产品类别 : 光缆和电缆电线·通讯电缆
应用范围 Application 本产品参照西门子V 42251-Z1001-A1 技术规范而设计制造，主要用于数字传输设备及采用类似技术的电子设备之间的信号联接和控制。 The series is designed and made according to the technologic requirement of V42251-Z1001-A1 of SIEMENS.It is applied for connecting and controlling signal between the transmission equipments. 结构及性能指标 Structures & performances | 2C-2F | 2C-3F | 内导体 Inner conductor | 材料 Material | 镀银铜线 Silver plating copper wire | 根数 Number×单线直径dia. | 1×0.45 | 1×0.60 | 绝缘 Insulation | 材料 Material | 发泡聚乙烯 Foamed PE | 直径 Dia. mm | 1.90 | 2.70 | 外导体 Outer | 结构 Structural | 复合铝箔纵包+镀锡铜线编织 | 直径 Dia. mm | 2.60 | 3.30 | 护套外径 Dia. mm | 3.4 | 4.5 | 绝缘电阻 Insulating resistance MΩ. Km | ≥10000 | ≥10000 | 额定特性阻抗 Nominal impedance Ω | 75 | 75 | 电容 Capacitance pF/m | 59 | 59 | 传输速率 Relative velocity | 85% | 85% | 衰减常数（20℃） Attenuation（20℃） ≤dB/100m | 1MHz | ≤1.8 | ≤1.4 | 3 MHz | ≤3.0 | ≤2.4 | 10 MHz | ≤5.3 | ≤4.3 | 30 MHz | ≤9.5 | ≤7.4 | 100 MHz | ≤18.5 | ≤13.6 | 200 MHz | ≤27.5 | ≤19.2 | 回波损耗 Echo loss (30～1000MHz) dB | ≥22(独立峰值≥18) | 屏蔽衰减 Screen attenuation dB | ≥75 | ≥75 | 工作电压 Working voltage V | ≤300 | ≤300 | 测试电压 Testing voltage V, 1min | 800 | 800 |
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注：可按双方协议的长度及包装形式交货。 Note:According to mutual agreement,any delivery length and package form is allowable. | 
