JJG 173: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJG 173-2004 | English | RFQ |
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3 days [Need to translate]
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Gauge for Measuring Distance Between Inside Rim Faces of Wheels for Railway Locomotive and Vehicle
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JJG 173-2004
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| JJG 173-2003 | English | RFQ |
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5 days [Need to translate]
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Verification regulation of Signal Cenerator
| Obsolete |
JJG 173-2003
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| JJG 173-1986 | English | 959 |
Add to Cart
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6 days [Need to translate]
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Verification Regulation of Standard Signal Generator Type XFC-6A
| Obsolete |
JJG 173-1986
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| JJG 173-1976 | English | RFQ |
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3 days [Need to translate]
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(Chinese Industry Standard)
| Obsolete |
JJG 173-1976
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Standard similar to JJG 173-2004 JJG 249 JJG 404 JJG 134 Basic data | Standard ID | JJG 173-2004 (JJG173-2004) | | Description (Translated English) | Gauge for Measuring Distance Between Inside Rim Faces of Wheels for Railway Locomotive and Vehicle | | Sector / Industry | Metrology & Measurement Industry Standard | JJG 173-2003: Verification regulation of Signal Cenerator---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.
Verification regulation of Signal Cenerator
National Metrology Verification Regulations of the People's Republic
Signal generator
SignalGenerator
Released on.2003-11-24
2004-05-24 implementation
The General Administration of Quality Supervision, Inspection and Quarantine issued
Signal generator verification procedure
Sig
nalGenerator
Replacing JJG 173-1986
JJG 174-1985
JJG 324-1983
JJG 325-1983
JJG 339-1983
JJG 438-1986
This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on November 24,.2003, and
It will take effect on May 24,.2004.
Focal Point. National Radio Metering Technical Committee
Main drafting unit. China Institute of Metrology
Participated in the drafting unit. Communication Measurement Center of the Ministry of Information Industry
This procedure entrusts the National Radiometric Technical Committee to explain
The main drafters of this procedure.
He Zhao (China Institute of Metrology)
Participate in the drafters.
Huang Jianming (China Institute of Metrology)
Han Guifen (Communication Measurement Center of Ministry of Information Industry)
table of Contents
1 Scope (1)
2 Overview (1)
3 Metrological performance requirements (1)
3.1 Internal Crystal Oscillator (1)
3.2 Frequency (1)
3.3 Level (1)
3.4 Spectrum purity parameters (1)
3.5 Modulation parameters (1)
3.6 Pulse Modulation Parameters (2)
3.7 Internal Modulation Generator Parameters (2)
4 General technical requirements (2)
5 measuring instrument control (2)
5.1 Verification conditions (2)
5.2 Verification items and verification methods (4)
5.3 Processing of verification results (11)
5.4 Verification cycle (11)
Appendix A Verification Record Form (12)
Appendix B Certification Certificate Page Format (18)
Signal generator verification procedure
1 Scope
This procedure is applicable to the first verification and subsequent inspection of various general-purpose signal generators with a frequency range of 5 kHz to 40 GHz.
The determination and the in-use test can be carried out according to the actual measurement performance of the signal generator to be tested.
2 Overview
The signal generator is a comprehensive consisting of an oscillator, a frequency synthesizing unit, a level control unit, a modulation unit, and the like.
The basic function of electronic instruments is to provide sine wave signals and modulated wave signals, which are widely used in production, scientific research and measurement.
And other departments.
3 Metrological performance requirements
3.1 Internal Crystal Oscillator
Boot characteristics. 1 × 10-6 ~ 1 × 10-11
Daily frequency fluctuation. 1×10-6~1×10-11
Daily aging rate. ±1×10-6~±1×10-11
1 second frequency stability. 1×10-6~1×10-11
Frequency reproducibility. ±1×10-6~±1×10-11
Frequency accuracy. ±1×10-5~±1×10-10
3.2 Frequency
Frequency range. 5kHz~40GHz
Frequency accuracy. ±1×10-5~±1×10-10
3.3 level
Level range. -127dBm~ 30dBm
Level accuracy. ± (0.5dB~2dB)
3.4 Spectrum purity parameters
3.4.1 Residual amplitude modulation and residual frequency modulation of carrier
3.4.2 Harmonics
3.4.3 Non-harmonics
3.4.4 Subharmonics
3.4.5 SSB phase noise
3.5 Modulation parameters
3.5.1 Amplitude Modulation
Amplitude modulation depth range. 5%~99%
Amplitude depth accuracy. ±3%~±20%
3.5.2 Frequency Modulation
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