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GB/T 12192-2017Methods of measurement for transmitters employing F3E or G3E emissions used in the mobile services (English PDF)

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

Level / Type

National · Recommended

Issue date

December 29, 2017

Implementation date

July 1, 2018

Scope

GB/T 12192-2017 (Methods of measurement for transmitters employing F3E or G3E emissions used in the mobile services) is available as an English-translated PDF.

GB/T 12192-2017 — This standard specifies the performance, terminology and definitions, measurement conditions and measurement methods for mobile communications FM transmitters (hereinafter referred to as transmitters).

This standard applies to the operating frequency of 25MHz ~ 1000MHz, transmission of single-channel voice and other types of signals, the audio bandwidth is not super 10kHz mobile communications FM transmitter.

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Document preview — GB/T 12192-2017

National Standard of the People's Republic of China

ICS: 33.060.20
Classification: M 36

Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

Foreword
1 Scope
2 Normative references
3 Terms and Definitions, Abbreviations
3.1 Terms and Definitions
3.2 Abbreviations
4 Standard Test Condition
4.1 Working Conditions
4.2 Standard conditions for basic power supply
4.3 Standard atmospheric conditions
4.4 Standard day working cycle condition
5 Supplementary test conditions
5.1 Transmitter Input Signal Configuration, Modulation Limits, and Pre-emphasis
5.2 Output Signal Measurement Configuration for Transmitters with Antenna Ports Connected
5.3 Output Signal Measurement Configuration for a Transmitter with a Monolithic Antenna
5.4 Audio Band Limits
5.5 Tested Device Interface Condition
5.6 Radiation Measurement Condition
6 Requirements for measuring equipment
7 Frequency error
7.1 Overview
7.2 Measurement Method
8 Output carrier power
8.1 Overview
8.2 Measurement Method
9 Radiated carrier power
9.1 Average radiation carrier power
9.2 Maximum Effective Radiated Carrier Power
10 Scattering frequency components
10.1 Overview
10.2 Measurement method for transmitters with antenna ports
10.3 Measurement method for a transmitter with a self-contained antenna
11 Spurious noise
11.1 Overview
11.2 Measurement Methods for Transmitters with Connected Antenna Ports
11.3 Measurement Method for Transmitters with Monolithic Antennas
12 Adjacent channel power
12.1 Overview
12.2 Measurement Methods Using a Power Measuring Receiver
12.3 Measurement Methods Using Non-Digitally Stored Spectrum Analyzers
12.4 Measurement Methods Using Digitally Stored Spectrum Analyzers
13 Input Power and Total Efficiency
13.1 Input Power
13.2 Overall efficiency
14 Intermodulation conversion loss between transmitters (TIMCL)
14.1 Overview
14.2 Measurement method for transmitters with antenna ports connected
14.3 Measurement method for a transmitter with a self-contained antenna
15 Modulation Characteristics
15.1 Overview
15.2 Measurement Method
15.3 Expression of results
16 Modulation sensitivity
16.1 Overview
16.2 Measurement Method
17 Total distortion factor
17.1 The total distortion coefficient of an audio sine wave
17.2 The Total Distortion Factor of Two Audio Sine Waves
18 Relative audio intermodulation product level
18.1 Overview
18.2 Measurement Method
18.3 Results Representation
19 Compressor Characteristics
19.1 Compressor Total Amplitude Characteristics
19.2 Compressor Startup and Recovery Time
20 Modulation limit
20.1 Overview
20.2 Measurement Method
20.3 Result Expression
21 Remaining modulation
21.1 Remaining FM
21.2 Remaining AM
22 Transmitter startup time
22.1 Overview
22.2 Transmitter carrier startup time
22.3 Transmitter frequency conversion time
Appendix A (Normative) Test Site Usage Guide
A.1 Overview
A.2 Open Field (OATS)
A.3 Low Reflectance Test Site (LRTS)
A.4 Anechoic Chamber (AC)
Appendix B (Normative Appendix) Recommended Features of Measuring Equipment
B.1 Frequency Deviation and Modulation Depth Measurers
B.2 True RMS Voltage Table
B.3 distortion factor and SINAD meter
B.4 frequency measuring instrument
B.5 Audio band limiting filter
B.6 Standard Test Receiver
B.7 Power Measurement Receiver
B.8 Spectrum Analyzer
Appendix C (Informative Appendix) Example of Transmission Line Impedance Stabilization Network
C.1 Introduction
C.2 Measurement method of interference voltage
Figure 1 Measurement configuration for input signal
Figure 2 Output signal configuration with a self-contained antenna transmitter relative measurement
Figure 3 Measurement configuration of a stray frequency component of a transmitter with an antenna port connected
Figure 4 Measurement configuration with spurious noise connected to antenna port transmitters (using test receiver)
Figure 5 Measurement configuration with spurious noise connected to antenna port transmitters (using a spectrum analyzer)
Figure 6 Measurement configuration of spurious noise with a fully-armed antenna transmitter (using a test receiver)
Figure 7 Measurement configuration of spurious noise with monolithic antenna transmitters (using a spectrum analyzer)
Figure 8 Measurement of adjacent channel power configuration (using a power measurement receiver)
Figure 9 Measurement of adjacent channel power configuration (using a spectrum analyzer)
Figure 10 Measurement configuration of intermodulation conversion loss between transmitters with connected antenna ports (using circulators and transmission line extenders)
Figure 11 Measurement configuration of intermodulation conversion loss between transmitters with connected antenna ports (using resistive or capacitive couplers)
Figure 12 Measurement configuration of intermodulation conversion loss between transmitters with self-contained antennas (using circulators and transmission line extenders)
Figure 13 Measurement configuration of intermodulation conversion loss between transmitters with self-contained antennas (using resistive or capacitive couplers)
Figure 14 Measurement configuration for modulation characteristics
Figure 15 Measurement configuration for relative audio intermodulation product levels
Figure 16 Measurement configuration for compressor characteristics
Figure 17 Measurement setup for transmitter start-up time
Figure A.1 Measurement configuration for open field RF emissions
Figure A.2 Measurement configuration for open field RF reception
Figure A.3 3m site size 38 in the grid
Figure A.4 LRTS RF emission measurement configuration using radio wave absorbers
Figure A.5 LRTS RF Receive Measurement Configuration Using Radio Wave Absorbers
Figure A.6 Ground reflected wave suppression
Figure A.7 Higher position to reduce ground reflections
Figure A.8 Example of anechoic chamber
Figure C.1 Transmission line impedance stabilization network (also called simulated transmission network)
Figure C.2 Interference voltage vector diagram
Figure C.3 Example of transmission line impedance stabilization network
Table 1 Voltage of Each Cell
Table 2 Standard Test Voltages for Different Operating Currents
Table 3 Standard atmospheric conditions for arbitration test
Table 4 Channel spacing and specified bandwidth and their respective frequency increments deltaf
Table 5 Weighted characteristic values
Table A.1 Comparison of the advantages and disadvantages of the test site
Table A.2 3m test site characteristics
Table A.3 30m test site characteristics
Table A.4 Characteristics of 5m×5m×10m anechoic chambers
Table B.1 Measures noise filter characteristics
Table B.2 Power measurement receiver selectivity requirements
Table C.1 Figure C.3 corresponding resistance, attenuation, and impedance values

