"高速电子连接器线缆特性测试标准及要求"

The EIA Standard TP-108 outlines the test procedures for measuring the impedance, reflection coefficient, return loss, and voltage standing wave ratio (VSWR) of high-speed electronic connector cables. These measurements are crucial for ensuring the proper functioning and reliability of electrical connectors, cable assemblies, and interconnections. Impedance refers to the resistance of the cable to the flow of electrical signals. Different connectors and cables have different impedance values, and it is important to ensure that they match to prevent signal degradation. The reflection coefficient measures the reflection of signals at the interface between connectors and cables, which can cause signal distortion. Return loss, on the other hand, quantifies the amount of signal that is reflected back to the source due to impedance mismatches. The VSWR is a measure of how efficiently the electrical signals are transmitted through the cable without reflections. High VSWR values indicate poor signal transmission and can lead to signal loss. Therefore, it is essential to measure and monitor these parameters to ensure the proper functioning of high-speed electronic systems. The EIA-364-108 standard provides guidelines for conducting these tests in both the time and frequency domains. The standard was approved in July 2000 and reaffirmed in March 2007, ensuring that it remains relevant and up-to-date with the latest technological advancements. By following the EIA-364-108 standard, manufacturers can ensure that their electronic components and assemblies meet the required impedance, reflection coefficient, return loss, and VSWR specifications. This ensures that the systems perform optimally and reliably in high-speed electronic applications. In conclusion, the EIA Standard TP-108 is a crucial tool for maintaining the quality and performance of high-speed electronic connector cables.