IEC - International Electrotechnical Commission Datasheets for Standards and Technical Documents
Standards and technical documents includes standards, codes, regulation, handbooks, manuals, comprehensive guides and other formal publications. Standards, codes, and regulation establish uniform specifications, procedures or technical criteria.
Standards and Technical Documents: Learn more
| Product Name | Notes |
|---|---|
| Addresses the instruments and associated methods for measuring isotopes 220 and 222 of radon and their subsequent short-lived decay products in gases. Helps to define type tests which have to... | |
| Addresses the interface requirements between the PV system and the utility, and provides technical recommendations. | |
| Applies to 24 to 96 channel digital audio recording on 12,7 mm or 25,4 mm wide tape hereinafter called tape), with stationary heads, for professional use. Defines the mechanical and... | |
| Applies to 8 to 64 channel digital audio recording on 12,7 mm or 25,4 mm wide tape, with stationary heads, for professional use. Defines the mechanical and electrical characteristics necessary... | |
| Applies to apparatus for the non-destructive measurement of radioactive contamination of fur and other cloth samples for the presence of gamma emitting radionuclides. | |
| Applies to centralized systems intended for continuous monitoring of radiation and/or levels of radioactivity in nuclear facilities, primarily in support of radiological protection in the working areas. Specifies general characteristics,... | |
| Applies to electrical and electrically operated indicating, recording and control instruments. Establishes dimensional interchangeability between instruments made by different manufacturers. To fulfil this requirement, a defined set of dimensions has... | |
| Applies to fixed, single-phase, air-cooled independant or associated safety isolating transformers. This part 2 supplements or modifies the corresponding clauses in IEC 61558-1. It has the status of a group... | |
| Applies to liquid crystal and solid-state display modules such as the following: - static/segment type liquid crystal display modules; - passive matrix monochrome and colour liquid crystal display modules; -... | |
| Applies to liquid crystal cells of the segment type monochrome liquid crystal display cells. It gives details of the quality assessment procedures, the inspection requirements, screening sequences, sampling requirements and... | |
| Applies to liquid crystal cells of the segment type monochrome. Gives details of the quality assessment procedures, the inspection requirements, screening sequences, sampling requirements and test and measurement procedures required... | |
| Applies to measurements of electromagnetic fields from operational transmitting equipment to ensure that the transmissions do not constitute a potential hazard to workers or to the general public. | |
| Applies to range hoods incorporating a fan for the recirculation or forced removal of air from above a hob situated in a household kitchen. The standard defines the mainperformance characteristics... | |
| Applies to reproducing equipment for videodisks for home use that conforms to the specifications of IEC 60844, IEC 60845, IEC 60856 and IEC 60857. Deals with listing and defining the... | |
| Applies to standardization of protection communication interfacing for digital protection equipment and related control and monitoring devices to be used in the same electrical installation. | |
| Applies to stationary or portable single-phase or poly-phase air-cooled (natural or forced) independent or associated, isolating or safety isolating transformers intended for use on construction sites, having a rated supply... | |
| Applies to surge protective devices (SPD's) used to protect, under specific conditions, electrical systems and equipment against various overvoltage and impulse curents (e.g. lightning, switching surges).Information is provided on equipment... | |
| Applies to the assessment of image attribution on prints and transparencies produced from electronic sources. Specifies test signals, measurement conditions and forms of reporting the results so as to make... | |
| Applies to the basic methods of measurement of the audio characteristics of the digital audio part of audio and audiovisual equipment (for both consumer and professional uses). This standard only... | |
| Applies to the variation of group delay of a wave propagated in waveguide or waveguide assemblies. Characterizes the group delay variation of a wave propagated in waveguide or waveguide assemblies. | |
| Applies to utility-interconnect ed photovoltaic (PV) power systems operating in parallel with the utility and utilizing static (solid-state) non-islanding inverters for the conversion of DC to AC. Lays down requirements... | |
| Contains a new subclause on surges and a modified subclause on voltage dips, short interruptions and voltage variations (electromagnetic compatibility). | |
| Contains the definitions, designations and general requirements of aramid pressboard for electrical purposes. The selection of these materials is also recommended for use in applications other than electrical insulation. | |
| Contains the definitions, designations and general requirements of corrugated pressboard and presspaper for electrical purposes. | |
| Contains the formal syntax and semantics of all Verilog HDL constructs; the formal syntax and semantics of Standard Delay Format (SDF) constructs; simulation system tasks and functions,such as text output... | |
| Contains the minimum initial test and measurement requirements and severities for a fibre optic attenuator to meet the requirements of category U environments. The contents of the corrigendum of October... | |
| Contains the minimum initial test and measurement requirements and severities for a fibre optic attenuator to meet the requirements of category U environments. | |
| Covers the general features concerning tests and calibrations of radon and radon decay product measuring instruments. Emphasizes the definition and use of reference atmospheres. Is intended to help the user... | |
| Deals with all aspects of safety (such as electrical, thermal and mechanical) of: a) Stationary or portable, single-phase or polyphase, air-cooled (natural or forced) isolating and safety isolating transformers; b)... | |
| Deals with all aspects of safety such as electrical, thermal and mechanical aspects. This part of IEC 61558 applies to fixed single-phase air-cooled (natural or forced) associated transformers (incorporated or... | |
| Deals with all aspects of safety such as electrical, thermal and mechanical. This part 2-13 of IEC 61558 applies to stationary or portable, single-phase or polyphase, air-cooled (natural or forced),... | |
| Deals with protection against lightning of outdoor telecommunication lines using metallic conductors (for example, access networks, lines between buildings). These lines concern: - telecommunication lines connecting a switch with a... | |
| deals with the basic measurement methods of the audio charac-teristics of the digital audio part of audio and audiovisual equipment for consumer use. The common measuring conditions and methods are... | |
| defines a protocol enabling precise synchronization of clocks in measurement and control systems implemented with technologies such as network communication, local computing, and distributed objects. The protocol will be applicable... | |
| Defines assessment procedures in such a manner that electronic components released by one participating country as conforming with the requirements of an applicable specification are equally acceptable in all participating... | |
| Defines general procedures for quality assessment to be used in the IECQ system and gives general rules for measuring methods of electrical and optical characteristics, rules for climatic and mechanical... | |
| Defines predicted short-term characteristics (instantaneous and for a typical daily period) of direct coupled photovoltaic (PV) water pumping systems. | |
| Defines standard procedures for calibrating optical fibre chromatic dispersion test sets. The procedures apply to calibration laboratories, and to manufacturers and users of CD test sets, for: (a) calibrating CD... | |
| Defines type test methods permitting calibration and measurement of the effectiveness of radon daughters' compensation of radioactive aerosol monitors. | |
| Defines VHSIC Hardware Description Language (VHDL)accurately. Its primary audiences are the implementor of tools supporting the language and the advanced user of the language. Other users are encouraged to use... | |
| Describes a method for calculation of the mechanical and thermal effects on rigid conductors caused by short-circuit currents in d.c. auxilliary installations in power plants and substations, as described in... | |
| Describes a method for simultaneous measurement of conductance G and capacitance C enabling the calculation of the dielectric dissipation factor tan delta of insulating liquides. Method applies to both unused... | |
| Describes a test method which can provide preliminary differentiation between similar insulating materials, with respect to their resistance to damage when exposed to high-voltage, low-current arc discharges, occurring close to... | |
| Describes method for calculating short-circuit currents in d.c. auxilliary systems in power plants and substations, which can be equipped with the following equipment, acting as short-circuit current sources: - rectifiers... | |
| Describes procedures for periodic testing of conventional, integrating-averagin g, and integrating sound level meters conforming to the class 1 or class 2 requirements of IEC 61672-1:2002. The aim of the... | |
| Describes the calibration of test sets which perform end-face image analysis. This is also known as near-field or grey-scale analysis. The principles may also be applied to test sets of... | |
| describes the characteristics of a digital multiple channel, multiple carrier audio transmission system as an extension to conference interpretation or similar systems using the frequency ranges 45 kHz to 1... | |
| Describes the essential ratings and characteristics of LCD cells and passive matrix monochrome liquid crystal display modules. It does not apply to active matrix LCD cells nor to multicolour cells. | |
| Describes the essential ratings and characteristics of matrix colour liquid crystal display modules. | |
| Describes the fundamental construction requirements for photovoltaic modules in order to provide safe electrical and mechanical operation during their expected lifetime. Addresses the prevention of electrical shock, fire hazards, and... | |