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard supersedes GB/T 12192-1990 "Measuring Method for Mobile Communication FM Radio Transmitter".

Compared with GB/T 12192-1990, the main technical changes except editorial modification are as follows.

---Modified the standard name;

--- Increased normative references (see Chapter 2);

--- Modify the measurement method of radiation carrier power (see Chapter 9, Chapter 8 of the 1990 edition);

--- Modified method of measuring the frequency components of stray scattering (see 10.2 and 10.3, 9.2, 9.3 and 9.4 of the 1990 edition);

--- Modified method of measurement of adjacent channel power (see 12.2, 12.3 and 12.4, 1990 version 11.2 and 11.3);

--- Modify the measurement method of intermodulation conversion loss between transmitters (see Chapter 14, Chapter 13 of the 1990 edition);

--- Modify the measurement method of the total distortion coefficient (see Chapter 17, Chapter 17 of the 1990 edition);

--- Modify the measuring method of transmitter start-up time (see Chapter 22, Chapter 21 of the 1990 edition);

--- Modify the recommended characteristics of the spectrum analyzer in the Appendix (see B.8, A5 of the 1990 edition);

--- Added measurement method for compressor characteristics (see Chapter 19);

--- Adds a normative appendix -- Guidelines for the use of test sites (see Appendix A);

--- Removed the method of measuring the frequency offset of transmission at high modulation frequencies (see Chapter 15 of the 1990 edition).

This standard uses the redrafted method to refer to IEC 60489-2:1999 "Measuring methods for wireless equipment in mobile services Part 2. A3E, F3E, or G3E Transmitter Transmitters, is not equivalent to IEC 60489-2:1999.

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

This standard is under the jurisdiction of China Electronics Standardization Institute.

This standard is mainly drafted by. China Electronics Technology Group Corporation Seventh Institute.

Participated in the drafting of this standard. Guangdong Radio Monitoring Station, Mobile Communications National Engineering Research Center, Keli Communications Communication Co., Ltd.

Company, Motorola (China) Electronics Co., Ltd., Kenwood Co., Ltd., Wetex Communications (Suzhou) Co., Ltd., Shenzhen Youxun Technology Co., Ltd.

Exhibition Co., Ltd., Fujian Beifeng Telecommunications Technology Co., Ltd.

1 Scope

This standard specifies the performance, terminology and definitions, measurement conditions and measurement methods for mobile communications FM transmitters (hereinafter referred to as transmitters).

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article Pieces. For undated references, the latest version (including all amendments) applies to this document.

GB/T 12193-2017 mobile communication FM receiver measurement method

3 Terms and Definitions, Abbreviations

3.1 Terms and Definitions

The following terms and definitions apply to this document.

3.1.1

Input analog network inputsimulationnetwork A weighted network (see Figure 1) that changes the output characteristics of an audio signal generator to simulate the actual required amplitude-frequency characteristics of the device under test input signal. Aiming at simulating the input signal of the actual required amplitude-frequency characteristics of the device under test, changing the output characteristics of the audio signal generator Weighted network.

3.1.2

Rated RF output power ratedradio-frequencyoutputpower the power that should be obtained when the transmitter is connected to the specified load under the specified operating conditions.

3.1.3

Maximum allowed frequency deviation maximumpermissiblefrequencydeviation for a particular type of service, the value of the peak frequency offset that should be limited by a consistent agreement.

3.1.4

Compressor A device that has a non-linear gain characteristic that compresses the dynamic range of the audio input amplitude of the transmitter.

3.1.5

Standard input signal voltage Generates the input signal voltage required for standard test modulation.

3.2 Abbreviations

The following abbreviations apply to this document.

AC. Anechoic Chamber LRTS. LowReflectionTestSite

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 58 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 12193-2017Methods of measurement for receivers employing F3E or G3E emission used in the mobile services

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