of metadata sets can be obtained, and a deeper understanding of high-speed digital channels can be obtained. Design engineers fully understand and verify differential insertion loss, differential return loss, impedance distribution, eye diagram, near-end and far-end crosstalk,After mode conversion and channel optimization with pre-weighting and equalization, the ability to control the physical layer of the interface can be improved, therebyreduceThe probability of unexpected interoperability during waterproof TYPE-C design improves the quality of interface products.