| Describes the measurement of screening attenuation by the reverberation, or stirred, chamber, suitable for virtually any type of microwave component and having no theoretical upper frequency limit. It is only... | |
| Describes the measurement of the power holding of a waveguide by the use of a multiplying loop. | |
| Describes the principles for the selection, operation, location and coordination of SPDs connected to telecommunication and signalling networks with nominal system voltages up to 1 000 V r.m.s. a.c. and... | |
| Describes the specific requirements for testing instruments intended for measuring the activity concentration of airborne radon decay products and/or the volume potential alpha energy. Covers test procedures, radiation characteristics, electrical,... | |
| Describes the sweep frequency method used for the measurement of return loss on waveguide and waveguide assemblies. The contents of the corrigendum of July 2006 have been included in this... | |
| Describes the test procedure intended to characterise the level of unwanted signals caused by the presence of two or more transmitting signals in waveguides or waveguide assemblies. | |
| Describes the testing requirements for photovoltaic modules in order to provide safe electrical and mechanical operation during their expected lifetime. Addresses the prevention of electrical shock, fire hazards, and personal... | |
| Describes thre test procedures intended to characterize the cross-polar properties of waveguides. | |
| Details the test specifications for metal oxide varistors (MOV), which are used for applications up to 1000 V a.c. or 1500 V d.c. in power line, or telecommunication, or signalling... | |
| Determines the resistance of the module to corrosion from salt mist. | |
| Determines the susceptibility of a module to accidental impact damage. | |
| Digital multirack tapes, with their enormous data storage capacity, are an ideal medium for storing digital audio data with words wider than 16 bits. The method described herein is also... | |
| Establishes the general requirements for delivery of qualified products through manufacturing line approval under the IECQ system and for registration in the Qualified Manufacturer List (QML). Also describes procedures and... | |
| Gas discharge tubes (GDTs) are used for applications up to 1 000 V a.c. or 1 500 V d.c. in communication or signalling circuits. They are defined as a gap,... | |
| Gives details of the quality assessment procedures, inspection requirements, screening sequences, sampling requirements and test and measurement procedures required for the assessment of liquid crystal display modules. This standard is... | |
| Gives electroacoustical performance specifications for three kinds of sound measuring instruments: - a conventional sound level meter that measures exponential time-weighted sound level; - an integrating-averagin g sound level meter... | |
| Gives guidance for the use of passive a.c. harmonic filters and shunt capacitors for the limitation of harmonics and power factor correction intended to be used in industrial applications, at... | |
| Gives guidance for uniform rules for the drafting of specifications for microwave ferrite components. | |
| Gives guidance on the use of failure rate data for the reliability prediction of components in electronic equipment. Reference conditions for failure rate data are specified, so that data from... | |
| Gives methods for measuring and specifying those characteristics of audio infra-red (IR) transmission systems for conference and similar systems which are not covered by part 1. Replaces chapter 2 of... | |
| Gives methods for measuring and specifying those characteristics of wide band audio IR transmission systems not covered by part 1 of this standard. This consolidated version consists of the first... | |
| Gives methods for measuring and specifying those characteristics of wide band audio IR transmission systems not covered by part 1 of this standard. | |
| Gives methods of measuring and specifiying the common technical features of systems using diffusely radiated or wide beams of infra-red radiation as carriers of information, mainly representing audio and/or video,... | |
| Gives test methods (type and dimension of corrugation, dimensional changes on drying, compressive strength and compression modulus) for the materials classified in IEC 61628-1. This consolidated version consists of the... | |
| Gives test methods (type and dimension of corrugation, dimensional changes on drying, compressive strength and compression modulus) for the materials classified in IEC 61628-1. | |
| Gives the means for determining the reflection coefficient at the junction of two similar rectanglular waveguides due to: differences in the wavguide internal dimensions, lateral displacement between the waveguide axes... | |
| Gives the methods of test applicable for the materials classified in IEC 61629-1. | |
| Identifies requirements pertinent to the integration of the monitoring functions into a centralized system. Considers requirements for general and design characteristics, electrical performance requirements and tests, mechanical performance requirements and... | |
| IEC 61557-10:2013 specifies the requirements for combined measuring equipment which combines into one piece of apparatus, several measuring functions or methods of testing, measuring or monitoring according to the respective... | |
| IEC 61557-10:2024 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC... | |
| IEC 61557-11:2009 specifies the requirements for testing equipment applied to the testing of the effectiveness of residual current monitors (RCMs) of type A and type B, which are already installed... | |
| IEC 61557-11:2020 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61557-11:2020 specifies the requirements for test equipment applied to the testing of the effectiveness of residual current monitors (RCM) that are already installed in distribution systems. This test equipment... | |
| IEC 61557-12:2018 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61557-12:2018 specifies requirements for power metering and monitoring devices (PMD) that measure and monitor the electrical quantities within electrical distribution systems, and optionally other external signals. These requirements also... | |
| IEC 61557-12:2018+A1:202 1 specifies requirements for power metering and monitoring devices (PMD) that measure and monitor the electrical quantities within electrical distribution systems, and optionally other external signals. These requirements... | |
| IEC 61557-13:2011 defines special performance requirements for hand-held and hand-manipulated current clamps and sensors for measurement of leakage currents in electrical distribution systems up to 1 000 V a.c. and... | |
| IEC 61557-13:2023 defines special performance requirements for hand-held and hand manipulated current clamps and sensors for measurement of leakage currents in electrical distribution systems up to 1 000 V AC... | |
| IEC 61557-14:2013 defines special requirements for test and measurement equipment used to determine the electrical safety of electrical equipment of machinery according to IEC 60204-1. IEC 61010 and the existing... | |
| IEC 61557-14:2023 defines special requirements for test and measurement equipment used to determine the electrical safety of electrical equipment of machinery in accordance with IEC 60204-1. This International Standard is... | |
| IEC 61557-15:2014 specifies requirements related to functional safety and is based on the IEC 61508 standard series for the realization of Insulation Monitoring Devices (IMD) as specified in IEC 61557-8... | |
| IEC 61557-16:2014 defines performance requirements for test and measurement equipment to determine the effectiveness of the protective measures of electrical measures for electrical equipment and/or medical electrical equipment described in... | |
| IEC 61557-16:2023 specifies the requirements applicable to the performance for test and measurement equipment in order to determine the effectiveness of the protective measures for electrical equipment and/or medical electrical... | |
| IEC 61557-17:2021 defines minimum performance requirements for non-contact AC voltage indicators to reduce the risk of electric shock for the testing person and bystanders caused by the wrong interpretation of... | |
| IEC 61557-1:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61557-1:2019 specifies the general requirements applicable to measuring and monitoring equipment for testing the electrical safety in low-voltage distribution systems with nominal voltages up to 1 000 V AC... | |
| IEC 61557-1:2019+AMD1:20 24 CSV specifies the general requirements applicable to measuring and monitoring equipment for testing the electrical safety in low-voltage distribution systems with nominal voltages up to 1 000... | |
| IEC 61557-2:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61557-2:2019 specifies the requirements applicable to equipment for measuring the insulation resistance of equipment and installations in the de-energized state IEC 61557-2:2019 cancels and replaces the second edition published... | |
| IEC 61557-3:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61557-3:2019 specifies the requirements applicable to equipment for measuring the loop impedance between a line conductor and protective conductor; between a line conductor and neutral; or between two line... | |
| IEC 61557-4:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61557-4:2019 specifies the requirements applicable to equipment for measuring the resistance of earth conductors, protective earth conductors and conductors for equipotential bonding, including their connections and terminals, with an... | |
| IEC 61557-5:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61557-5:2019 specifies the requirements applicable to measuring equipment for measuring the resistance to earth using an AC voltage. IEC 61557-5:2019 cancels and replaces the second edition published in 2007. | |
| IEC 61557-6:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61557-6:2019 specifies the requirements applicable to measuring equipment for testing the effectiveness of protective measures of residual current devices (RCD) installed in TT, TN and IT systems. It is... | |
| IEC 61557-7:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61557-7:2019 specifies the requirements applicable to measuring equipment for testing the phase sequence in three-phase distribution systems. Indication of the phase sequence can be mechanical, visual and/or audible. This... | |
| IEC 61557-7:2019+AMD1:20 23 specifies the requirements applicable to measuring equipment for testing the phase sequence in three-phase distribution systems. Indication of the phase sequence can be mechanical, visual and/or audible. | |
