IEC 61326-2-1:2020 PDF

Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 2-1: Particular requirements - Test configurations, operational conditions and performance criteria for sensitive test and measurement equipment for EMC unprotected applications

First page of standard IEC 61326-2-1:2020

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Title (English):

IEC 61326-2-1:2020

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 30
Publication date:: October 23, 2020
Edition:: IEC IS 61326 edition 3 version 1
ICS:: 17.220.20

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Description (English):

IEC 61326:2020 specifies more detailed test configurations, operational conditions and performance criteria for equipment with test and measurement circuits (internal or, external to the equipment, or both) that are not EMC protected for operational and/or functional reasons, as specified by the manufacturer. The manufacturer specifies the environment for which the product is intended to be used and selects the appropriate test level specifications of IEC 61326-1:2020.

Technical details

Technical committee: SC 65A - System aspects
SKU: IEC 61326-2-1:2020

Abstract

Overview

IEC 61326-2-1:2020 (Edition 3.0) is a Part 2 supplement to IEC 61326-1:2020 that defines EMC test configurations, operational conditions and performance criteria specifically for sensitive test and measurement equipment that is intentionally EMC unprotected for functional reasons. It applies to instruments with internal or external test and measurement circuits - for example oscilloscopes, logic analysers, spectrum/network analysers, analogue instruments, digital multimeters (DMM) and board test systems. The manufacturer is responsible for specifying the intended environment and selecting the appropriate test levels from IEC 61326-1:2020.

Key Topics and Requirements

Test configuration and EUT setup
- Test and measurement input ports should be capped/covered and terminated with appropriate impedance unless doing so would create an unrepresentative operating condition.
- Output ports not required for essential functions should be capped/terminated.
- Electrostatic discharge (ESD) is applied to housing shields or connector shields - not to inner pins of shielded connectors.
Operational conditions during testing
- Both battery and AC mains modes must be tested when both are available.
- Specific guidance for common instruments:
  - Oscilloscopes: maximum sweep speed, maximum sensitivity, continuous acquisition.
  - Logic analysers: data analysis modes for emissions, continuous acquisition for immunity.
  - DMMs: peak detect, maximum sensitivity (auto-range), continuous acquisition.
- For other equipment, representative worst‑case normal-operation modes are selected.
Immunity and performance criteria
- Applies IEC 61326-1 immunity tests with specified additions.
- For transient electromagnetic phenomena assigned to performance criterion B, temporary self-recovering degradation is allowed; manufacturer must document any self-recovery times greater than 10 s. No change of operating state or loss of stored data is permitted.
Documentation and user instructions
- Manufacturers must inform users that connecting test leads/probes may reduce immunity and provide guidance to minimize disturbance impact.

Applications and Who Uses It

Intended for manufacturers, test engineers and EMC compliance teams working with laboratory and production test instruments that are sensitive by design and not EMC-hardened.
Useful for designers of oscilloscopes, logic analysers, DMMs and board test systems; test laboratories developing EMC test plans for unprotected measurement equipment; and procurement/specification engineers assessing suitability of sensitive instruments for specific electromagnetic environments.

Related Standards

IEC 61326-1:2020 - General EMC requirements for measurement, control and laboratory equipment (to be used in conjunction with Part 2-1).
IEC 60050-161 - Electrotechnical vocabulary (terms and definitions referenced).

Keywords: IEC 61326-2-1, EMC requirements, test configurations, immunity testing, emissions, sensitive test and measurement equipment, oscilloscopes, logic analysers, DMM, manufacturer instructions.

Related standards

Standards mentioned in the description

Abstract

Overview

Key Topics and Requirements

Test configuration and EUT setup
- Test and measurement input ports should be capped/covered and terminated with appropriate impedance unless doing so would create an unrepresentative operating condition.
- Output ports not required for essential functions should be capped/terminated.
- Electrostatic discharge (ESD) is applied to housing shields or connector shields - not to inner pins of shielded connectors.
Operational conditions during testing
- Both battery and AC mains modes must be tested when both are available.
- Specific guidance for common instruments:
  - Oscilloscopes: maximum sweep speed, maximum sensitivity, continuous acquisition.
  - Logic analysers: data analysis modes for emissions, continuous acquisition for immunity.
  - DMMs: peak detect, maximum sensitivity (auto-range), continuous acquisition.
- For other equipment, representative worst‑case normal-operation modes are selected.
Immunity and performance criteria
- Applies IEC 61326-1 immunity tests with specified additions.
- For transient electromagnetic phenomena assigned to performance criterion B, temporary self-recovering degradation is allowed; manufacturer must document any self-recovery times greater than 10 s. No change of operating state or loss of stored data is permitted.
Documentation and user instructions
- Manufacturers must inform users that connecting test leads/probes may reduce immunity and provide guidance to minimize disturbance impact.

Applications and Who Uses It

Intended for manufacturers, test engineers and EMC compliance teams working with laboratory and production test instruments that are sensitive by design and not EMC-hardened.
Useful for designers of oscilloscopes, logic analysers, DMMs and board test systems; test laboratories developing EMC test plans for unprotected measurement equipment; and procurement/specification engineers assessing suitability of sensitive instruments for specific electromagnetic environments.

Related Standards

IEC 61326-1:2020 - General EMC requirements for measurement, control and laboratory equipment (to be used in conjunction with Part 2-1).
IEC 60050-161 - Electrotechnical vocabulary (terms and definitions referenced).

Keywords: IEC 61326-2-1, EMC requirements, test configurations, immunity testing, emissions, sensitive test and measurement equipment, oscilloscopes, logic analysers, DMM, manufacturer instructions.

IEC 61326-2-1:2020 PDF

Technical details

Abstract

Overview

Key Topics and Requirements

Applications and Who Uses It

Related Standards

Related standards

Abstract

Overview

Key Topics and Requirements

Applications and Who Uses It

Related Standards

Related standards

Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 1: General require…

Electrical equipment for measurement, control and laboratory use. EMC requirements - General requirements

Amendment 2 - International Electrotechnical Vocabulary (IEV) - Part 161: Electromagnetic compatibility

Electrical equipment for measurement, control and laboratory use - EMC requirements - Part 2-1: Particular re…