This standard describes a high-speed, low-cost serial bus suitable for use as a peripheral bus, a backup to parallel backplane buses, or a local area network. Highlights of the serial bus include the following: a)Bus transactions that include both block and single quadlet reads and writes, as well as an "isochronous" mode that provides a low-overhead guaranteed bandwidth service. b)A fair bus access mechanism that guarantees all nodes equal access. The backplane environment adds a priority… read more mechanism, but one that ensures that nodes using the fair protocol are still guaranteed at least partial access. c)Automatic assignment of node addresses—no need for address switches. d)A physical layer (PHY) supporting both long-haul and short-haul cable media and backplane buses. e)Variable speed data transmission based on ISDN-compatible1 bit rates from 24.576 Mbit/s for transistor-transistor logic (TTL) backplanes to 49.152 Mbit/s for backplane transceiver logic (BTL) backplanes. For the cable medium, data transmission rates of 98.304 Mbit/s (known as S100), S200, S400, S800, S1600, and S3200 are supported. f)A short-haul cable medium that allows up to 16 physical connections (cable hops), each up to 4.5 m, giving a total cable distance of 72 m between any two devices. Bus management recognizes smaller configurations to optimize performance. g)A long-haul cable medium that permits connections up to 100 m in length over unshielded twisted pair (UTP) cable and glass optical fiber (GOF) and up to 50 m over plastic optical fiber (POF). h)Consistency with ISO/IEC 13213:1994 (IEEE Std 1212, 1994 Edition). read less

定价： 464元 / 折扣价： 395 元

This is a full-use standard whose scope is to extend the already defined asynchronous and isochronous services of High Performance Serial Bus beyond the local bus by means of a device, the bridge, which consists of two nodes, each connected to a separate bus and interconnected with each other by implementation-dependent means. The project is intended to standardize the model, definition and behaviors of High Performance Serial Bus bridges, which are devices that may be used to interconnect two… read more separately enumerable buses. This project extends IEEE Std 1394-1995, as amended by IEEE Std 1394a-2000 and IEEE Std 1394b-2002, and is based upon those documents as well as upon IEEE Std 1212-2001, Control and Status Registers (CSR) Architecture for microcomputer buses. NOTE---The set of IEEE 1394 standards specifies the interfaces, functions, and operations necessary to ensure interoperability between conforming implementations. These standards are functional descriptions. An implementation may employ any design whose behavior is compliant with the pertinent standards. read less

定价： 134元 / 折扣价： 114 元

定价： 187元 / 折扣价： 159 元

The scope of this guide is to furnish an understanding of the conditions that generate gases in paper and laminated paper-polypropylene insulated fluid-filled cable systems; to establish a recommended method for sampling, data collection, analysis; and to identify possible remedial actions for systems with high dissolved gas-in-fluid content.

定价： 84元 / 折扣价： 72 元

This guide provides information and recommendations on the equipment, cable specimens, test conditions, test control methodologies, measurements, data analysis and interpretation in performing accelerated aging tests for 5 kV to 46 kV rated electric power cables using water-filled tanks. The accelerated aging tests may be time-to-failure tests and/or tests in which the samples are aged for fixed times followed by diagnostic testing.

定价： 76元 / 折扣价： 65 元

This publication provides a recommended practice for the electrical design of industrial facilities. It is likely to be of greatest value to the power-oriented engineer with limited industrial plant experience. It can also be an aid to all engineers responsible for the electrical design of industrial facilities. However, it is not intended as a replacement for the many excellent engineering texts and handbooks commonly in use, nor is it detailed enough to be a design manual. It should be… read more considered a guide and general reference on electrical design for industrial plants and buildings. Tables, charts, and other information that have been extracted from codes, standards, and otherre technical literature are included in this publication. Their inclusion is for illustrative purposes; where technical accuracy is important, the latest version of the referenced document should be consulted to assure use of complete, up-to-date, and accurate information. read less