| IEC 61557-8:2014 specifies the requirements for insulation monitoring devices (IMD) which permanently monitor the insulation resistance RF to earth of unearthed a.c. IT systems, of a.c. IT systems with galvanically... | |
| IEC 61557-9:2009 specifies the requirements for insulation fault location systems which localize insulation faults in any part of the system in unearthed IT a.c. systems and unearthed IT a.c. systems... | |
| IEC 61557-9:2014 specifies the requirements for the insulation fault location system (IFLS) which localizes insulation faults in any part of the system in unearthed IT a.c. systems and unearthed IT... | |
| IEC 61557-9:2023 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC... | |
| IEC 61557-9:2023 specifies the requirements for the insulation fault location system (IFLS) that localizes insulation faults in any part of the system in unearthed IT AC systems and unearthed IT... | |
| IEC 61558-1:2005+A1:2009 deals with safety aspects of power transformers, power supplies, reactors and similar products such as electrical, thermal and mechanical safety. This standard covers the following types of dry-type... | |
| IEC 61558-1:2017 deals with safety aspects of transformers, reactors, power supply units and combinations thereof such as electrical, thermal and mechanical safety. This document covers the following independent or associated... | |
| IEC 61558-1:2017 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61558-2-10:2014 deals with the safety of separating transformers with high insulation level and separating transformers with output voltages exceeding 1 000 V. Transformers incorporating electronic circuits are also covered... | |
| IEC 61558-2-10:2024 deals with the safety of separating transformers with high insulation level and separating transformers with output voltages exceeding 1 000 V. Transformers incorporating electronic circuits are also covered... | |
| IEC 61558-2-10:2024 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user... | |
| IEC 61558-2-10:2024 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61558-2-12:2011 deals with the safety of constant voltage transformers for general applications and power supply units for constant voltage for general applications. Constant voltage transformers incorporating electronic circuits are... | |
| IEC 61558-2-12:2024 deals with the safety of constant voltage transformers for general applications and power supply units for constant voltage for general applications. Constant voltage transformers incorporating electronic circuits are... | |
| IEC 61558-2-12:2024 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user... | |
| IEC 61558-2-12:2024 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61558-2-13:2009 deals with the safety of auto transformers for general applications and power supply units incorporating auto transformers for general applications. Transformers incorporating electronic circuits are also covered by... | |
| IEC 61558-2-13:2022 deals with the safety of auto-transformers for general applications and power supply units incorporating auto-transformers for general applications. Transformers incorporating electronic circuits are also covered by this document. | |
| IEC 61558-2-13:2022 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user... | |
| IEC 61558-2-13:2022 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61558-2-14:2012 deals with safety of variable transformers for general applications and power supply units incorporating variable transformers for general applications. Transformers incorporating electronic circuits are also covered by this... | |
| IEC 61558-2-14:2022 deals with the safety of variable transformers for general applications and power supply units incorporating variable transformers for general applications. Transformers incorporating electronic circuits are also covered by... | |
| IEC 61558-2-14:2022 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61558-2-15:2011 deals with safety aspects of isolating transformers for the supply of medical locations. This second edition cancels and replaces the first edition published in 1999. It constitutes a... | |
| IEC 61558-2-15:2022 deals with safety of isolating transformers for medical IT systems for the supply of medical locations. This third edition cancels and replaces the second edition published in 2011. | |
| IEC 61558-2-15:2022 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user... | |
| IEC 61558-2-15:2022 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61558-2-16:2009 deals with the safety of switch mode power supply units and transformers for switch mode power supply units. Transformers incorporating electronic circuits are also covered by this standard. | |
| IEC 61558-2-16:2009+A1:2 013 deals with the safety of switch mode power supply units and transformers for switch mode power supply units. Transformers incorporating electronic circuits are also covered by this... | |
| IEC 61558-2-16:2021 deals with the safety of switch mode power supply units and transformers for switch mode power supply units. This second edition cancels and replaces the first edition published... | |
| IEC 61558-2-1:2021 deals with the safety of separating transformers for general applications and power supply units incorporating separating transformers for general applications. Transformers incorporating electronic circuits are also covered by... | |
| IEC 61558-2-20:2010 deals with the safety of small reactors for general applications. This part is applicable to stationary or portable, single-phase or polyphase, air-cooled (natural or forced) general purpose reactors... | |
| IEC 61558-2-20:2022 deals with the safety of small reactors for general applications. Small reactors incorporating electronic circuits are also covered by this document. This third edition cancels and replaces the... | |
| IEC 61558-2-20:2022 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61558-2-23:2010 deals with the safety of transformers for construction sites and power supply units incorporating transformers for construction sites. Transformers incorporating electronic circuits are also covered by this standard. | |
| IEC 61558-2-23:2024 deals with the safety of transformers for construction sites and power supply units incorporating transformers for construction sites. Transformers incorporating electronic circuits are also covered by this document. | |
| IEC 61558-2-23:2024 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user... | |
| IEC 61558-2-23:2024 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61558-2-26:2013 deals with the safety of transformers, power supply units and switch mode power supply units all for saving energy and other purposes in electrical installations by adjusting the... | |
| IEC 61558-2-2:2022 deals with the safety of control transformers and power supply units incorporating control transformers. Transformers incorporating electronic circuits are also covered by this document. This third edition cancels... | |
| IEC 61558-2-2:2022 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user... | |
| IEC 61558-2-2:2022 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61558-2-3:2010 deals with the safety of ignition transformers for gas and oil burners. Ignition transformers incorporating electronic circuits are also covered by this standard. This second edition cancels and... | |
| IEC 61558-2-3:2023 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user... | |
| IEC 61558-2-3:2023 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61558-2-4:2009 deals with the safety of isolating transformers for general applications and power supply units incorporating isolating transformers for general applications. Transformers incorporating electronic circuits are also covered by... | |
| IEC 61558-2-4:2021 deals with the safety of isolating transformers for general applications and power supply units incorporating isolating transformers for general applications. Transformers incorporating electronic circuits are also covered by... | |
| IEC 61558-2-4:2021 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61558-2-5:2010 deals with the safety of shaver transformers, power supply units incorporating a shaver transformer, and shaver supply units. Shaver transformers incorporating electronic circuits are also covered by this... | |
| IEC 61558-2-5:2024 deals with the safety of shaver transformers, power supply units incorporating a shaver transformer, and shaver supply units. Shaver transformers incorporating electronic circuits are also covered by this... | |
| IEC 61558-2-5:2024 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user... | |
| IEC 61558-2-5:2024 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61558-2-6:2009 deals with the safety of safety isolating transformers for general applications and power supply units incorporating safety isolating transformers for general applications. Transformers incorporating electronic circuits are also... | |
| IEC 61558-2-6:2021 deals with the safety of safety isolating transformers for general applications and power supply units incorporating safety isolating transformers for general applications. Transformers incorporating electronic circuits are also... | |
| IEC 61558-2-6:2021 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61558-2-7:2023 deals with the safety of transformers for toys and power supply units incorporating transformers for toys. Transformers for toys incorporating electronic circuits are also covered by this document. | |
| IEC 61558-2-7:2023 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user... | |
| IEC 61558-2-7:2023 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61558-2-8:2010 deals with the safety of bell and chime transformers and power supply units incorporating bell and chime transformers. Transformers incorporating electronic circuits are also covered by this standard. | |
| IEC 61558-2-8:2024 deals with the safety of bell and chime transformers and power supply units incorporating bell and chime transformers. Transformers incorporating electronic circuits are also covered by this document. | |
| IEC 61558-2-8:2024 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user... | |
| IEC 61558-2-8:2024 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61558-2-9:2010 deals with the safety of transformers for class III handlamps for tungsten filament lamps and power supply units incorporating transformers for class III handlamps for tungsten filament lamps. | |
| IEC 61558-2-9:2024 deals with the safety of transformers for class III handlamps and power supply units incorporating transformers for class III handlamps. Transformers incorporating electronic circuits are also covered by... | |
| IEC 61558-2-9:2024 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user... | |
