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一、电气特性及传输性能要求 1.阻抗特性 用户侧二线音频口Z处阻抗特性以回输损耗(RL)表示。 Z接口点,针对图1的阻抗测试网络或三元件阻抗(200Ω+560Ω//0.1μF),回输损耗应满足图2要求。
First, the electrical characteristics and transmission performance requirements 1. Impedance characteristics User-side second-line audio port Z impedance characteristics of the return loss (RL) said. Z interface points for the impedance test network of Figure 1 or three element impedance (200Ω + 560Ω // 0.1μF), return loss should meet the requirements of Figure 2.