GB/T 9389-1988Transmission of audio and/or video and related signals using infra-red radiation - Part 1: General (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

Drafting.

The following sections have been published.

---Part 1: General Provisions this document replaces GB/T 9389-1988 "Sound Transmission by Infrared Radiation". Compared with GB/T 9389-1988, the main differences are structural adjustments and...

Aside from editorial changes, the main technical changes are as follows.

---The scope of this document has been changed to "free-radiation infrared signal transmission systems" (see Chapter 1, beginning of the 1988 edition);

---The following have been removed. "Purpose", "Wavelength of Infrared Radiation", "Modulation", "Subcarrier Frequency", "Frequency Offset", "Pre-emphasis of Audio Signal", and "Polarity" (see [link]).

(Chapters 2-14 of the 1988 edition)

---Added "Terms, Definitions and Abbreviations" (see Chapter 3);

---Added "Terminology Explanation and General Information" (see Chapter 4);

---Added "Measurement Conditions" (see Chapter 5);

---Added "Specified Characteristics and Measurement Methods" (see Chapter 6);

---Added "Performance Requirements and Recommendations" (see Chapter 7);

---A "Systems and Equipment Classification" has been added (see Chapter 8);

---Added "Marking and Specification Content" (see Chapter 9).

This document is modified to adopt IEC 61603-1:1997 "Transmission of audio and/or video and related signals by means of infrared radiation - Part 1.

General Principles.

Compared with IEC 61603-1:1997, this document has undergone the following structural adjustments.

---Chapter 1 corresponds to IEC 61603-1:1997, section 1.1;

---Chapter 2 corresponds to section 1.2 of IEC 61603-1:1997;

---Chapters 4 through 9 correspond to Chapters 2 through 7 of IEC 61603-1:1997, respectively;

---Table 1 corresponds to Table 2 of IEC 61603-1:1997, and Table 2 corresponds to Table 1 of IEC 61603-1:1997.

The technical differences between this document and IEC 61603-1:1997, and the reasons therefor, are as follows.

---IEC 60065 (see 4.8) has been replaced with the normatively referenced GB 4943.1-2022 to adapt to my country's technical conditions and add...

Operability;

---IEC 60068 (Parts 2 to 6) (see 5.1) has been replaced with the normatively referenced GB/T 2423 (all parts) to...

Adapt to my country's technological conditions and increase operability;

---IEC 60574-4 (see 5.3) and IEC 60268-15 (see Figures 1 and 5.3) have been replaced by the normatively referenced GB/T 14197-2012.

7.4), to adapt to my country's technological conditions and increase operability;

---IEC 60268-1 (see 5.4) has been replaced with the normatively referenced GB/T 12060.1-2017 to adapt to my country's technical conditions.

Increase operability;

---IEC 60825-1 (see 7.1) has been replaced with the normatively referenced GB/T 7247.1-2024 to adapt to my country's technical conditions.

Increase operability;

---Added normative references to IEC 61603 (all parts) (see 4.5.1, 4.6.2), and removed normative references to IEC 61603.

60574-3 (see IEC 61603-1:1997, section 7.4) is used to adapt to my country's technical conditions and increase operability;

---IEC 60417 (see 9.1) has been replaced with the normatively referenced GB/T 5465 (all parts) to adapt to my country's technical conditions.

Increase operability;

---ISO 7000 (see 9.1) has been replaced with the normatively referenced GB/T 16273.1-2008 to adapt to my country's technical conditions and increase...

Increase operability.

---Includes the technical errata of IEC 61603-1:1997/COR1.1997, with the relevant clauses located in the outer margin.

It was marked with a vertical double line (||);

---IEV845-01-30 (see 4.3.5) has been replaced with GB/T 2900.65-2023 (referenced for informational purposes).

---IEC 61147 has been replaced with IEC 61920:2004 (see 4.5.5.2), which is used for informational purposes.

---Appendix A has removed the content related to Parts 4 and 5 of IEC 61603 (all parts) that have not yet been published, and has also removed...

A.6 "References".

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.

This document is under the jurisdiction of the National Technical Committee on Standardization of Audio, Video and Multimedia Systems and Equipment (SAC/TC242).

Introduction

GB/T 9389 "Transmission of audio and/or video and related signals using infrared radiation" is proposed to consist of the following parts.

---Part 1: General Principles. The aim is to establish a unified and universal technical and performance framework for free-radiation infrared signal transmission systems.

Using infrared radiation to transmit audio and/or video and Related Signals Part 1: General Principles

1 Scope

This document specifies the use of diffuse infrared radiation or wide-beam infrared radiation as the information carrier [primarily carrying audio and/or video information].

The requirements for system components [including the number and control data related to audio and video equipment] are described, along with the corresponding measurement methods.

This document applies to free-radiation infrared signal transmission systems, with indoor spaces and signal transmission for user groups of varying sizes being typical applications.

Scene.

This document does not apply to security systems, industrial applications (such as measurement and control automation devices), traffic management systems, or assistive systems for the disabled.

This document covers both cable-based infrared transmission systems and narrow-beam infrared systems, but narrow-beam infrared systems may interfere with the systems to which this document applies.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 2423 (all parts) Environmental testing [IEC 60068-2 (all parts)] GB 4943.1-2022 Audio-visual, information technology and communication technology equipment – Part 1: Safety requirements (IEC 62368-1.

2018, MOD)

GB/T 5465 (all parts) Graphical symbols for electrical equipment (IEC 60417) GB/T 7247.1-2024 Safety of laser products - Part 1: Equipment classification and requirements (IEC 60825-1:2014, IDT) GB/T 12060.1-2017 Acoustic systems equipment – Part 1: Overview (IEC 60268-1:1985, MOD) GB/T 16273.1-2008 Graphical symbols for equipment – Part 1: General symbols (ISO 7000:2004, NEQ) IEC 61603 (all parts) - Transmission of audio and/or video and related signals using infrared radiation.

MOD)

3 Terms, Definitions and Abbreviations