| IEC 61558-2-9:2024 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61559-1:2009 specifies general characteristics, general test procedures, radiation, electrical, safety, and environmental characteristics and the identification certificate for centralized systems intended for continuous monitoring of radiation and/or levels of... | |
| IEC 61563:2019 applies to instruments used to measure the activity and/or activity concentration of gamma-emitting radionuclides in food and/or foodstuffs. This document applies to instruments used both as gross count... | |
| IEC 61577-2:2014 describes the specific requirements for instruments measuring the activity concentration of airborne 222Rn and 220Rn outdoors, in dwellings and in workplaces including underground mines. This standard... | |
| IEC 61577-3:2011 describes the specific requirements for instruments measuring the volumetric activity of airborne short-lived radon decay products and/or their ambient potential alpha-energy concentration outdoors, in dwellings, and in workplaces... | |
| IEC 61577-4:2009 concerns the System for Test Atmospheres with Radon (STAR) needed for testing, in a reference atmosphere, the instruments measuring radon and RnDP. Provides guidance for those facing problems... | |
| IEC 61587-1:2011 specifies environmental requirements, test set-up, as well as safety aspects for empty enclosures, i.e. cabinets, racks, subracks and chassis under indoor conditions. The purpose of this standard is... | |
| IEC 61587-1:2016: specifies environmental requirements, test set-up, as well as safety aspects for empty enclosures, i.e., cabinets, racks, subracks, chassis with an integrated subrack, and associated plug-in units under indoor... | |
| IEC 61587-1:2022 specifies environmental requirements, test set-ups, as well as safety aspects for empty enclosures, i.e. cabinets, racks, subracks, chassis, chassis integrated subracks and associated plug-in units under indoor condition... | |
| IEC 61587-2:2000 Specifies seismic requirements for cabinets or racks as defined in the IEC 60917 and IEC 60297 series. Ensures physical integrity and environmental performance in mechanical cabinets or racks,... | |
| IEC 61587-2:2011 specifies seismic tests for cabinets and racks accommodated with IEC 60917 and 60297 series. It applies, in whole or in part, only to the mechanical structures of cabinets... | |
| IEC 61587-3:2013 specifies the tests for empty cabinets and subracks concerning electromagnetic shielding performance, in the frequency range of 30 MHz to 3 000 MHz. Stipulated attenuation values are chosen... | |
| IEC 61587-4:2012 provides the combinations of different degrees of protection for cabinet systems regarding IP code, climate levels, static and dynamics load tests, electromagnetic shielding and seismic requirements. Optimal economical... | |
| IEC 61587-5:2013 specifies seismic test requirements for chassis, subracks, and plug-in units as defined in the IEC 60297 and IEC 60917 series. It applies in whole or in part, only... | |
| IEC 61587-6:2017 specifies security aspects and security performance levels of indoor cabinets in accordance with IEC 60917 and IEC 60297. This document intends to clarify the relationship between the installation... | |
| IEC 61587-6:2021 specifies security aspects and security performance levels of the mechanical construction of indoor cabinets in accordance with IEC 60917 (all parts) and IEC 60297 (all parts). This document... | |
| IEC 61588:2009(E) defines a protocol enabling precise synchronization of clocks in measurement and control systems implemented with technologies such as network communication, local computing, and distributed objects. The protocol is... | |
| IEC 61588:2021 defines a network protocol, the Precision Time Protocol (PTP), enabling accurate and precise synchronization of the real-time clocks of devices in networked distributed systems. The protocol is applicable... | |
| IEC 61591:2019 applies to cooking fume extractors incorporating a fan for the recirculation or extraction mode situated in a household kitchen. It can also be used for cooking fume extractors... | |
| IEC 61591:2023 applies to cooking fume extractors incorporating a fan for the recirculation or extraction mode situated in a household kitchen. It can also be used for cooking fume extractors... | |
| IEC 61591:2023 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC... | |
| IEC 61603-8-1:2003 specifies the characteristics and measuring methods for digital audio signal transmission systems using infrared radiation with sub-carrier of the frequency ranges 3 MHz to 6 MHz. It describes... | |
| IEC 61605:2016 specifies marking codes for fixed inductors. It covers the inductance values and their tolerances as well as dates. This edition includes the following significant technical changes with respect... | |
| IEC 61606-1:2009 is applicable to the basic methods of measurement of the audio characteristics of the digital audio part of audio and audiovisual equipment for all of consumer use, professional... | |
| IEC 61606-2:2009 is applicable to the basic measurement methods of the audio characteristics of the digital audio part of audio and audiovisual equipment for consumer use. It specify conditions and... | |
| IEC 61606-3:2008 is applicable to the basic measurement methods of audio equipment for professional use. The definitions, measuring conditions and methods common to both consumer and professional equipment are described... | |
| IEC 61606-4:2005 specifies the basic measurement methods of a linear PCM signal for an audio part of personal computers (PCs) and applies to both desktop and portable computers. The common... | |
| IEC 61631:2020 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61631:2020 specifies a test method for the mechanical strength of cores made of magnetic oxides. This test method is suitable for most of the E-cores, ETD-cores, I-cores and ring-cores... | |
| IEC 61636-1:2016(E) is the definition of an exchange format, utilizing XML, for exchanging data resulting from executing tests of a unit under test (UUT) via a test program in an... | |
| IEC 61636-1:2021 (E) provides the definition of an exchange format, utilizing XML, for exchanging data resulting from executing tests of a unit under test (UUT) via a test program in... | |
| IEC 61636-2:2023 (E) provides the definition of an exchange format, utilizing XML, for exchanging maintenance action information (MAI) associated with the removal, repair, and replacement of system components to maintain/support... | |
| IEC 61636:2016(E) is an implementation-indep endent specification for a software interface to information systems containing data pertinent to the diagnosis and maintenance of complex systems consisting of hardware, software, or... | |
| IEC 61636:2021 (E) is an implementation-indep endent specification for a software interface to information systems containing data pertinent to the diagnosis and maintenance of complex systems consisting of hardware, software,... | |
| IEC 61639-99:2016(E) is a component of the Software Interface for Maintenance Information Collection and Analysis (SIMICA). The SIMICA family of standards provides an implementation-indep endent software interfaces to information systems... | |
| IEC 61643-01: 2024 contains the common requirements for all SPDs. This document is applicable to devices for surge protection against indirect and direct effects of lightning or other transient overvoltages,... | |
| IEC 61643-1(Edition 1.1 - 2002) Corrigendum 1 Surge protective devices connected to low-voltage power distribution systems - Part 1: Performance requirements and testing methods | |
| IEC 61643-11:2011 is applicable to devices for surge protection against indirect and direct effects of lightning or other transient overvoltages. These devices are packaged to be connected to 50/60 Hz... | |
| IEC 61643-12:2008 describes the principles for selection, operation, location and coordination of SPDs to be connected to 50 Hz to 60 Hz a.c. and to d.c. power circuits and equipment... | |
| IEC 61643-12:2020 describes the principles for the selection, operation, location and coordination of SPDs to be connected to 50/60 Hz AC power circuits, and equipment rated up to 1 000... | |
| IEC 61643-21:2000+A1:200 8 is applicable to devices for surge protection of telecommunications and signalling networks against indirect and direct effects of lightning or other transient overvoltages. The purpose of these... | |
| IEC 61643-21:2000+A1:200 8+A2:2012 is applicable to devices for surge protection of telecommunications and signalling networks against indirect and direct effects of lightning or other transient overvoltages. The purpose of these... | |
| IEC 61643-22:2015 describes the principles for the selection, operation, location and coordination of SPDs connected to telecommunication and signalling networks with nominal system voltages up to 1 000 V r.m.s. | |
| IEC 61643-311:2013 is applicable to gas discharge tubes (GDT) used for overvoltage protection in telecommunications, signalling and low-voltage power distribution networks with nominal system voltages up to 1 000 V... | |
| IEC 61643-312:2013 is applicable to gas discharge tubes (GDT) used for overvoltage protection in telecommunications, signalling and low-voltage power distribution networks with nominal system voltages up to 1 000 V... | |
| IEC 61643-31:2018 is applicable to Surge Protective Devices (SPDs), intended for surge protection against indirect and direct effects of lightning or other transient overvoltages. These devices are designed to be... | |
| IEC 61643-32:2017 describes the principles for selection, installation and coordination of SPDs intended for use in Photovoltaic (PV) systems up to 1 500 V DC and for the AC side... | |
| IEC 61643-331:2017 is a test specification for metal oxide varistors (MOV), which are used for applications up to 1 000 V AC or 1 500 V DC in power line,... | |
| IEC 61643-331:2020 is a test specification for metal oxide varistors (MOV), which are used for applications up to 1 000 V AC or 1 500 V DC in power lines,... | |
| IEC 61643-331:2020 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61643-332:2024 describes the theory of operation, principles for the selection and application of MOVs to be connected to power lines or telecommunication or signalling circuits, up to 1 000... | |
| IEC 61643-341:2020 specifies standard test circuits and methods for thyristor surge suppressor (TSS) components. These surge protective components, SPCs, are specially formulated thyristors designed to limit overvoltages and divert surge... | |
| IEC 61643-351:2016 defines test circuits and test methods for determining and verifying the SIT surge parameters. Preferred performance values for key parameters are given. Surge isolation transformers (SITs) are used... | |
