IEEE-1394b《军用和航空航天车辆应用的接口要求》规定了IEEE Std 1394的使用要求™-2008年，作为军用和航空航天车辆的数据总线网络。IEEE标准1394部分™-AS5643使用的2008标准称为IEEE-1394 Beta（以前称为IEEE-1394b）它定义了网络上的操作和信息流的概念。如1.4所述，本规范包含对“现成”IEEE-1394标准的扩展/限制，并假设读者已经具备IEEE-1394的工作知识。本文件被称为“基本”规范，包含规定数据总线特性、数据格式和节点操作的通用要求。需要注意的是，本规范并非独立设计；一些要求将细节留给实现，并将实际实现委托给网络架构师/集成商为特定车辆应用指定。 此信息通常包含在符合此基本规范的“网络配置文件”斜线表中。以类似的方式，总线介质的电气特性以及连接器信息包含在“物理层”斜线表中，该斜线表也可能是特定车辆应用所特有的。总之，全面理解本规范需要具备IEEE标准1394的知识™-2008标准和访问物理层斜线表、斜线表和目标应用程序手册。

IEEE-1394b, Interface Requirements for Military and Aerospace Vehicle Applications, establishes the requirements for the use of IEEE Std 1394™-2008 as a data bus network in military and aerospace vehicles. The portion of IEEE Std 1394™-2008 standard used by AS5643 is referred to as IEEE-1394 Beta (formerly referred to as IEEE-1394b.) It defines the concept of operations and information flow on the network. As discussed in 1.4, this specification contains extensions/restrictions to "off-the-shelf" IEEE-1394 standards and assumes the reader already has a working knowledge of IEEE-1394.This document is referred to as the "base" specification, containing the generic requirements that specify data bus characteristics, data formats, and node operation. It is important to note that this specification is not designed to be stand-alone; several requirements leave the details to the implementations and delegate the actual implementation to be specified by the network architect/integrator for a particular vehicle application. This information is typically contained in a "network profile" slash sheet that is compliant with this base specification. In a similar manner, the electrical characteristics of the bus media, as well as connector information, is contained in a "physical layer" slash sheet that also may be unique to a particular vehicle application.In summary, full understanding of this specification requires knowledge of IEEE Std 1394™-2008 standards and access to the physical layer slash sheets, slash sheets, and handbook for the target application.