MIL-STD-188 -212

Abstract

The purpose of this document is to establish technical standards and design objectives that are necessary to ensure interoperability and to promote commonality for communications equipment and subsystems used in TADIL B. Also, this document establishes acceptable overall subsystem performance and maximum flexibility of subsystem layout in order to satisfy diverse user requirements without the restrictions caused by interface and incompatibility problems. <br>This document is applicable to the design and development of new equipment, assemblages and subsystems used in TADIL B. This document is applicable also to the engineering and installation of existing TADIL B facilities. It is not intended that existing TADIL B facilities be immediately converted to comply with the standards contained in this document. New TADIL B facilities and those undergoing major modification or rehabilitation shall comply with the standards contained in this document subject to the applicable requirements of current procurement regulations. <br>The main objectives of this document are to ensure interoperation of equipment and subsystems consistent with military requirements, to provide a degree of subsystem performance acceptable to the majority of TADIL B users, and to achieve the necessary degree of performance and interoperation in the most economical way. This document provides for: <br>a. Standardizing user-to-user performance characteristics. <br>b. Standardizing the type of signals at various interface points in a TADIL B subsystem. <br>c. Specifying maximum permissible degradation of a signal in the process of transmission, and allocating the permissible degradation among various parts of a subsystem. <br>d. Establishing performance parameters and operating features of equipment, not of detail design, but of other factors which govern the interface characteristics with subsystems and systems in which the TADIL B equipment will be used. <br>e. Defining performance parameters without specifying the technology that should be used to obtain the required performance. <br>An additional objective of this document is to prevent proliferation of equipment serving the same or similar function. The variety of equipment shall be the minimum necessary to effectively support the missions of the tactical forces in accordance with Department of Defense Directive (DoDD) 4630.5. <br>The parameters and other requirements specified in this document are mandatory system standards (see page ii) if the word "shall" is used in connection with the parameter value or requirement under consideration. Nonmandatory design objectives are indicated by parentheses after a standardized parameter value or by the word "should" in connection with the parameter value or requirement under consideration. For a definition of the terms "System Standard" and "Design Objective" see Federal Standard (FED-STD) 1037.