GB/T 19954.2-2016Electromagnetic compatibility - Product family standard for audio, video, audio-visual and entertainment lighting control apparatus for professional use - Part 2: Immunity (English PDF)

Foreword

GB/T 19954 "Electromagnetic compatibility - Product family standard for audio, video,

audio-visual and entertainment lighting control apparatus for professional use"

includes the following two parts.

- Part 1. Emission;

- Part 2. Immunity.

This Part is Part 2 of GB/T 19954.

This Part is drafted in accordance with the rules given in GB/T 1.1-2009.

This Part replaces GB/T 19954.2-2005 "Electromagnetic compatibility - Product family

standard for audio, video, audio-visual and entertainment lighting control apparatus for

professional use - Part 2. Immunity".

Main changes in this Part compared with GB/T 19954.1-2005 are as follows.

- ADD the definition of screened-cable port in Clause 3;

- ADJUST the location of Clause 6 Immunity requirements, Clause 7 Test conditions

and Clause 8 Buyer/user documentations in this Part; ADJUST the clause and

article number accordingly;

- ADD additional information that shall be stated by the manufacturer in Clause 8

Buyer/user documentations;

- MODIFY the calibration and test method of BP1 type port's common-mode

immunity in Annex B;

- ADD Annex D Performance indicators for the objective evaluation of the immunity

test;

This Part is proposed by the 3rd Research Institute of China Electronics Technology

Group Corporation.

This Part is under the jurisdiction of the National Technical Committee on Radio

Interference of Standardization Administration of China (SAC/TC 79).

Drafting organizations of this Part. 3rd Research Institute of China Electronics

Technology Group Corporation, China Quality Certification Center, Nanjing Rongxiang

Test Equipment Co., Ltd.

Main drafters of this Part. Zhu Lin, Ding Shaohua, Shen Qixue, Lin Jingping, Xu Wei,

Electromagnetic compatibility - Product family

standard for audio, video, audio-visual and

entertainment lighting control apparatus for

professional use - Part 2. Immunity

1 Scope

This Part of GB/T 19554 specifies immunity test requirements, test signals,

performance criteria and test methods for apparatus, involving immunity to continuous

and transient, conducted and radiated electromagnetic disturbances, including

electrostatic discharge, which are the necessary electromagnetic compatibility

requirements.

This Part applies to audio, video, audio-visual and entertainment lighting control

apparatus for professional use as defined in Clause 3 and apparatus used in the

electromagnetic environment described in Clause 4, including the professional digital

apparatus defined in 3.5 and the components specified in 7.4.

This Part specifies that the disturbance signal frequency range is 0 Hz ~ 400 GHz, but

does not make the requirements for the entire frequency band.

Annex C provides relevant information on infrared emitters with wavelengths of 0.7 µm

to 1.6 µm.

This Part does not consider conditions of disturbance source or disturbed apparatus

failure.

The apparatus defined in 3.4, 3.5 and 3.6 may be operated in any form of power supply,

including.

- public low-voltage power grids;

- independent power grids with similar characteristics;

- DC power supplies for specific apparatus;

- built-in batteries of the apparatus;

- standby generators.

Some of the standards referenced in this Part may not apply to independent low-

voltage power grids.

Note 1. In special cases, for example, when portable transmitters are in use near the apparatus,

in addition to the specified limits, additional measurements may be carried out in order to

improve the electromagnetic immunity of the apparatus.

This Part does not apply to.

- consumer electronics products;

- specially designed security system apparatus;

- emission apparatus designed for wireless communications.

2 Normative references

The following referenced documents are indispensable for the application of this

document. For dated references, only the edition cited applies. For undated references,

the latest edition of the referenced document (including any amendments) applies.

GB/T 4365 Electrotechnical terminology - Electromagnetic compatibility

GB 9383 Sound and television broadcast receivers and associated equipment -

Immunity characteristics - Limits and methods of measurement

GB/T 12060.3 Sound system equipment - Part 3. Methods of measurement on

audio amplifiers

GB 17625.1 Electromagnetic compatibility - Limits - Limits for harmonic current

emissions (equipment input current <= 16 A per phase)

GB/T 17626.2 Electromagnetic compatibility (EMC) - Testing and measurement

techniques - Electrostatic discharge immunity test

GB/T 17626.3 Electromagnetic compatibility - Testing and measurement techniques

- Radiated radio-frequency electromagnetic field immunity test

GB/T 17626.4 Electromagnetic compatibility - Testing and measurement techniques

- Electrical fast transient/burst immunity test

GB/T 17626.5 Electromagnetic compatibility - Testing and measurement techniques

- Surge immunity test

GB/T 17626.6-2008 Electromagnetic compatibility - Testing and measurement

techniques - Immunity to conducted disturbances induced by radio-frequency fields

GB/T 17626.11 Electromagnetic compatibility - Testing and measurement

techniques - Voltage dips, short interruptions and voltage variations immunity tests

GB 17799.4 Electromagnetic compatibility (EMC) - Generic standards - Emission

standard for industrial environments

GB/Z 18039.1-2000 Electromagnetic compatibility - Environment - Classification of

electromagnetic environments

IEC 60268-1 Sound system equipment - Part 1. General

ITU-R 500-4 Method for the subjective assessment of the quality of television

pictures

ITU-R 562-3 Subjective assessment of sound quality - Section 10C - Audio -

Frequency characteristics of sound - Broadcasting signals

3 Terms and definitions

The following terms and definitions and those defined in GB/T 4365 are applicable to

this document.

3.1

electromagnetic compatibility; EMC

A capability of apparatus or system working normally in its electromagnetic

environment without causing any unbearable electromagnetic disturbance to anything

in its electromagnetic environment.

[GB/T 4365-2003, 161-01-07]

3.2

port

A special interface for the specific apparatus in an electromagnetic environment (see

Figure 1).

5 Disturbance phenomenon

This Part specifies the immunity requirements for the following disturbance

phenomenon (see Table 1).

1 Radio frequency electromagnetic field;

2 Electrostatic discharge;

3 Magnetic field;

Note. There are two tests, using the uniform field (3a) and the non-uniform field (3b).

This non-uniform field test is designed to measure the magnetic field that actually acts

on the exterior surface of the apparatus cabinet and the immunity to poor screening.

4 Electrical fast transient burst, common mode;

5 Audio common mode;

6 Radio frequency common mode;

7 Surge, line-line and line-earth;

8 Voltage drop;

9 Voltage interruption.

6 Immunity requirements

The apparatus included in the scope of this Part shall comply with the requirements of

this Part under a separate rated power supply. Some examples of power supplies are

listed in Clause 1.

Immunity requirements are shown in Table 1.

interruption

Functional

earth port

4 Fast pulse

group common

mode

2 kV peak value

common mode

GB/T