| IEC 61643-352:2018 covers the application of surge isolation transformers (SITs) that are used in telecommunication transformer applications with signal levels up to 400 V peak to peak. These transformers have... | |
| IEC 61646:2008 lays down requirements for the design qualification and type approval of terrestrial, thin-film photovoltaic modules suitable for long-term operation in general open-air climates as defined in IEC 60721-2-1. | |
| IEC 61649:2008 provides methods for analysing data from a Weibull distribution using continuous parameters such as time to failure, cycles to failure, mechanical stress, etc. This standard is applicable whenever... | |
| IEC 61666:2010 establishes general principles for the identification of terminals of objects within a system, applicable to all technical areas (for example mechanical engineering, electrical engineering, construction engineering, process engineering). | |
| IEC 61666:2010+A1:2021 establishes general principles for the identification of terminals of objects within a system, applicable to all technical areas (for example mechanical engineering, electrical engineering, construction engineering, process engineering). | |
| IEC 61669:2015 gives recommendations and requirements for the measurement and estimation of the real-ear acoustical performance characteristics of air-conduction hearing aids and for the measurement of certain acoustic properties of... | |
| IEC 61671-2:2016(E) defines an exchange format, utilizing extensible markup language (XML), for both the static description of instrument models, and the specific description of instrument instance information. | |
| IEC 61671-4:2016(E) defines an exchange format, utilizing extensible markup language (XML), for identifying all of the hardware, software, and documentation that is needed to test and diagnose a unit under... | |
| IEC 61671-6:2016(E) defines an exchange format, utilizing eXtensible Markup Language (XML), for both the static description of a test station, and the specific description of test station instance information. | |
| IEC 61671:2012(E) defines a standard exchange medium for sharing information between components of ATSs. This information includes test data, resource data, diagnostic data, and historic data. The exchange medium is... | |
| IEC 61672-1:2013 gives electroacoustical performance specifications for three kinds of sound measuring instruments: - time-weighting sound level meters that measure exponential-time-wei ghted, frequency-weighted sound levels; - integrating-averagin g sound level... | |
| IEC 61672-2:2013 provides details of the tests necessary to verify conformance to all mandatory specifications given in IEC 61672-1 for time-weighting sound level meters, integrating-averagin g sound level meters, and... | |
| IEC 61672-3:2013 describes procedures for periodic testing of time-weighting, integrating-averagin g, and integrating sound level meters that were designed to conform to the class 1 or class 2 specifications of... | |
| IEC 61672-5:2016(E) defines an exchange format, utilizing extensible markup language (XML), for both the static description of a test adapter by defining the interface between the unit under test (UUT)... | |
| IEC 61674:2012 specifies the performance and some related constructional requirements of diagnostic dosimeters intended for the measurement of air kerma, air kerma length product or air kerma rate, in photon... | |
| IEC 61674:2024 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC... | |
| IEC 61674:2024 specifies the performance and some related constructional requirements of DIAGNOSTIC DOSIMETERS intended for the measurement of AIR KERMA, AIR KERMA LENGTH PRODUCT or AIR KERMA RATE, in photon... | |
| IEC 61675-1:2013 specifies terminology and test methods for declaring the characteristics of positron emission tomographs. Positron emission tomographs detect the annihilation radiation of positron emitting Radionuclides by coincidence detection. No... | |
| IEC 61675-1:2022 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61675-1:2022 specifies terminology and test methods for declaring the characteristics of POSITRON EMISSION TOMOGRAPHS. POSITRON EMISSION TOMOGRAPHS detect the ANNIHILATION RADIATION of positron emitting RADIONUCLIDES by COINCIDENCE DETECTION. IEC... | |
| IEC 61675-2:1998 specifies terminology and test methods for describing the characteristics of Anger type rotational gamma camera single photon emission computed tomographs equipped with parallel hole collimators. As these systems... | |
| IEC 61675-2:2015 specifies terminology and test methods for describing the characteristics of gamma cameras equipped with parallel hole collimators for planar imaging. This second edition of IEC 61675-2 cancels and... | |
| IEC 61675-3:1998 specifies test methods for describing the characteristics of gamma camera based wholebody imaging systems. As these systems are based on Anger type gamma cameras this part of IEC... | |
| IEC 61676:2023 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61676:2023 specifies the performance requirements of instruments as used in the non-invasive measurement of X-RAY tube voltage up to 150 kV and the relevant compliance tests. This document also... | |
| IEC 61683:1999 Describes guidelines for measuring the efficiency of power conditioners used in stand-alone and utility-interactive photovoltaic systems, where the output of the power conditioner is a stable a.c. voltage... | |
| IEC 61689:2013 is applicable to ultrasonic equipment designed for physiotherapy containing an ultrasonic transducer generating continuous or quasi-continuous wave ultrasound in the frequency range 0,5 MHz to 5 MHz. This... | |
| IEC 61689:2022 is applicable to ultrasonic equipment designed for physiotherapy containing an ultrasonic transducer generating continuous or quasi-continuous (e.g. tone burst) wave ultrasound in the frequency range 0,5 MHz to... | |
| IEC 61689:2022 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61690-1:2000 defines the syntax and semantics for EDIF Version 3 0 0. EDIF Version 3 0 0 addresses EDIF Level 0 and Level 1. EDIF Version 3 0 0... | |
| IEC 61690-2:2000 defines the syntax and semantics for EDIF Version 4 0 0. EDIF Version 4 0 0 addresses EDIF Level 0 and Level 1. EDIF Version 3 0 0... | |
| IEC 61691-1-1:2011(E) Revises and enhances the VHDL language reference manual (LRM) by including a standard C language interface specification. The VHDL language was defined for use in the design and... | |
| IEC 61691-1-1:2023 defines the syntax and semantics of the VHSIC Hardware Description Language (VHDL). The acronym VHSIC (Very High Speed Integrated Circuits) in the language’s name comes from the U.S. | |
| IEC 61691-2:2001 is embodied in the Std_logic_1164 package package body. This standard is based on IEEE Std 1164-1993: Multivalue logic system for VHDL model interoperatibility. | |
| IEC 61691-6:2009(E) Defines IEC 61691-6/IEEE Std 1076.1 language, a hardware description language for the description and the simulation of analog, digital, and mixed-signal systems. The language, also informally known as... | |
| IEC 61691-6:2021(E) defines IEC 61691-6/IEEE Std 1076.1 language, a hardware description language for the description and the simulation of analog, digital, and mixed-signal systems. The language, also informally known as... | |
| IEC 61691-7:2009(E) defines SystemC®1 as an ANSI standard C++ class library for system and hardware design. The specific purpose is to provide a precise and complete defination of the System... | |
| IEC 61691-8:2021(E) defines the Analog/Mixed-Signal extensions for SystemC®, as an ANSI standard C++ class library based on SystemC for system and hardware design including analog/mixed-signal elements. The general purpose of... | |
| IEC 61701:2011 describes test sequences useful to determine the resistance of different PV modules to corrosion from salt mist containing Cl- (NaCl, MgCl2, etc.). All tests included in the sequences,... | |
| IEC 61701:2020 describes test sequences useful to determine the resistance of different PV modules to corrosion from salt mist containing Cl (NaCl, MgCl2, etc.). All tests included in the sequences... | |
| IEC 61703:2016 provides mathematical expressions for selected reliability, availability, maintainability and maintenance support measures defined in IEC 60050192:2015. In addition, it introduces some terms not covered in IEC 60050-192:2015. They... | |
| IEC 61709:2011 gives guidance on how failure rate data can be employed for reliability prediction of electric components in equipment. Reference conditions are numerical values of stresses that are typically... | |
| IEC 61709:2017 gives guidance on the use of failure rate data for reliability prediction of electric components used in equipment. The method presented in this document uses the concept of... | |
| IEC 61709:2017 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61710:2013 specifies procedures to estimate the parameters of the power law model, to provide confidence intervals for the failure intensity, to provide prediction intervals for the times to future... | |
| IEC 61724-1:2017 outlines equipment, methods, and terminology for performance monitoring and analysis of photovoltaic (PV) systems. It addresses sensors, installation, and accuracy for monitoring equipment in addition to measured parameter... | |
| IEC 61724-1:2021 outlines terminology, equipment, and methods for performance monitoring and analysis of photovoltaic (PV) systems. It also serves as a basis for other standards which rely upon the data... | |
| IEC 61724-1:2021 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61726:2015 describes the measurement of screening attenuation by the reverberation chamber test method, sometimes named mode stirred chamber, suitable for virtually any type of microwave component and having no... | |
| IEC 61726:2022 describes the measurement of screening attenuation by the reverberation chamber measurement method, also called mode stirred chamber method. This document is applicable to screening attenuation measurements of cable... | |
| IEC 61730-1:2004+A1:2011 +A2:2013 Describes the fundamental construction requirements for photovoltaic modules in order to provide safe electrical and mechanical operation during their expected lifetime. Addresses the prevention of electrical shock,... | |
| IEC 61730-1:2016 specifies and describes the fundamental construction requirements for photovoltaic (PV) modules in order to provide safe electrical and mechanical operation. Specific topics are provided to assess the prevention... | |
| IEC 61730-1:2023 specifies and describes the fundamental construction requirements for photovoltaic (PV) modules in order to provide safe electrical and mechanical operation. Specific topics are provided to assess the prevention... | |
