标准摘要
[中文适用范围]： IEC 60728 的这一部分规定了混合光纤同轴电缆 (HFC) 室外 (OSP) 电源 (PS) 的要求。该标准是为支持不断发展的 HFC 有线网络的可互操作管理系统的设计和实施而开发的系列标准的一部分。该标准的目的是支持针对不断发展的 HFC 有线网络的可互操作管理系统的设计和实施。电源到应答器接口总线 (PSTIB) 规范描述了物理 (PHY) 接口以及在数据链路层 (DLL)@ 7 层 ISO-OSI 参考模型@ 中的第 1 层和第 2 层分别实现的相关消息传递和协议，支持兼容的应答器和受管理的 OSP 电源以及它们所连接的其他相关电源设备之间的通信。该标准描述了应实施的 PSTIB PHY 和 DLL 层要求和协议，以支持 HFC 设备上所有类型 2 和类型 3 兼容的 OSP 应答器与托管 OSP 电源和相关硬件之间的可靠通信。如有必要，将特别注明任何不符合本标准的例外情况。 [外文原描述]： IEC 60728-7-3:2009 specifies requirements for the Hybrid Fibre Coax (HFC) Outside Plant (OSP) Power Supplies (PS). This standard is part of a series developed to support the design and implementation of interoperable management systems for evolving HFC cable networks. The purpose of the standards is to support the design and implementation of interoperable management systems for evolving HFC cable networks. The Power Supply to Transponder Interface Bus (PSTIB) specification describes the physical (PHY) interface and related messaging and protocols implemented at the Data Link Layer (DLL), layers 1 and 2 respectively in the 7-layer ISO-OSI reference model, that support communications between compliant transponders and the managed OSP power supplies and other related power equipment to which they interface. It constitutes a technical revision and includes the following significant technical changes with respect to the previous edition: All changes from standard ANSI/SCTE 25-3 v1.0 to standard ANSI/SCTE 25-3 v1.1 (2005) have been taken into account in this second edition. Clause 7 is based on standard ANSI/SCTE 110 (2005). Addition of informative Annex A concerning hybrid management sub-layer.
英文名称Cable networks for television signals, sound signals and interactive services - Part 7-3: Hybrid fibre coax outside plant status monitoring - Power supply to transponder interface bus (PSTIB)