GB/T 6934-2017 English PDF

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GB/T 6934-2017: Methods of measurement of electrical performance for short wave single-sideband receivers
Status: Valid

GB/T 6934: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 6934-2017	599	Add to Cart	5 days	Methods of measurement of electrical performance for short wave single-sideband receivers	Valid
GB/T 6934-1995	879	Add to Cart	4 days	Methods of measurement of electrical performance for short wave single-sideband receivers	Obsolete
GB 6934-1986	799	Add to Cart	5 days	Methods of measurement of electrical performance for short wave single-sideband receivers	Obsolete

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Basic data

Standard ID: GB/T 6934-2017 (GB/T6934-2017)
Description (Translated English): Methods of measurement of electrical performance for short wave single-sideband receivers
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: M36
Classification of International Standard: 33.060.20
Word Count Estimation: 30,327
Date of Issue: 2017-05-12
Date of Implementation: 2017-12-01
Older Standard (superseded by this standard): GB/T 6934-1995
Quoted Standard: GB/T 2421.1
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the terms and definitions of shortwave single sideband receivers (hereinafter referred to as receivers) for electrical performance measurement, standard measurement conditions and measurement methods. This standard applies to receivers that do not have a complete antenna with a full carrier (H3E), a reduced carrier (R3E) and a suppressed carrier (J3E) with an audio bandwidth of no more than 10 kHz, including a receiver with a separate sideband (B8E); Also applies to receivers that are compatible with receiving sideband (A3E), equal amplitude (A1A, A1B).

GB/T 6934-2017: Methods of measurement of electrical performance for short wave single-sideband receivers

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Methods of measurement of electrical performance for short wave single-sideband receivers ICS 33.060.20 M36 National Standards of People's Republic of China Replace GB/T 6934-1995 Measurement of Electrical Performance of Shortwave Single Sideband Receiver 2017-05-12 released 2017-12-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released Directory Preface III 1 Scope 1 2 normative reference document 1 3 Terms and definitions 1 4 standard measurement conditions 2 Standard atmospheric conditions for measurement 2 4.2 Standard power supply conditions 2 5 supplementary measurement conditions 3 5.1 Input signal source 3 5.2 Connection of measuring equipment 4 5.3 Characteristics of measuring equipment 4 5.4 Measuring workplace conditions 4 6 electrical performance test instructions and measurement methods 4 6.1 General 4 6.2 Frequency error 5 6.3 Frequency stability 5 6.4 Reference sensitivity 6 6.5 Frequency 6 6.6 Noise figure 7 6.7 large signal to noise ratio 8 6.8 Audio response 8 6.9 sideband linear channeling 9 6.10 Group delay (envelope delay distortion) 9 6.11 Response delay 10 6.12 IF Selectivity 11 6.13 Reverse radiation level 11 6.14 Local oscillator phase noise 11 6.15 Total distortion factor 12 6.16 Enter the standing wave ratio 12 6.17 Relative audio intermodulation (inband intermodulation) 13 6.18 sideband non-linear channeling 13 6.19 out-of-band intermodulation 14 6.20 proximity signal selectivity 15 6.21 Blocking 15 6.22 reciprocal mixing 16 6.23 reciprocating mixing ratio 16 6.24 IF suppression ratio 16 6.25 Lens suppression ratio 17 6.26 Stray frequency rejection ratio 17 6.27 Combination sound 18 6.28 Automatic Gain Control Characteristics 18 6.29 Automatic Gain Response Time 18 6.30 RF gain control 19 6.31 Volume control or line level adjustment 19 6.32 phase jitter 20 Appendix A (Normative Appendix) Hybrid Network 21 Appendix B (normative) Characteristics of measuring instruments and sources Appendix C (informative) Measurement of maximum frequency error Appendix D (normative appendix) Measurement of intermodulation input intercept point values

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 6934-1995 "Shortwave single sideband receiver electrical performance measurement method". Compared with GB/T 6934-1995, In addition to editorial changes to the main technical content changes are as follows. - the contents of the reference output level are modified and the reference output level at the time of measurement is specified (see 3.2); --- Replace the normative reference file with the latest version (see 4.1); - the contents of the standard atmospheric conditions for the standard conditions, the standard conditions for the measurement and testing of the standard conditions in the standard measurement conditions (see.1995 Version 4.1.1 and 4.1.2); - the contents of the "audio band limitation" have been deleted (see 5.3 of.1995); - delete the contents of the "True RMS Voltmeter" "Distortion Factor Meter or SINA Table" "Selective Measurement Equipment" (see 1995, 5.4.1, 5.4.2 and 5.4.3); (See 6.5), noise figure (see 6.6), response delay (see 6.11), reverse radiation level (see 6.13), local oscillator Phase noise (see 6.14), input standing wave ratio (see 6.16), reciprocal mixing suppression ratio (see 6.23), automatic gain response time (See 6.29) and other eight electrical performance measurement methods; - the contents of the "transmission spurious component" (see 6.23 of.1995); - modified the contents of the definition and measurement methods in phase jitter (see 6.32); - Appendix E was deleted. This standard is proposed by the Ministry of Industry and Information Technology of the People's Republic of China. This standard is under the jurisdiction of China Electronic Technology Standardization Research Institute. The drafting unit of this standard. Tongfang Electronic Technology Co., Ltd. The main drafters of this standard. Peng Zhihua, Li Guobei, Song Mei, Kang Wenchen. This standard replaced the previous version of the standard release. --- GB 6934-1986, GB/T 6934-1995. Measurement of Electrical Performance of Shortwave Single Sideband Receiver

1 Scope

This standard specifies the short term single sideband receiver (hereinafter referred to as receiver) electrical performance measurement terms and definitions, the standard measurement conditions and measurement Quantity method. This standard applies to a receiver without a complete antenna, the audio bandwidth of not more than 10kHz full carrier (H3E), reduce the carrier (R3E) and suppression carrier (J3E), including the receiver of the independent sideband (B8E); also suitable for reception of dual-sideband (A3E) (A1A, A1B) receiver. Note 1. This standard only provides the measurement method of electrical performance and its relevant conditions, measurement items and performance indicators specified by the product specifications. Note 2. For special receivers, the definition and measurement methods of electrical performance items not specified in this standard shall be negotiated by both parties.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. GB/T 2421.1 Environmental and Environmental Testing of Electrical and Electronic Products

3 terms and definitions

The following terms and definitions apply to this document. 3.1 Audio test load audio-frequencytestload Instead of short-wave single-sideband receivers working properly when connected to the load impedance of the impedance network to simulate the normal load and the normal use of the cable impedance. Note. The impedance network is specified by the manufacturer and is usually composed of a single pure resistor. 3.2 Reference output level referenceoutputlevel Short-wave single-sideband receiver in the specified working conditions, the connection of the specified audio test load when the useful output power, it is used to do test The amount of the reference level. Note. When measuring, it is generally specified that the audio test load is 600Ω and the reference output level is 0dBm. There are other specific requirements when the reference output level is produced by the production Product standards to make provision. 3.3 Shinano SINAD The audio test load, the standard test modulation produces the useful audio signal, the noise and distortion of the output power sum, and the standard test modulation The resulting noise, distortion of the power and ratio. SINAD = SND ND (1) Where. S --- standard test modulation generated by the useful audio signal; N --- standard test modulation noise; ......

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