| IEC 61730-2:2004+A1:2011 Describes the testing requirements for photovoltaic modules in order to provide safe electrical and mechanical operation during their expected lifetime. Addresses the prevention of electrical shock, fire hazards,... | |
| IEC 61730-2:2016 provides the testing sequence intended to verify the safety of PV modules whose construction has been assessed by IEC 61730-1. The test sequence and pass criteria are designed... | |
| IEC 61730-2:2016 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61730-2:2023 lists the tests a PV module is required to fulfil for safety qualification. This document applies for safety qualification only in conjunction with IEC 61730-1. The objective of... | |
| IEC 61730-2:2023 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61744:2023 provides standard procedures for the calibration of optical fibre chromatic dispersion (CD) test sets. This document is applicable to all types of CD test sets, with the exception... | |
| IEC 61745:2017 describes the calibration of test sets that perform end-face image analysis, also known as "near-field" or "grey-scale" analysis. The principles, however, can be applied to test sets of... | |
| IEC 61746-1: 2009 provides procedures for calibrating single-mode optical time domain reflectometers (OTDR). It only covers OTDR measurement errors and uncertainties. This standard does not cover correction of the OTDR... | |
| IEC 61746-2:2010 provides procedures for calibrating multimode optical time domain reflectometers (OTDR). It covers OTDR measurement errors and uncertainties. The test of the laser(s) source modal condition is included as... | |
| IEC 61747-1-1:2014 is a generic specification for liquid crystal display devices. It defines general procedures for testing and gives general rules for the measuring methods of the electrical and optical... | |
| IEC 61747-1-2:2014 gives the preferred terms, their definitions and symbols for liquid crystal devices, with the object of using the same terminology when publications are prepared in different countries. This... | |
| IEC 61747-10-1:2013 lists test methods applicable to liquid crystal display devices. It takes into account, wherever possible, the mechanical robustness test methods as outlined in IEC 60068. The object of... | |
| IEC 61747-10-2:2014(E) lists test methods applicable to liquid crystal display devices. It takes into account, wherever possible, the environmental test methods outlined in IEC 60068. The object of this standard... | |
| IEC 61747-2-1:2013 serves as a Blank Detail Specification (BDS) for a high quality approval system and contains requirements for style and layout and minimum content of detail specifications. These requirements... | |
| IEC 61747-2-2:2014(E) serves as a blank detail specification (BDS) for testing and contains requirements for style and layout and minimum content of detail specifications. These requirements are applicable when the... | |
| IEC 61747-20-1:2015(E) gives the details of testing and provides general rules for visual inspection of the non-active and active area of monochrome liquid crystal display cells by the human eye,... | |
| IEC 61747-20-2:2015(E) gives the details of the quality assessment procedures and provides general rules for the visual inspection of the non-active and active areas of monochrome matrix liquid crystal display... | |
| IEC 61747-20-3:2016(E) gives the details of the quality assessment procedures and provides general rules for visual inspection of the active area of transmissive type active matrix colour liquid crystal display... | |
| IEC 61747-2:2015(E) applies to liquid crystal display modules such as the following: - static/segment type liquid crystal display modules; - passive matrix monochrome liquid crystal display modules; - passive matrix... | |
| IEC 61747-3-1:2015(E) serves as a blank detail specification (BDS) for the IEC quality assessment system and contains requirements for style and layout and minimum content of the detail specifications. These... | |
| IEC 61747-30-1:2012 is restricted to transmissive liquid crystal display-modules using either segment, passive or active matrix and achromatic or colour type LCDs. Furthermore, the transmissive modes of transflective LCD modules... | |
| IEC 61747-30-3:2019(E) applies to transmissive type active matrix liquid crystal displays. This document defines general procedures for quality evaluation related to the motion performance of transmissive thin film transistor (TFT)... | |
| IEC 61747-30-4:2016(E) specifies the standard measurement conditions and measuring methods for determining the optical performance and power consumption of active matrix liquid crystal display modules with dynamic backlight units. | |
| IEC 61747-30-5:2019(E) specifies the standard measurement conditions and measuring methods for determining the optical properties of transparent liquid crystal display modules which operate in a transmissive mode. More specifically, this... | |
| IEC 61747-3:2015(E) applies to liquid crystal cells of the segment type monochrome. It gives details of the quality assessment procedures, inspection requirements, screening sequences, sampling requirements and test and measurement... | |
| IEC 61747-4-1:2014(E) describes the essential ratings and characteristics of matrix colour liquid crystal display (LCD) modules. This edition includes the following significant technical changes with respect to the previous edition:... | |
| IEC 61747-40-1:2013 is a mechanical performance testing guideline for cover glass used in electronic flat panel displays in mobile devices. This document focuses on key mechanical testing performance parameters and... | |
| IEC 61747-40-1:2019 provides mechanical performance testing guidelines for cover glass used in electronic flat panel displays in mobile devices. This document focuses on key mechanical testing performance parameters and covers... | |
| IEC 61747-40-1:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy... | |
| IEC 61747-40-2:2015(E) is a mechanical performance testing procedure for cover glass used in electronic flat panel displays in mobile devices. This standard is focused on the measurement of as-received edge... | |
| IEC 61747-40-3:2015(E) is a mechanical performance testing procedure for cover glass used in electronic flat panel displays in mobile devices. This standard is focused on the measurement of surface impact... | |
| IEC 61747-40-4:2015(E) is a mechanical performance testing procedure for cover glass used in electronic flat panel displays in mobile devices. This standard is focused on the measurement of as-received surface... | |
| IEC 61747-40-5:2018(E) is a mechanical performance testing procedure for cover glass used in electronic displays in mobile devices. This document focuses on the measurement of surface impact energy required to... | |
| IEC 61747-40-6:2018(E) is a mechanical performance testing procedure for cover glass used in electronic flat panel displays in mobile devices. This document focuses on the measurement of surface fracture load... | |
| IEC 61747-4:2012 describes the essential ratings and characteristics of LCD cells and passive matrix monochrome liquid crystal display modules. It does not apply to active matrix LCD cells nor to... | |
| IEC 61747-5-2:2011 gives the details of the quality assessment procedures and provides general rules for visual inspection of the active area of transmissive type active matrix colour liquid crystal display... | |
| IEC 61747-5-3:2009 applies to commercially available liquid crystal displays (LCDs). This standard applies to all LCD types, including transmissive, reflective or transflective liquid crystal display (LCD) modules using either segment,... | |
| IEC 61747-6-2:2011 gives details of the quality assessment procedures, the inspection requirements, screening sequences, sampling requirements, and test and measurement procedures required for the assessment of liquid crystal display modules. | |
| IEC 61747-6-3:2011 applies to transmissive type active matrix liquid crystal displays. This standard defines general procedures for quality assessment related to the motion performance of LCDs. It defines artifacts in... | |
| IEC 61753-021-02:2023 defines the minimum initial test and measurement requirements and severities which single-mode fibre optic connectors terminated as a pigtail or a patchcord satisfy in order to be categorized... | |
| IEC 61753-021-06:2023 defines the minimum initial test and measurement requirements and severities which single-mode fibre optic connectors terminated as a pigtail or a patchcord satisfy in order to be categorised... | |
| IEC 61753-021-3:2012 defines minimum initial test and measurement requirements and severities which a single-mode connector, either part of a pigtail, or part of a cord, must satisfy in order to... | |
| IEC 61753-022-2:2012 contains the minimum requirements and severities which a fibre optic connector terminated on multimode fibre must satisfy in order to be categorized as meeting the IEC standard category... | |
| IEC 61753-031-2:2014 contains the minimum initial tests and measurement requirements and severities which a non-wavelength selective branching device (NWBD) should satisfy in order to be categorized as meeting the requirement... | |
| IEC 61753-031-3:2009 contains the minimum initial tests and measurement requirements and severities which a non-wavelength selective branching device (NWBD) should satisfy in order to be categorized as meeting the requirements... | |
| IEC 61753-031-3:2014 contains the minimum initial tests and measurement requirements and severities which a non-wavelength selective branching device (NWBD) should satisfy in order to be categorized as meeting the requirements... | |
| IEC 61753-031-6:2008(E) provides the minimum initial tests and measurement requirements and severities which a non-wavelength selective branching device (NWBD) should satisfy in order to be categorized as meeting the requirements... | |
| IEC 61753-031-6:2014 contains the minimum initial tests and measurement requirements and severities which a non-wavelength selective branching device (NWBD) should satisfy in order to be categorized as meeting the requirements... | |
| IEC 61753-041-2:2014 contains the minimum initial performance, test and measurement requirements and severities which a fibre optic non-connectorized OTDR reflecting device for monitoring point to point (PTP) or point to... | |
| IEC 61753-042-2:2014 contains the minimum initial performance, test and measurement requirements and severities which plug-pigtail style and plug-receptacle style OTDR reflecting devices need to satisfy in order to be categorized... | |
| IEC 61753-043-02:2022 specifies the test requirements for wavelength selective cords used in a controlled environment (category C) according to IEC 61753-1:2018, where the connectors already comply with the category C... | |
