JJF 1286-2022 English PDF

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JJF 1286-2022: Calibration Specification for Wireless Channel Emulators
Status: Valid

JJF 1286: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1286-2022	1129	Add to Cart	7 days	Calibration Specification for Wireless Channel Emulators	Valid
JJF 1286-2011	1199	Add to Cart	5 days	Calibration specification for Wireless Channel Emulator	Obsolete
JJF 1286-1990	359	Add to Cart	3 days	O.T.N. for Secondary Standard of D.C Resistance	Obsolete

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Basic data

Standard ID: JJF 1286-2022 (JJF1286-2022)
Description (Translated English): Calibration Specification for Wireless Channel Emulators
Sector / Industry: Metrology & Measurement Industry Standard
Word Count Estimation: 51,526
Date of Issue: 2022-09-26
Date of Implementation: 2023-03-26
Issuing agency(ies): State Administration for Market Regulation

JJF 1286-2022: Calibration Specification for Wireless Channel Emulators

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calibration Specification for Wireless Channel Emulators National Metrology Technical Specifications of the People's Republic of China Wireless Channel Simulator Calibration Specification Released on 2022-09-26 2023-03-26 Implementation Released by the State Administration for Market Regulation Wireless Channel Simulator Calibration Specification Channel Emulators Replace JJF 1286-2011 Responsible unit. National Radio Metrology Technical Committee Drafting Unit. Tenth Research Institute of China Electronics Technology Group Corporation China Academy of Information and Communications Technology This specification entrusts the National Radio Measurement Technical Committee to be responsible for interpretation The main drafters of this specification. Pan Liu (The Tenth Research Institute of China Electronics Technology Group Corporation) Zhang Jingxi (The Tenth Research Institute of China Electronics Technology Group Corporation) Zhang Peiyan (China Academy of Information and Communications Technology) Participating drafters. Cheng Kai (China Academy of Information and Communications Technology) Sun Jinglu (China Academy of Information and Communications Technology) Ye Xiaoshu (The Tenth Research Institute of China Electronics Technology Group Corporation)

Table of contents

Introduction (Ⅲ) 1 Scope(1) 2 References(1) 3 terms(1) 4 Overview(1) 5 Metrological characteristics(1) 5.1 Local oscillator output frequency (quartz crystal oscillator frequency) (1) 5.2 Frequency range(1) 5.3 Path loss(1) 5.4 Output Attenuation(1) 5.5 Output level(1) 5.6 Maximum Doppler Shift(2) 5.7 Path delay(2) 5.8 Initial delay(2) 5.9 Spectral purity(2) 5.10 Gain Flatness(2) 5.11 VSWR of RF input and output ports(2) 6 Calibration conditions(2) 6.1 Environmental conditions (2) 6.2 Measuring standards and other equipment(2) 7 Calibration Items and Calibration Methods(3) 7.1 Appearance and normal operation inspection (4) 7.2 Local oscillator output frequency (quartz crystal oscillator frequency) (4) 7.3 Frequency range(4) 7.4 Path loss(5) 7.5 Output Attenuation(5) 7.6 Output level(5) 7.7 Maximum Doppler Shift(6) 7.8 Path delay(7) 7.9 Initial delay(9) 7.10 Spectral purity(10) 7.11 Gain Flatness(10) 7.12 VSWR of RF input and output ports (10) 7.13 Function check (11) 8 Expression of Calibration Results(15) 9 Recalibration interval(16) Appendix A Original Record Format (17) Appendix B Calibration Certificate Inner Page Format (23) Appendix C Example of Calibration Uncertainty Assessment of Main Items (29) Appendix D Standard Comparison Delay Measurement Method Based on BPSK Modulation (Path Delay Method 2 Delay Measurement principle) (44)

Introduction

JJF 1071-2010 "Rules for Writing National Metrology Calibration Standards" and JJF 1059.1-2012 "Inaccurate Measurement Quantitative Evaluation and Representation together constitute a basic series of specifications supporting the formulation and revision of calibration specifications. Compared with JJF 1286-2011, except for editorial modifications, the main technical changes of this specification are as follows. ---Change the calibration of "local oscillator output frequency accuracy" to "local oscillator output frequency (quartz crystal oscillator frequency Rate)" calibration (see 4.1, 6.2, A.2, B.2, C.1); --- Modified the calibration method of path loss (see Chapter 6); ---Modify the calibration method of path delay, the delay range is expanded from 0ms~3ms to 0ms~1.3s, the maximum The allowable error is increased from ±10ns to ±1ns (see 4.7); --- Change the name of the metering characteristic "group delay" to "initial delay", and the name of "radio frequency interface characteristics" to "VSWR of radio frequency input and output ports" (see 4.8, 4.11); --- Increased "frequency range", "output level" and "Doppler maximum frequency shift" three measurement characteristics (see 5.2, 5.5, 5.6); --- Deleted "RF Frequency Response Flatness", "Output Power Linearity" and "Analog Baseband Frequency Response Flatness" Degree", "Analog Baseband I/Q Amplitude Balance" and "Analog Baseband I/Q Phase Balance" (see previous version 5.4, 5.9, 5.10, 5.11, 5.12); --- The functional inspection of 1 functional inspection item "frequency shift simulation" has been deleted (see Table 1 of the.2011 edition). Release status of previous versions of this specification. ---JJF 1286-2011. Wireless Channel Simulator Calibration Specification

1 Scope

This specification applies to the calibration of wireless channel simulators with frequencies below 6GHz.

2 References

This specification does not refer to documents.

3 terms

The following terms and definitions apply to this specification. 3.1 Path loss pathloss The signal attenuation introduced by the radio frequency signal from the transmitting end to the receiving end through a certain path. 3.2 path delay pathdelay The radio frequency signal arrives at the receiving end through multiple paths from the transmitting end, and the length of the path introduced by the delay.

4 Overview

The wireless channel simulator is a test system composed of RF front-end module, intermediate frequency signal processing module and internal local oscillator module. It is a test instrument, which has a structure of transmitting and receiving, and the frequency conversion part has a local oscillator. It can deal with Rayleigh fading, Rice fading and frequency It can simulate important wireless channel characteristics such as shifting, and has a wide range of wireless communication systems suitable for aviation, spaceflight, and communications. With channel simulation capability, it is mainly used for R&D, manufacturing and evaluation of wireless communication equipment and products.

5 Metrological characteristics

5.1 Local oscillator output frequency (quartz crystal oscillator frequency) Maximum allowable error. ±1×10-7. 5.2 Frequency range 1MHz~6GHz. 5.3 Path loss Measuring range. 0dB~80dB. Maximum allowable error. ± (0.5~4)dB. 5.4 Output Attenuation Measuring range. 0dB~100dB. Maximum allowable error. ± (0.5~4)dB. 5.5 Output level Measuring range. -4dBm~-120dBm. ......

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