IEC reference coupler for the measurement of hearing aids using earphones coupled to the ear by means of ear inserts

SJ/Z 9144-1987 IEC reference coupler for the measurement of hearing aids using earphones coupled to the ear by means of ear inserts
Standard No.:	SJ/Z 9144-1987	Status:	VALID remind me the status change Email:
Target Language:	English	File Format:	PDF
Word Count:		Translation Price:	please email coc@codeofchina.com for quotation remind me the price change Email:
Implemented on:	1988-01-06	Delivery:	via email in 1 business day
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Standard No.:	SJ/Z 9144-1987
Chinese Name:	测量助听器耳塞机用ＩEC参考耦合腔
English Name:	IEC reference coupler for the measurement of hearing aids using earphones coupled to the ear by means of ear inserts
Issued by:
Issued on:	1988-01-06
Implemented on:	1988-01-06
Status:	VALID
Target Language:	English
File Format:	PDF
Word Count:
Translation Price:	please email coc@codeofchina.com for quotation
Delivery:	via email in 1 business day

SJ/Z 9144-1987 The following standards are cited：

SJ/Z 9144-1987 Cited by the following standards：