| IEC 61753-051-02:2022 contains the minimum initial test and measurement requirements and severities which plug-receptacle style single-mode fibre fixed optical attenuators need to satisfy in order to be categorized as meeting... | |
| IEC 61753-051-3: 2013 contains the minimum initial test and measurement requirements and severities which a fibre optic attenuator satisfies in order to be categorized as meeting the requirements of single-mode... | |
| IEC 61753-052-3:2016 contains the minimum initial test and measurement requirements and severities which a fibre optic attenuator satisfies in order to be categorised as meeting the requirements of single-mode fibre... | |
| Interpretation of subclause 19.8 | |
| Is a test specification standard for thyristor surge suppressor (TSS) components designed to limit overvoltages and divert surge currents by clipping and crowbarring actions. Such components are used in the... | |
| Is applicable to attenuation of wavegides and waveguides assemblies. The objective of the given test procedures is to characterize the attenuation. The contents of the corrigendum of July 2006 have... | |
| Is applicable to avalanche breakdown diodes (ABDs) which represent one type of surge protective device component (hereinafter referred to as SPDC) used in the design and construction of surge protective... | |
| Is applicable to devices for surge protection against indirect and direct effects of lightning or other transient overvoltages. These devices are packaged to be connected to 50/60 Hz a.c. and... | |
| Is applicable to devices for surge protection of telecommunications and signalling networks against indirect and direct effects of lightning or other transient overvoltages. The purpose of these SPDs is to... | |
| Is applicable to ultrasonic equipment designed for physiotherapy consisting of an ultrasonic transducer generating continuous or quasi-continuous wave ultrasonic energy in the frequency range 0,5 MHz to 5 MHz. This... | |
| Lays down requirements for the design qualification and type approval of terrestrial thin-film photovoltaic modules suitable for long-term operation in moderate open-air climates. | |
| Lists test methods applicable to liquid crystal display devices. Takes into account, wherever possible, the environmental test methods outlined in IEC 60068. Also includes visual inspection for both liquid crystal... | |
| Objective is to limit the number of possible primary failures occurring in the optical fibre cable in a specified installation to within values which are lower than or equal to... | |
| Provides a means for determining the cut-off frequencies for the dominant and higher order modes in waveguides of various types over the frequency range from 1 GHz to 27 GHz. | |
| Provides a normative equation for analytically deriving a set of data points or a curve of irradiance versus time of day for a synthetic solar day. | |
| Provides details of the tests necessary to verify conformance to all mandatory specifications given in IEC 61672-1:2002 for conventional sound level meters, integrating-averagin g sound level meters and integrating sound... | |
| Provides guidance on software life-cycle activities to achieve dependable software. The activities identified can be part of a dependability programme for a system or related to a product containing software. | |
| Provides mathematical expressions for reliability, availability, maintainability and maintenance support measures. - Non-repaired items and - repaired items with zero and non-zero time to restoration are considered separately in this... | |
| Provides numerical methods to complement graphical techniques in performing a goodness-of-fit test for Weibull distributed times to failure and gives an approximate procedure to obtain confidence intervals for the parameters... | |
| Provides procedures for calibrating single-mode optical time domain reflectometers (ODTRs). It only covers ODTR measurement errors and uncertainties. The ODTR must be equipped with a minimum feature set: programmable index... | |
| Provides procedures for calibrating single-mode optical time domain reflectometers (OTDR). It only covers OTDR measurement errors and uncertainties. This standard does not cover correction of the OTDR response. | |
| Provides rules for the designation of terminals of objects within a system for use in the electrotechnical and related areas. Applicable to all technical areas. | |
| Provides the minimum requirements and severities which a fibre optic connector terminated on multimode fibre must satisfy in order to be considered as meeting the IEC standard category C -... | |
| Providse a standard method of modeling ASICs in VHDL.This method is aimed at providing efficient, accurate,and tool independent simulation suitable for large chip-level designs typical of those which are based... | |
| Recommends procedures for the monitoring of energy-related photovoltaic (PV) system characteristics, and for the exchange and analysis of monitored data. The purpose is the assessment of the overall performance of... | |
| Relevant to lamps not covered elsewhere in the scope of existing IEC standards. This consolidated version consists of the second edition (2003) and its amendment 1 (2005). Therefore, no need... | |
| Since IEC 61675-2 was first published in 1998, further developments of single photon computer tomographs allow some of the tomographs to be operated in coincidence detection mode as well. To... | |
| Specifies a method for the determination of polychlorinated biphenyl (PCB) concentration in non-halogenated insulating liquids by high-resolution capillary column gas chromatography using an electron capture detector (ECD). Gives total PCB... | |
| Specifies a test method for the mechanical strength of cores made of magnetic oxides. This test method is suitable for most of the E-cores, ETD-cores and I-cores but other core... | |
| Specifies general characteristics, general test procedures, electrical, safety and environmental characteristics and the identification certificate for installed, portable or transportable assemblies intended to measure a) the direction of an X... | |
| Specifies general requirements and methods of measurement for equipment using infrared radiation as a carrier of information. | |
| Specifies marking codes for fixed inductors. Covers the inductance values and their tolerances as well as dates. | |
| Specifies marking codes for fixed inductors. | |
| Specifies mechanical tests, climatic tests and safety aspects for cabinets, racks, subracks and chassis as defined in the detail standards of IEC 60917 and IEC 60297 for indoor and outdoor... | |
| Specifies mechanical tests, climatic tests and safety aspects for cabinets, racks, subracks and chassis as defined in the standards of the IEC 60917 series and the IEC 60297 series for... | |
| Specifies parameters for a flow Doppler test object representing a blood vessel of known diameter at a certain depth in human tissue, carrying a steady flow. Establishes a flow Doppler... | |
| Specifies procedures to compare two observed - failure rates; - failure intensities; - rates/intensities of relevant events. The procedures are used to determine whether an apparent difference between the two... | |
| Specifies procedures to estimate the parameters of the power law model. It provides confidence intervals for the failure intensity, and prediction intervals for the times to future failures. It tests... | |
| Specifies requirements for combined performance measuring and monitoring devices that measure and monitor the electrical parameters within electrical distribution systems. These requirements also define the performance, in single and three-phase... | |
| Specifies requirements for equipment for measuring the earth resistance using an a.c. voltage | |
| Specifies requirements for equipment for measuring the insulation resistance of equipment and installations in the de-energized state. | |
| Specifies requirements for equipment for measuring the loop impedance between a phase conductor and the protective conductor or between a phase conductor and neutral or between two phase conductors by... | |
| Specifies requirements for equipment for measuring the resistance of earth conductors, protective earth conductors and conductors for equipotential bonding including their connections and terminals. | |
| Specifies requirements for insulation monitoring devices which permanently monitor the insulation resistance to earth of unearthed IT a.c. and d.c. systems, and for IT a.c. systems with galvanically connected d.c. | |
| Specifies requirements for measuring equipment applied to testing th e phase sequence in three-phase distribution systems. Indication of the phase sequence may be mechanical, visual and/or audible. | |
| Specifies requirements for measuring equipment applied to the testing of the effectiveness of protective measures by regular disconnections of residual current protective devices (RCD) in TT and TN systems. | |
| Specifies terminology and test methods for declaring the characteristics of positron emission tomographs. Positron emission tomographs detect the annihilation radiation of positron emitting radionuclides by coincidence detection. It is intended... | |
| Specifies terminology and test methods for describing the characteristics of Anger type rotational gamma camera single photon emission computed tomographs (SPECT), equipped with parallel hole collimators. As these systems are... | |
| Specifies the classification, general design requirements, performance characteristics and test procedures for in vivo counting systems for detecting trace amounts of radionuclides in the bodies of persons working in nuclear... | |
| Specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of EP-cores made of magnetic oxides and the dimensional limits for associated coil formers | |
| Specifies the general requirements for measuring and monitoring equipment for testing the electrical safety in low voltage distribution systems with nominal voltages up to 1000 V a.c. and 1500 V... | |
| Specifies the general requirements for test equipment designed for use in measuring the real-ear acoustical characteristics of hearing aids and describes the terminology used. The purpose of this International Standard... | |
| Specifies the main performance characteristics of instruments intended for measurement of airborne radon volume activity, their specific method of testing and documentation requirements. Is to be used with IEC 61577-1. | |
| Specifies the main performance characteristics of instruments intended for measurement of specific activity of beta-emitting radionuclides in foodstuffs, their methods of testing and documentation requirements. | |
