GB/T 13978-2008Digital multimeters (English PDF)

Foreword

This standard replaces GB/T 13978-1992 "Digital Multimeter General technical requirements." The standards are compared with the GB/T 13978-1992 major changes are.

--- Comprehensively revised the inspection rules and compliance criteria.

--- Revised logo, packaging, storage requirements.

--- Canceled a standard feature of test items in Table 7 to Appendix C test items and replace substandard classification.

This standard appendix A, Appendices C and D are normative appendix, Appendix B is an informative annex.

Since the implementation of this standard, the original national standard GB/T 13978-1992 repealed. The standard proposed by China Machinery Industry Federation.

1 Scope

This standard defines the digital multimeter (hereinafter referred to as the instrument) terms, normative references, specifies the technical requirements, test methods And inspection rules, gives the product logo, packaging and storage of some of the basic requirements.

This standard applies to various categories of digital multimeter. Also applies to a variety of data processing and information control equipment and automatic test system Or individual instrument system designed for DC voltage, AC voltage, DC current, AC current and resistance digitize analog measurement Various analog.

This standard also applies to the same type as the basis to measure the voltage of both other parameters (electric or non-electric) is a digital measuring instruments and their combination with Attachment, or a combination thereof.

This standard also applies to digital measurement of digital and analog multimeters or graphic combination, a display portion.

This standard does not apply to analog multimeters and other non-digital indicating instrument.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 191-2008 Packaging - Pictorial signs (ISO 780:1997, MOD)

GB/T 2423.1-2001 Environmental testing for electric and electronic products - Part 1: Test methods Tests A. Cold (idt IEC 60068-2-1:1990)

GB/T 2423.2-2001 Environmental testing for electric and electronic products - Part 2: Test methods Test B. high temperature (idt IEC 60068-2-2. 1974)

GB/T 2423.4-1993 electric and electronic products environmental testing procedures Test Db. Damp heat test, cyclic (idt IEC 60068-2-30. 1980)

GB/T 2829-2002 periodic inspection Sampling procedures and tables (suitable for process stability test)

GB 4208-1993 housing protection (IP Code) (eqv IEC 60529. 1989)

GB 4793.1-2007 measurement, control and laboratory safety requirements for electrical equipment - Part 1: General requirements

GB 9254-1998 IT equipment Radio disturbance characteristics - Limits and methods of measurement

GB 11463-1989 reliability tests for electronic measuring instruments

GB/T 17626.1-2006 Electromagnetic compatibility - Testing and measurement techniques - Overview of immunity tests (IEC 61000-4-1:2000, IDT)

GB/T 17626.2-2006 Electromagnetic compatibility - Testing and measurement techniques - Electrostatic discharge immunity test (IEC 61000-4-2:2000, IDT)

GB/T 17626.3-2006 Electromagnetic compatibility - Testing and measurement techniques RFEMS test (IEC 61000-4-3:2000, IDT)

GB/T 17626.4-1998 Electromagnetic compatibility - Testing and measurement techniques - Electrical fast transient burst immunity test (idt IEC 61000-4-4:1995)

GB/T 17626.5-1999 Electromagnetic compatibility - Testing and measurement techniques - Surge (impact) immunity test (idt IEC 61000-4-5:1995)

GB/T 17626.6-1998 Electromagnetic compatibility - Testing and measurement techniques - conducted disturbances induced by RF field immunity