GB/T 16503-1996 in English

《GB/T 16503-1996信息技术 平衡互换电路的电隔离》由TC28（全国信息技术标准化技术委员会）归口，TC28SC6（全国信息技术标准化技术委员会数据通信分会）执行，主管部门为国家标准化管理委员会。
本标准规定了利用光耦合器集成电路技术的平衡互换电路的电隔离，并提供了两态码的数据传输。

Scope

This standard specifies the galvanic isolation of balanced commutation circuits using optocoupler integrated circuit technology and provides for data transmission of binary codes (eg RNZ). The electrical performance is compatible with GB/T 15127 and GB 7619. Note: The meaning of compatible is to allow interoperability between those interchangeable circuit devices that have the same electrical performance as specified in the referenced standard. Appendix A points out the interoperability with GB 7619 interchangeable circuits in a point-to-point environment. This standard is given in terms of isolated generator, isolated receiver parameters and methods of measurement. These components can be used on two-wire or four-wire twin-neutral pairs for point-to-point connections up to 1000m or multi-point connections up to 500m, with point-to-point connections up to 2Mbit/s and multipoint connections up to 1Mbit/s. Manufacturers can optimize their device designs for data signaling rates up to 20kbit/s. Several options are available to meet specific application requirements, such as: - isolated generator high impedance control; - isolated receiver circuit fault detection capability; - line termination in point-to-point configuration. This standard does not describe a complete device interface specification in terms of mechanical, electrical and functional/procedural.