共找到 150 条与 synchronization clock source 相关的标准，共 10 页
Grapbical symbols Electric docks, time recorders
This amendment to IEEE Std 802.1AS?-2025 specifies protocols, processes, procedures, functions, mechanisms, and managed objects to enable fault-tolerant timing by increasing the availability of the time and adding time integrity. This is achieved using two or more generalized precision time protocol (gPTP) domains, multiple time distribution paths, the local oscillator clock, and a time selection ...
IEEE Standard for Local and Metropolitan Area Networks -Timing and Synchronization for Time-Sensitive Applications - Amendment 1: Fault-Tolerant Timing with Time Integrity
本文介绍了一种针对多相系统的视在功率（VA）测量新方法，称为“源视在功率”（Source VA）。该方法旨在提供对多相系统源（供电基础设施） sizing 需求的一致物理解释，无论系统是星形（wye）还是三角形（delta）连接，负载是平衡还是不平衡，以及是否存在谐波。本文概述了该Source VA方法，并指出与现有的多相VA计量方法相比，Source VA能始终准确反映源 sizing 需求。本文还引用了ANSI C12.24 TR-2022报告，该报告详细说明了各种服务配置（如4线Y型、3线和4线三角型、3线Y型、3线网络型和4线Scott-T型）的相关服务要求及计算定义。
Source VA—Infrastructure Sizing for Polyphase Systems
本指南旨在为商业地源热泵系统（GSHP）提供调试、预防性维护和故障排除的指导。地源热泵系统（也称为地热或地热交换热泵系统）在商业建筑领域越来越受欢迎。现有的ASHRAE设计手册在系统设计方面取得了很大进展，但未能充分涵盖项目实施阶段所需的技术信息，如调试、预防性维护和系统故障排除的特殊要求。随着更多系统投入使用，运营建筑中出现了分散的问题。ASHRAE技术委员会TC 6.8致力于编制本指南，作为现有设计手册的配套指南。这些领域的指导将确保GSHP系统相对于竞争性的HVAC系统提供其特有的能源效率和维护节省。本指南涵盖了调试过程、预防性维护计划以及针对四个主要子系统的故障排除程序，包括症状、可能原因和解决方案或纠正措施。
调试、预防性维护和故障排除指南用于商业地源热泵系统
时间同步标准适用于收集、存储、分发和处理时间敏感数据的工厂组件。工厂组件包括用于制造美利体育官网首页网址、维护美利体育官网首页网址、提供工艺资源、配置工厂、控制工艺的应用程序。特别是，它包括用于制造的美利体育官网首页网址。注意：本标准不旨在解决与其使用相关的任何安全问题。使用本标准的人员有责任建立适当的安全和健康实践，并确定监管或其他限制的适用性，然后才能使用。
SPECIFICATION FOR TIME SYNCHRONIZATION AND DEFINITION OF THE TS-CLOCK OBJECT
Sampling Rate and Source Encoding for Professional Digital Audio Recording (Edition 1.0)
Branchenspezifische Umsetzung der Qellensicherung - Anwendungshinweise fuer Bekleidung@ Schuhe@ Lederwaren@ Heimtextilien
This part of IEC 61883 describes a protocol for the transmission of audio and music data employing IEEE 1394 and specifies essential requirements for the application of the protocol. This protocol can be applied to all modules or devices that have any kind of audio and/or music data processing@ generation and conversion function blocks. This standard deals only with the transmission of audio and music data. The control@ status and machine-readable description of these modules or devices should be defined outside of this standard according to each application area.
Consumer audio/video equipment - Digital interface - Part 6: Audio and music data transmission protocol
描述了一个使用IEEE 1394传输音频和音乐数据的协议，并规定了该协议在各种模块或美利体育官网首页网址上的基本要求。此标准仅涉及音频和音乐数据的传输，控制、状态和机器可读描述应根据每个应用领域定义。
Consumer audio/video equipment. Digital interface. Audio and music data transmission protocol
Denna Europastandard beskriver f?rfaranden f?r att fastst?lla kvalitetss?kringsniv?er (QAL) f?r automatiska m?tsystem (AMS) som ?r installerade p? industriella anl?ggningar f?r best?mning av r?kgaskomponenter och andra parametrar i r?kgaser. Standarden beskriver: — ett f?rfarande (QAL2) f?r att kalibrera AMS och f?r att best?mma variabiliteten f?r de uppm?tta v?rden som erh?llits fr?n detta med syftet att validera l?mpligheten hos ett AMS f?r den aktuella till?mpningen efter installationen av detta. — ett f?rfarande (QAL3) f?r att uppr?tth?lla och validera den kvalitet i m?tresultaten som kr?vs under normal drift av ett AMS genom att kontrollera att egenskaperna f?r nollpunkt och referenspunkt ?verensst?mmer med best?mningen under QAL1; — ett f?rfarande f?r den ?rliga tillsynskontrollen (AST) av AMS f?r att utv?rdera (i) att den fungerar korrekt och att dess prestanda bibeh?lls och (ii) att dess kalibreringsfunktion och variabilitet ?r desamma som tidigare best?mts. Denna standard ?r utarbetad f?r att anv?ndas efter det att AMS har godk?nts enligt de f?rfaranden som anges i EN ISO 14956 (QAL1). Denna standard ?r begr?nsad till kvalitetss?kring (QA) av AMS och innefattar ej QA av anl?ggningens datainsamlings- och datalagringssystem.
Stationary source emissions - Quality assurance of automated measuring systems
Lichtbogenschweisseinrichtungen - Teil 1: Schweissstromquellen (IEC 26/517/CD:2013)
Transportable ventilierte Raeume mit oder ohne innere Freisetzungsstelle; Deutsche Fassung EN 50381:2004
This paper will show that a frequency-domain approach for the specification of gear tooth tolerance limits is related to gear performance and transmission errors. In addition@ it is shown that one can compute@ from detailed tooth measurements@ the specific tooth error contributions that cause any particularly troublesome rotational harmonic contributions to transmission error@ thereby permitting manufacturing source identification of troublesome operation.
Performance - Based Gear - Error Inspection@ Specification@ and Manufacturing - Source Diagnostics
Furniture - assessment of the ignitability of upholstered furniture part1:lignition source-smouldering cigarette
This European Standard specifies a procedure to demonstrate the equivalence of an alternative method (AM) with the reference method (RM) or the standard reference method (SRM), both implemented to determine the same measurand. In particular, this European Standard provides the statistical tools and different criteria to evaluate the alternative method. This does not release the body performing the equivalence testing from bearing technical and analytical judgement on the evaluation of the different criteria. Three steps are required for demonstration of equivalence: - description of the alternative method and setting of the field of application (measurement range and type of gas matrix);- determination of the performance characteristics of the alternative method and calculation of the expanded uncertainty where appropriate and check of compliance with the maximum expanded uncertainty allowed for the reference method; - check of repeatability and lack of systematic deviation of the alternative method in the field or on a recognized test bench in comparison with the reference method for the type of matrix defined in the field of equivalence. This European Standard requires that a reference method has been defined and validated. This European Standard only considers the case of linear quantitative methods. This European Standard is applicable to manual and automated methods.This European Standard has been drawn up for laboratories working in air quality measurements and consequently an example taken from this sector are presented in Annex A.
Stationary source emissions - Demonstration of equivalence of an alternative method with a reference method