| Specifies the main performance characteristics of instruments, intended for measurement of specific activity of gamma-emitting radionuclides in foodstuffs, their methods of testing and documentation requirements. | |
| Specifies the performance and some related constructional requirements of diagnostic dosimeters intended for the measurement of air Kerma, air Kerma length or air Kerma rate, in photon radiation fields used... | |
| Specifies the performance requirements of instruments as used in the non-invasive measurement of X-ray tube voltage up to 150 kV and the relevant compliance tests. Describes the method for calibration... | |
| Specifies the requirements for combined measuring equipment which combines into one piece of apparatus, several measuring functions or methods of testing, measuring or monitoring, some or all of which are... | |
| Specifies the requirements for insulation fault location systems which localize insulation faults in any part of the system in unearthed IT a.c. systems and unearthed IT a.c. systems with galvanically... | |
| Specifies the requirements for measuring equipment applied to the testing of the effectiveness of protective measures by regular disconnections of residual current protective devices (RCD) in TT, TN and IT... | |
| Specifies the tests for empty cabinets and subracks concerning electromagnetic shielding performance, in the frequency range of 30 MHz to 2 000 MHz. Ensures physical integrity and environmental performance of... | |
| Standard | |
| The aim of this standard is: - to establish a standard method of assessing the reliability of laser modules in order to minimize risks and to promote product development and... | |
| The common measuring conditions and methods, described in this standard, are used for the measurement of the performance characteristics of equipment having an audio bandwidth equal to approximately one-half of... | |
| The contents of the corrigendum 1 (2022-09) have been included in this copy. | |
| This Blank detail specification specifiess Liquid crystal display devices - Part 2-2: Matrix colour LCD modules | |
| This International Standard deals with all aspects of safety such as electrical, thermal and mechanical. This part 2-19 of IEC 61558 applies to stationary or portable, single-phase or poly-phase, air-cooled... | |
| This International Standard deals with safety aspects of power transformers, power supplies, reactors and similar products such as electrical, thermal and mechanical safety. This standard covers the following types of... | |
| This International Standard provides standard procedures for the calibration of optical fibre chromatic dispersion (CD) test sets. It also provides procedures to perform calibration checking on CD test sets whereby... | |
| This pack contains IEC 61558-2-10:2024 EXV and IEC 61558-2-10:2024 RLV. IEC 61558-2-10:2024 deals with the safety of separating transformers with high insulation level and separating transformers with output voltages exceeding... | |
| This pack contains IEC 61558-2-12:2024 EXV and IEC 61558-2-12:2024 RLV. IEC 61558-2-12:2024 deals with the safety of constant voltage transformers for general applications and power supply units for constant voltage... | |
| This pack contains IEC 61558-2-23:2024 EXV and IEC 61558-2-23:2024 RLV. IEC 61558-2-23:2024 deals with the safety of transformers for construction sites and power supply units incorporating transformers for construction sites. | |
| This pack contains IEC 61558-2-3:2023 EXV and IEC 61558-2-3:2023 RLV. This part of IEC 61558 deals with the safety of ignition transformers for gas and oil burners. Ignition transformers incorporating... | |
| This pack contains IEC 61558-2-5:2024 EXV and IEC 61558-2-5:2024 RLV. IEC 61558-2-5:2024 deals with the safety of shaver transformers, power supply units incorporating a shaver transformer, and shaver supply units. | |
| This pack contains IEC 61558-2-7:2023 EXV and IEC 61558-2-7:2023 RLV. IEC 61558-2-7:2023 deals with the safety of transformers for toys and power supply units incorporating transformers for toys. Transformers for... | |
| This pack contains IEC 61558-2-8:2024 EXV and IEC 61558-2-8:2024 RLV. IEC 61558-2-8:2024 deals with the safety of bell and chime transformers and power supply units incorporating bell and chime transformers. | |
| This pack contains IEC 61558-2-9:2024 EXV and IEC 61558-2-9:2024 RLV. IEC 61558-2-9:2024 deals with the safety of transformers for class III handlamps and power supply units incorporating transformers for class... | |
| This part 2 of IEC 61558 applies to associated power transformers for switch mode power supplies, single-phase or polyphase, air-cooled: separating transformers; isolating transformers; safety isolating transformers, 10 kVA for... | |
| This part 2 of IEC 61558 applies to stationary or portable, single-phase or polyphase, air-cooled isolating transformers, associated or otherwise. It has the status of a group safety publication in... | |
| This part 2 of IEC 61558 applies to stationary or portable, single-phase or polyphase, air-cooled safety isolating transformers, associated or otherwise. It has the status of a group safety publication... | |
| This part 2 of IEC 61558 applies to stationary or portable, single-phase or polyphase, air-cooled separating transformers, associated or not. It has the status of a group safety publication in... | |
| This part 2 of IEC 61558 applies to transformers for toys having a rated supply voltage not exceeding 250 V a.c., a rated frequency of 50/60 Hz, a rated output... | |
| This part 2 of IEC 61558 is intended to be used in conjunction with IEC 61558-1. This international standard deals with all aspects of safety such as electrical, thermal and... | |
| This part 2-15 of IEC 61558 applies to stationary, single-phase or polyphase, air-cooled (natural or forced) isolating transformers for the supply of group II medical locations, designed to be permanently... | |
| This part 2-5 of IEC 61558 applies to shaver supply units, embodying one or more socket-outlets and a single phase air cooled isolating transformer. It has the status of a... | |
| This Part 2-9 of IEC 61558 applies to stationary or portable single-phase air-cooled (natural or forced) associated safety isolating transformers for class III handlamps for tungsten filament lamps, having a... | |
| This part of IEC 61557 specifies the general requirements for measuring and monitoring equipment for testing the electrical safety in low voltage distribution systems with nominal voltages up to 1... | |
| This part of IEC 61557 specifies the requirements applicable to equipment for measuring the insulation resistance of equipment and installations in the de-energized state. This second edition cancels and replaces... | |
| This part of IEC 61557 specifies the requirements applicable to equipment for measuring the loop impedance between a phase conductor and the protective conductor or between a phase conductor and... | |
| This part of IEC 61557 specifies the requirements applicable to equipment for measuring the resistance of earth conductors, protective earth conductors and conductors for equipotential bonding, including their connections and... | |
| This part of IEC 61557 specifies the requirements for equipment for measuring earth resistance using an a.c. voltage. This second edition cancels and replaces the first edition published in 1997. | |
| This part of IEC 61557 specifies the requirements for insulation monitoring devices (IMD) which permanently monitor the insulation resistance to earth of unearthed IT a.c. systems, for IT a.c. systems... | |
| This part of IEC 61557 specifies the requirements for measuring equipment applied to testing the phase sequence in three-phase distribution systems. Indication of the phase sequence may be mechanical, visual... | |
| This part of IEC 61557 specifies the requirements for measuring equipment that combines several measuring functions or methods of testing, measuring or monitoring, that are in accordance with the respective... | |
| This part of IEC 61558 applies to stationary or portable, single-phase or poly-phase, air-cooled (natural or forced) general purpose small reactors, including alternating current, premagnetised and current compensated reactors, independent... | |
| This part of IEC 61558 applies to stationary or portable, single-phase or poly-phases, air-cooled control transformers associated or otherwise. It has the status of a group safety publication in accordance... | |
| This part of IEC 61558 deals with safety aspects of control transformers and power supplies incorporating control transformers such as electrical, thermal and mechanical safety This second edition cancels and... | |
| This part of IEC 61558 deals with safety aspects of separating transformers and power supplies incorporating separating transformers such as electrical, thermal and mechanical safety. This second edition cancels and... | |
| This part of IEC 61558 deals with safety aspects of transformers for toys and power supplies incorporating transformers for toys such as electrical, thermal and mechanical safety. This second edition... | |
| This part of IEC 61558 deals with the safety of ignition transformers for gas and oil burners. Ignition transformers incorporating electronic circuits are also covered by this document. This third... | |
| This part of IEC 61643 is applicable to devices for surge protection against indirect and direct effects of lightning or other transient overvoltages. These devices are packaged to be connected... | |
| This part of IEC 61753 defines B/2 performance levels which a singlemode connector/cable assembly must satisfy in order to be categorised as meeting the IEC standard, Category O - Uncontrolled... | |
| This part of IEC 61753 defines C/3 minimum initial test and measurement requirements and severities which a single-mode connector/cable assembly must satisfy in order to be categorized as meeting the... | |
| This set of packages provides a standard for the declaration of most frequently used real and complex elementary functions required for numerically oriented modeling applications. Use of these packages with... | |
| This standard is based on IEEE Std 1076. It describes the Very High Speed Integrated Circuit (VHSIC) Hardware Description Language (VHDL) | |
| This standard specifies : - methods of measurement and characterization of the output performance of ultrasonic physiotherapy equipment based on reference testing methods; - characteristics to be declared by manufacturers... | |
| This standard supports the synthesis and verification of hardware designs, by defining vector types for representing signed or unsigned integer values and providing standard interpretations of widely used scalar VHDL... |
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