定价： 209元 / 折扣价： 178 元

This International Standard gives guidelines for the evaluation and selection of CASE tools, covering a partial or full portion of the software engineering life cycle. It establishes processes and activities to be applied for the evaluation of CASE tools and selecting the most appropriate CASE tools from several candidates. These processes are generic, and organizations must tailor them to meet organizational needs. The CASE tool evaluation and selection processes should be viewed in the larger… read more context of the organization's technology adoption process. This International Standard provides the following: a) guidance on identifying organizational requirements for CASE tools; b) guidance on mapping those requirements to CASE tool characteristics to be evaluated; c) a process for selecting the most appropriate CASE tool from several tools, based on measurements of the defined characteristics. Primary users of this International Standard are organizations that intend to adopt CASE tools to support their software life cycle processes. CASE tool suppliers can also use this International Standard to describe characteristics of their CASE tools. This International Standard is not intended to apply to: a) software engineering frameworks whose purpose is to provide mechanisms for data, control and presentation integration; b) general purpose tools (e.g. word processors, spreadsheets) which can be used in software engineering activities, nor CASE tools of very narrow scope or specific purpose (e.g. a compiler); c) planning for the implementation of CASE tools within an organization (even though it is recognised that this is an important subject). NOTE A user of this International Standard can make the best possible selection of a CASE tool and yet have no guarantee of a successful implementation. ISO/IEC TR 14471 Adoption of CASE Tools addresses this subject. This International Standard contains a set of processes, activities, and tasks designed to be tailored. The tailoring process is the selection of applicable processes, activities and tasks. Compliance with this International Standard is defined as the performance of the processes, activities, and tasks selected from this International Standard for the evaluation and selection project. Any organization imposing this International Standard as a condition of trade is responsible for specifying the minimum set of required processes, activities, and tasks which constitute compliance for a given application of this International Standard. read less

定价： 208元 / 折扣价： 177 元

This standard provides the framework for performing and reporting reliability predictions. It applies to hardware products including electronic, electrical, and mechanical devices and assemblies.

定价： 89元 / 折扣价： 76 元

This guide provides maintenance testing and failure analysis guidance for form-wound, squirrel cage, induction machinery rated up to 15 kV. The guide addresses the following machine systems: — Stator (winding and wore) — Rotor (winding and core) — Vibration and noise — Bearings and shafts — Structure, frame — Ventilation — Accessories

定价： 110元 / 折扣价： 94 元

This document describes the Basic Interoperability Data Model (BIDM) standard as developed by the Reuse Library Interoperability Group (RIG).

定价： 235元 / 折扣价： 200 元

To prepare a guide for the evaluation of the remaining life of impregnated paper insulated transmission cable systems.

定价： 123元 / 折扣价： 105 元

This guide, covering three-phase ac systems from 1 kV to 800 kV, provides recommended electrical operating, safety clearances, and insulation levels in air-insulated electric supply substations; addresses insulation coordination procedures; provides design procedures for the selection and coordination of the insulation levels within the station as they relate to substation clearances; and addresses how reduced clearances in highvoltage ac substations will allow for compact bus arrangements and… read more substation voltage uprating applications. This guide addresses insulation coordination procedures, including the choice of insulation levels and arrester specification, in limited detail and only as relevant to clearance requirements. Detailed and expanded coverage of insulation coordination procedures is provided in other ANSI and IEEE guides and standards (see Clause 2). This guide focuses on open-air bus assemblies and configurations and excludes apparatus clearances (i.e., bushing clearances for transformers, and breakers). Detailed coverage of apparatus clearances is provided in other applicable guides and standards. read less

定价： 75元 / 折扣价： 64 元

Fiber Optic Cable intended to operate in electrical power generating stations and in other industrial facilities.

定价： 82元 / 折扣价： 70 元

The scope of the guide will be the system-level concepts which form the context for a network of interoperating reuse libraries, including the identification of properties required of standards, policies and technology required for the context. It does not address the structure or organization of governing bodies, and identification of particular standards or detailed policies.

定价： 135元 / 折扣价： 115 元

Specification and test requirements for a single-axis Coriolis vibratory gyro (CVG) for use as a sensor in attitude control systems, angular displacement measuring systems, and angular rate measuring systems are defined. A standard specification format guide for the preparation of a single-axis CVG is provided. A compilation of recommended procedures for testing a CVG, derived from those presently used in the industry, is also provided. Informative annexes cover CVG design features and theoretical principles of operation.

定价： 110元 / 折扣价： 94 元