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JJF 1201-2008 English PDF

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Upon your order, we will start to translate JJF 1201-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

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Q: Should I purchase the latest version JJF 1201-2008?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJF 1201-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$649.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1201-2008: Calibration specification for hearing aids measurement instrument
Status: Valid

JJF 1201: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1201-2008	649	Add to Cart	5 days	Calibration specification for hearing aids measurement instrument	Valid
JJF 1201-1990	199	Add to Cart	2 days	Operating Technical Norm of 3.39μm Wavelength primary Standard	Obsolete

Similar standards

GB/T 3222.2 GB/T 3222.1 JJG 188 JJF 1191 JJF 1202 JJF 1200

Basic data

Standard ID: JJF 1201-2008 (JJF1201-2008)
Description (Translated English): Calibration specification for hearing aids measurement instrument
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A59
Word Count Estimation: 28,242
Date of Issue: 2008-04-16
Date of Implementation: 2008-07-16
Quoted Standard: GB/T 3102.5-1993; GB/T 3102.7-1993; GB/T 6657-1986; GB/T 6659-1986; JJG 176-2005; JJG 449-2001; JJF 1001-1998; JJF 1034-2005; JJF 1059 -1999; IEC 60118-7-2005
Regulation (derived from): AQSIQ Announcement No. 45 of 2008
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to the hearing aid tester calibration.

JJF 1201-2008: Calibration specification for hearing aids measurement instrument

---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 hearing aids measurement instrument People's Republic of China National Metrology Technical Specifications Hearing aid tester calibration specification Posted 2008-04-16 2008-07-16 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Hearing aid tester calibration specification This specification by the State Administration of Quality Supervision, Inspection and Quarantine approved on April 16, 2008, and from From July 16, 2008 into effect. Focal point. the National Committee of the acoustic measurement technology Drafting unit. Hubei Provincial Institute of Measurement and Testing This specification by the responsible National Technical Committee acoustic measurement interpretation Drafters of this specification. Yao Qiuping (Hubei Institute of Measurement and Testing) When the root of fire (Hubei Institute of Measurement and Testing) Xu Ying (Hubei Institute of Measurement and Testing) Dan Shuguang (Hubei Institute of Measurement and Testing) Song Yifeng (Hubei Institute of Measurement and Testing)

1 Scope (1) 2. Referenced Documents (1) 3 terminology and units of measurement (1) 4 Overview (1) 5 Metrological characteristics (1) The noise floor of the test chamber in 5.1 (1) 5.2 sound source characteristics (1) 5.3 Sound pressure level measurement accuracy (2) 5.4 Test microphone frequency response (2) Total harmonic distortion 5.5 sound pressure level measurement system (2) 5.6 Linear (2) 5.7 RMS Characteristics (2) 5.8 Rise/Recovery Time (2) Calibration Condition 6 (2) 6.1 environmental conditions (2) 6.2 Standard device and other equipment (2) 7 calibration items and calibration methods (3) 7.1 calibration items (3) 7.2 Calibration method (3) 8 calibration results expression (7) 8.1 Calibration Data Processing (7) 8.2 calibration certificate (7) 8.3 calibration measurement uncertainty (7) 9 Recalibration interval (8) Appendix A calibration certificate (9) Examples Appendix B Evaluation of Measurement Uncertainty (12) Hearing aid tester calibration specification

1 Scope

This instruction applies to a hearing aid tester calibration.

2 Citations

This specification references the following documents GB/T 3102.5-1993 "electricity and magnetism Quantities and units" GB/T 3102.7-1993 "acoustic volume and unit" GB/T 6657-1986 "Measurement of electroacoustical characteristics of hearing aids." GB/T 6659-1986 "with a measurement method of electro-acoustic characteristics of hearing aids AGC circuit" JJG176-2005 "sound calibrators test procedures" JJG449-2001 "octave and 1/3 octave filter test procedures" JJF 1001-1998 "common measurement terms and definitions" JJF 1034-2005 "Acoustic measurement terminology and definitions" JJF 1059-1999 "Evaluation and Expression of Uncertainty in Measurement" IEC 60118-7.2005 "electroacoustic aids - Part 7. When the hearing aid product delivery quality inspection Performance measurement "(Electroacoustics-Hearingaids-Part 7. Measurementoftheperformancecharac- teristicsofhearingaidsforproduction, supplyanddeliveryqualityassurancepurposes) When using this specification it should be noted that using the currently valid version of the documents cited.

3 terminology and units of measurement

This specification uses terminology and definitions relating to the JJF 1001-1998 and JJF 1034-2005. This specification uses GB/T 3102.5-1993 Quantities and units and GB/T 3102.7-1993 prescribed.

4 Overview

Hearing aid tester is a device for measuring the electro-acoustic characteristics of hearing aids, which mainly consists of test cases, the sound source, control is transferred Composition microphone, ear simulator, sound pressure measurement systems, attenuator, distortion measurement systems and power supply and other parts. 5 Metrological characteristics ① 5.1 The noise floor of the test chamber The noise floor of the test chamber should be low enough in the frequency range of 200Hz ~ 8kHz-third octave band, Its background noise should be at least lower than the measured hearing inherent noise 10dB. 5.2 sound source characteristics 5.2.1 Alternative method Reference SPL error. in the frequency range of 200Hz ~ 5kHz, ② generally no more than ± 1.0dB, Note. ① metrological characteristics of the specification's technical indicators are not used to determine eligibility, only to provide a reference. ② The specification of Article 5 of the "General" and represents the performance indicators mentioned for reference purposes only. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1201-2008_English be delivered?

Answer: Upon your order, we will start to translate JJF 1201-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1201-2008_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1201-2008_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version JJF 1201-2008?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJF 1201-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.